Security image contraband missed detection tracking method and device for security check scene

Abstract

The application discloses a security check image contraband missed detection tracing method and device for a security check scene, relates to the technical field of intelligent security check or other related technical fields, and comprises the following steps: when a passenger enters a security check channel, binding the passenger identity information and flight information collected to a security check basket put by the passenger; when detecting that the security check basket enters the range of a security check machine, collecting a luggage security check image, recording an image collection time stamp and a corresponding security check basket label code; according to the security check basket label code and the image collection time stamp, establishing an associated record chain of the luggage security check image, passenger identity and flight information; when detecting that the luggage security check image has contraband missed detection, querying missed passenger identity information and flight information through the associated record chain, and combining an indoor positioning system of an airport to carry out interception. The application solves the technical problems of long time consumption and low interception success rate of the airport security check mode in tracing missed contraband in the related art.

Description

Technical Field

[0001] This invention relates to the field of intelligent security inspection technology or other related fields. Specifically, it relates to a method and device for tracing and tracking contraband items missed in security inspection images for security inspection scenarios. Background Technology

[0002] With the booming development of the global civil aviation industry and the increasing passenger throughput year by year, airport security checks, as the first line of defense for aviation safety, are becoming increasingly important. Currently, airport security checks mainly rely on a combination of manual interpretation and machine assistance. In baggage security checks, X-ray imaging technology has become the mainstream detection method due to its non-destructive nature, high efficiency, and good ability to distinguish between organic and inorganic substances.

[0003] In related technologies, with the advancement of deep learning algorithms, automatic detection technology for X-ray images based on computer vision is gradually being applied in real-world scenarios to improve the detection efficiency of prohibited items (such as knives, flammable and explosive liquids, etc.). However, the automatic detection methods in these technologies are time-consuming to trace, often requiring collaboration among multiple departments. The search is often a needle-in-a-haystack process, involving manual review of surveillance footage and verification of security check lists, which typically takes tens of minutes or even longer. Furthermore, due to the excessively long tracing time, by the time staff finally locate a suspected passenger, the passenger has often already boarded the plane or moved away from the security check area, resulting in a missed opportunity for interception and posing a significant threat to aviation safety.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This invention provides a method and apparatus for tracing and tracking contraband missed in security inspection images, which at least solves the technical problems of long time consumption and low interception success rate in airport security inspection methods when tracing and tracking missed contraband.

[0006] According to one aspect of the present invention, a method for tracing undetected prohibited items in security inspection images is provided for security inspection scenarios. The method includes: when a passenger enters the security checkpoint, binding the collected passenger identity information and flight information with the security basket placed by the passenger; when the security basket is detected to be within the range of the security inspection machine, collecting a baggage security inspection image and recording the image collection timestamp and the corresponding security basket label code; establishing an association record chain between the baggage security inspection image, passenger identity, and flight information based on the security basket label code and the image collection timestamp; and when undetected prohibited items are found in the baggage security inspection image, querying the undetected passenger identity information and flight information through the association record chain, and locating the passenger's current location using the airport indoor positioning system to guide security personnel to intercept the prohibited items.

[0007] Optionally, the step of binding the collected passenger identity information and flight information with the security bin placed by the passenger when the passenger enters the security checkpoint includes: capturing a visible light image of the passenger's face using a facial recognition camera when the passenger enters the security checkpoint, and reading the passenger's boarding pass graphic code using a boarding pass scanning device; extracting features from the visible light image to obtain facial feature information; decoding the boarding pass graphic code to parse out passenger identity information including the passenger's name and flight information including the flight number and seat number; receiving the security bin tag code read by an RFID reader after detecting that the passenger has placed their luggage in the security bin; and binding the facial feature information, passenger identity information, and flight information with the security bin tag code and the X-ray image acquisition time to obtain a temporary association record.

[0008] Optionally, when the security basket is detected to have entered the range of the security inspection machine, the step of acquiring a baggage security inspection image and recording the image acquisition timestamp and the corresponding security basket label code includes: when the security basket is detected to have entered the range of the security inspection machine, acquiring a single-view or dual-view image containing the security basket through the security inspection machine to obtain a baggage security inspection image, and recording the image acquisition timestamp and the corresponding security basket label code, wherein the security inspection machine includes an X-ray machine, and the type of the baggage security inspection image includes an X-ray image.

[0009] Optionally, the step of establishing a linking record chain between the baggage security inspection image, passenger identity, and flight information based on the security basket label code and the image acquisition timestamp includes: extracting the security basket label code from the temporary linking record and querying the X-ray image acquisition time corresponding to the security basket label code; determining whether the time difference between the image acquisition timestamp and the X-ray image acquisition time is less than a preset time window threshold; if the time difference is less than the preset time window threshold, confirming that the baggage security inspection image and the passenger identity information and facial feature information in the temporary linking record belong to the same passenger, and establishing a linking record chain between the baggage security inspection image, passenger identity, and flight information based on the security basket label code and the image acquisition timestamp.

[0010] Optionally, if prohibited items are detected to have been missed in the baggage security scan image, the steps of querying the identity information and flight information of the missed passenger through the associated record chain, and locating the passenger's current location using the airport indoor positioning system to guide security personnel to intercept the passenger include: receiving a missed detection warning signal and the corresponding baggage security scan image; using the identifier of the baggage security scan image to perform a reverse retrieval in the associated record chain to extract the passenger's identity information and flight information corresponding to the baggage security scan image; based on the extracted passenger identity information, querying the passenger's current real-time geographic coordinates through the airport indoor positioning system to obtain the current location of the missed passenger; and pushing the current location of the missed passenger to the security terminal to guide security personnel to intercept the passenger.

[0011] Optionally, the step of pushing the current location of the missed passenger to the security checkpoint to guide security personnel to intercept the passenger includes: packaging the current location, passenger identity information, and flight information of the missed passenger into a tracing instruction; sending the tracing instruction to the security checkpoint responsible for the area where the current location is located via a wireless communication network; and displaying the real-time location map and passenger identity information of the missed passenger on the security checkpoint to guide security personnel to the designated location for interception.

[0012] According to another aspect of the present invention, a method for tracing and tracking contraband missed in security inspection images is also provided for security inspection scenarios. The method includes: deploying a facial recognition camera and a boarding pass scanning device at the entrance of the security checkpoint; embedding RFID tags in the security basket to obtain a security basket tag code; when a passenger enters the security checkpoint, capturing a facial image and extracting facial feature information, while simultaneously scanning the boarding pass to obtain passenger identity information and flight information; after the passenger places their luggage in the security basket, reading the security basket tag code using an RFID reader; upon detecting the security basket entering an X-ray machine, the X-ray machine captures a dual-view X-ray image to obtain a luggage security inspection image, recording the image acquisition timestamp and the corresponding security basket tag code; establishing an association record chain between the luggage security inspection image, passenger identity, and flight information based on the security basket tag code and the image acquisition timestamp; and, if a contraband is detected missed in the luggage security inspection image, querying the passenger's identity information and flight information through the association record chain, and locating the passenger's current location using the airport indoor positioning system to guide security personnel to intercept the contraband.

[0013] According to another aspect of the present invention, a security inspection image contraband tracing device for security inspection scenarios is also provided, comprising: a security basket binding unit, used to bind the collected passenger identity information and flight information with the security basket placed by the passenger when the passenger enters the security inspection channel; a security image acquisition unit, used to acquire baggage security inspection images when the security basket is detected to have entered the range of the security inspection machine, and record the image acquisition timestamp and the corresponding security basket label code; an association record chain establishment unit, used to establish an association record chain of the baggage security inspection image, passenger identity and flight information according to the security basket label code and the image acquisition timestamp; and a contraband tracing unit, used to query the identity information and flight information of the contraband passenger through the association record chain when the baggage security inspection image is detected to have contraband evaded inspection, and to locate the passenger's current location in conjunction with the airport indoor positioning system, so as to guide security personnel to intercept the contraband.

[0014] Optionally, the security basket binding unit includes: a facial image acquisition module, used to acquire a visible light image of the passenger's face through a facial recognition camera when the passenger enters the security checkpoint, and read the passenger's boarding pass graphic code through a boarding pass scanning device; a feature extraction module, used to extract features from the visible light image to obtain facial feature information; a decoding module, used to decode the boarding pass graphic code to parse out passenger identity information including the passenger's name and flight information including the flight number and seat number; a security basket label encoding receiving module, used to receive the security basket label code read by an RFID reader after detecting that a passenger has placed luggage in the security basket; and a temporary association record determination module, used to bind the facial feature information, the passenger identity information, and the flight information with the security basket label code and the X-ray image acquisition time to obtain a temporary association record.

[0015] Optionally, the security inspection image acquisition unit includes: a baggage image acquisition module, used to acquire a single-view or dual-view image containing the security basket through the security inspection machine when the security basket is detected to enter the range of the security inspection machine, to obtain a baggage security inspection image, and record the image acquisition timestamp and the corresponding security basket label code, wherein the security inspection machine includes: an X-ray machine, and the type of baggage security inspection image includes: an X-ray image.

[0016] Optionally, the associated record chain establishment unit includes: a security basket label code extraction module, used to extract the security basket label code from the temporary associated record and query the X-ray image acquisition time corresponding to the security basket label code; a time difference judgment module, used to determine whether the time difference between the image acquisition timestamp and the X-ray image acquisition time is less than a preset time window threshold; and an associated record chain establishment module, used to confirm that the baggage security image and the passenger identity information and facial feature information in the temporary associated record belong to the same passenger if the time difference is less than the preset time window threshold, and to establish an associated record chain of the baggage security image, passenger identity and flight information based on the security basket label code and the image acquisition timestamp.

[0017] Optionally, the missed detection tracing unit includes: a missed detection early warning signal receiving module, used to receive a missed detection early warning signal and the corresponding baggage security inspection image; a reverse retrieval module, used to use the identifier of the baggage security inspection image to perform a reverse retrieval in the associated record chain to extract the passenger identity information and flight information corresponding to the baggage security inspection image; a missed passenger positioning module, used to query the passenger's current real-time geographic coordinates through the airport indoor positioning system based on the extracted passenger identity information to obtain the current location of the missed passenger; and a guidance and interception module, used to push the current location of the missed passenger to the security inspection terminal to guide security personnel to intercept the passenger.

[0018] Optionally, the guidance and interception module includes: an information packaging submodule, used to package the current location, passenger identity information, and flight information of the missed passenger into a tracing instruction; and a guidance and interception submodule, used to send the tracing instruction to the security terminal responsible for the area where the current location is located via a wireless communication network, and display the real-time location map guidance and passenger identity information of the missed passenger on the security terminal to guide security personnel to the designated location for interception.

[0019] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored computer program, wherein, when the computer program is executed, it controls the device where the computer-readable storage medium is located to execute any of the above-described methods for tracing and tracking undetected contraband in security inspection images for security inspection scenarios.

[0020] According to another aspect of the present invention, an electronic device is also provided, including one or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement any of the above-described methods for tracing and tracking contraband items missed in security inspection scenarios.

[0021] According to another aspect of the present invention, a computer program product is also provided, including a computer program that, when executed by a processor, implements the steps of the security inspection image contraband tracing method for security inspection scenarios described above.

[0022] In this disclosure, when passengers enter the security checkpoint, the collected passenger identity information and flight information are linked to the security bins placed by the passengers. When the security bins are detected to be within the range of the security machine, baggage security images are captured, and the image capture timestamp and the corresponding security bin label code are recorded. Based on the security bin label code and the image capture timestamp, a linking record chain is established between the baggage security images, passenger identity, and flight information. If prohibited items are detected to have been missed in the baggage security images, the identity information and flight information of the missed passengers are retrieved through the linking record chain, and the passenger's current location is located using the airport's indoor positioning system to guide security personnel to intercept the items.

[0023] This disclosure establishes a link between baggage security inspection images, passenger identity, and flight information. By querying the identity and flight information of passengers who missed inspection through this link, and combining it with the airport's indoor positioning system to locate the passenger's current position, security personnel can be guided to intercept the item. This reduces the time for finding passengers who missed inspection from tens of minutes to less than 5 minutes, significantly reducing the time for tracing passengers to whom the contraband was missed, and significantly improving the efficiency of tracing and intercepting missed items. This solves the technical problems of long time consumption and low interception success rate in airport security inspection methods that missed the inspection of contraband in related technologies. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0025] Figure 1 This is a flowchart of an optional method for tracing missed detection of contraband in security inspection images according to an embodiment of the present invention.

[0026] Figure 2 This is another method for tracing and tracking contraband items missed in security inspection images for security inspection scenarios, according to an embodiment of the present invention;

[0027] Figure 3 This is a flowchart of an optional method for binding associated information and tracing missed detections in airport security scenarios according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of an optional security inspection image contraband tracing device for security inspection scenarios according to an embodiment of the present invention;

[0029] Figure 5 This is a hardware structure block diagram of an electronic device (or mobile device) that performs a method for tracing missed detection of contraband in security inspection images for security inspection scenarios, according to an embodiment of the present invention. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0032] To facilitate understanding of the present invention by those skilled in the art, some terms or nouns involved in the various embodiments of the present invention are explained below:

[0033] Radio Frequency Identification (RFID) automatically identifies specific targets and reads and writes relevant data through radio signals. In this invention, it is used to uniquely identify security screening baskets and bind passenger identities.

[0034] The Airport Collaborative Decision Making (ACDM) system is used for real-time sharing and collaboration of airport operation data. In this invention, it is used to obtain passenger flight status and boarding gate information.

[0035] Missed Detection Traceability (MDT) is a technique used in this invention to quickly locate the location of passengers after a security check miss occurs by associating data. It enables rapid reverse lookup from images to individuals.

[0036] An indoor positioning system (IPS) uses technologies such as Bluetooth, UWB, or video tracking to obtain the real-time location of people in an enclosed space. In this invention, it is used to guide security personnel to pinpoint the passenger's current location after a missed inspection is detected.

[0037] A Security Check Basket (SCB) is a container used to hold passengers' carry-on luggage and pass it through a security X-ray machine. In this invention, it serves as a key physical carrier connecting passenger identity with X-ray images.

[0038] An X-ray image, or XRI for short, is an image formed by X-rays penetrating luggage. In this invention, it is used to show the internal structure of luggage for the detection of contraband.

[0039] Boarding Pass Recognition (BPR) is a technology that reads boarding pass information by scanning QR codes or barcodes. In this invention, it is used to obtain key travel information such as the passenger's name, flight number, and seat number.

[0040] Flight Information (FI) includes data such as flight number, scheduled departure time, boarding time, and gate. In this invention, it is used to determine the passenger's flight and final destination to assist in interception decisions.

[0041] The Data Association Chain (DAC) is a logical structure that links X-ray image identifiers, security basket codes, facial features, passenger IDs, and flight information. In this invention, it is used to achieve complete information traceability.

[0042] Image Acquisition Timestamp (IAT) is a time stamp that records the specific moment when an X-ray image is generated. In this invention, it is used to perform window matching with the time when a passenger enters the security checkpoint to confirm the correlation.

[0043] It should be noted that the method and apparatus for tracing and tracking prohibited items in security images for security inspection scenarios disclosed herein can be used in the field of intelligent security inspection technology to achieve the tracing and tracking of prohibited items in security images for airport security inspection scenarios. It can also be used in any field other than intelligent security inspection technology to achieve the tracing and tracking of prohibited items in security images for airport security inspection scenarios. This disclosure does not limit the application field of the method and apparatus for tracing and tracking prohibited items in security images for security inspection scenarios.

[0044] It should be noted that the information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, and displayed data) collected in this public disclosure are information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, storage, use, processing, transmission, provision, disclosure, and application of related data all comply with the relevant laws, regulations, and standards of the relevant regions, necessary confidentiality measures have been taken, and they do not violate public order and good morals. Corresponding operation entry points are provided for users to choose to authorize or refuse. For example, this system has interfaces with relevant users or organizations. Before obtaining relevant information, a request to obtain the information needs to be sent to the aforementioned user or organization through the interface, and the relevant information is obtained only after receiving consent from the aforementioned user or organization.

[0045] It should be noted that in this disclosure, customer information is collected and analyzed, and users are provided with corresponding operation entry points to choose whether to agree to or reject the automated decision results; if the user chooses to reject, the process will proceed to the expert decision-making process.

[0046] The following embodiments of the present invention can be applied to various systems / applications / devices for tracing and tracking contraband missed in security inspection images in various security inspection scenarios. The present invention is applicable to intelligent security inspection scenarios, such as security checkpoints in public places like airports and subways. For example, in airport security inspection scenarios, it specifically includes X-ray image detection of passenger baggage, rapid tracing and interception of passengers who have missed security inspections, and security inspection process management based on multi-source data fusion; in subway security inspection scenarios, it specifically includes storage of passenger baggage security inspection images, post-incident investigation of missed contraband, and correlation tracking of passenger identity and baggage upon entry.

[0047] This invention achieves the association and precise positioning of "package-image-person-flight" through multi-source data fusion and time axis alignment technology, reducing the time to find passengers after missed detection from tens of minutes to less than 5 minutes, significantly improving the efficiency of missed detection tracing and interception.

[0048] This invention can solve the problem of broken data links between people, bags, and images in existing security inspection systems, realize closed-loop management and rapid response of security inspection data, and, by combining with an indoor positioning system, can guide security personnel to locate passengers who have left the security inspection area in real time, thereby improving the integrity of closed-loop security inspection management.

[0049] The present invention will now be described in detail with reference to various embodiments.

[0050] Example 1

[0051] According to an embodiment of the present invention, an embodiment of a method for tracing and tracking contraband items missed in security inspection images for security inspection scenarios is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0052] Figure 1 This is a flowchart of an optional method for tracing missed detection of contraband in security inspection images according to an embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps S101 to S104. The present invention will be described in detail below with reference to each implementation step.

[0053] Step S101: When a passenger enters the security checkpoint, the collected passenger identity information and flight information are linked to the security check basket placed by the passenger.

[0054] This embodiment can construct an initial logical connection between the passenger entity and the physical logistics carrier by combining multimodal biometric recognition and non-contact radio frequency identification technology, establish a unique identifier for the starting point of the security check process, and enable the security check image data to be traced back to the specific passenger entity and flight entity.

[0055] Optionally, the step of binding the collected passenger identity information and flight information with the security bin placed by the passenger when the passenger enters the security checkpoint includes: capturing a visible light image of the passenger's face using a facial recognition camera when the passenger enters the security checkpoint, and reading the passenger's boarding pass graphic code using a boarding pass scanning device; extracting features from the visible light image to obtain facial feature information; decoding the boarding pass graphic code to parse out passenger identity information including the passenger's name and flight information including the flight number and seat number; receiving the security bin tag code read by an RFID reader after detecting that the passenger has placed their luggage in the security bin; and binding the facial feature information, passenger identity information, and flight information with the security bin tag code and the time of X-ray image acquisition to obtain a temporary association record.

[0056] In this embodiment, a high-definition camera can be used to capture high-resolution facial images and extract stable biometric vectors. The boarding pass scanning device uses an optical sensor to recognize graphic codes (including QR codes or barcodes), which helps obtain structured travel data. Parallel acquisition of both methods improves the real-time performance and completeness of data collection. Furthermore, this embodiment employs a deep learning algorithm to encode facial features in the facial images, generating low-dimensional vector representations of facial feature information for rapid retrieval in subsequent comparisons. Simultaneously, optical character recognition (OCR) technology or a dedicated decoding protocol is used to parse the text data in the graphic codes, transforming unstructured images into standardized passenger identification IDs and flight status fields, providing a unified data format for multi-source data fusion.

[0057] In addition, in this embodiment, the security basket has an active or passive RFID tag built in. When luggage falls into the basket or the basket moves to the reader's sensing area, the radio frequency signal triggers the tag to respond. The reader obtains a unique tag code, digitizing the physical logistics unit (security basket) and giving it traceable network attributes, thus becoming a physical link connecting passenger information and security image data. Finally, facial feature information, passenger identity information, and flight information are bound to the security basket tag code and the X-ray image acquisition time to obtain a temporary association record. For example, in this embodiment, a structured record containing a timestamp (which can be defined as T_entry), facial features (which can be defined as F_face), identity ID, flight information (which can be defined as F_flight), and security basket code (which can be defined as R_basket) is constructed in the memory database. This temporary association record serves as the reference anchor point for subsequent X-ray image association, enabling the corresponding security image to be quickly locked through a time window matching algorithm when the passenger is about to pass through the security machine, realizing the pre-establishment of the "person-bag" relationship.

[0058] Step S102: When the security basket is detected to have entered the security inspection machine's range, a baggage security inspection image is captured, and the image capture timestamp and the corresponding security basket label code are recorded.

[0059] This embodiment can monitor the physical location of the security basket in real time through photoelectric sensors or RFID antenna arrays. When the security basket enters the security area of ​​the security machine, the imaging mechanism is triggered to establish a spatiotemporal correspondence between the physical baggage carrier and the imaging data. Using the security basket as a unique index, the invisible security scan data is logically connected with the visible passenger identity information.

[0060] Optionally, when the security basket is detected to have entered the range of the security inspection machine, the steps of acquiring baggage security inspection images and recording the image acquisition timestamp and the corresponding security basket label code include: when the security basket is detected to have entered the range of the security inspection machine, acquiring a single-view or dual-view image containing the security basket through the security inspection machine to obtain a baggage security inspection image, and recording the image acquisition timestamp and the corresponding security basket label code, wherein the security inspection machine includes: an X-ray machine, and the type of baggage security inspection image includes: an X-ray image.

[0061] In this embodiment, the security inspection machine can synchronously emit scanning signals (e.g., X-rays) based on the position signal of the security basket and receive the signals after penetration to generate grayscale or pseudo-color images reflecting the density and atomic number of the material inside the luggage. Acquiring single-view images helps reduce data volume and improve processing speed, while acquiring dual-view images helps reconstruct or enhance image details through projection data from different angles, which helps to more accurately identify obscured or overlapping contraband and improve the accuracy of image interpretation. The image acquisition timestamp and the corresponding security basket tag code are recorded. For example, a high-precision timestamp (which can be defined as T_xray) is generated by the X-ray machine's control system and written together with the security basket tag code read by the RFID reader (which can be defined as R_basket) into the log or associated database. This timestamp serves as a key node for timeline alignment and helps to calculate the difference with the timetamp of the passenger entering the security checkpoint (which can be defined as T_entry) in subsequent steps, thereby verifying the effectiveness of the "security basket-passenger" association and ensuring the consistency of image data and passenger behavior in the time series.

[0062] Step S103: Based on the security basket label code and image acquisition timestamp, establish a linking record chain between baggage security images, passenger identity, and flight information.

[0063] This embodiment verifies the consistency of the physical carrier's flow through the time dimension, and logically connects the discretely collected facial features, identity data, flight information, and security check image data to construct a complete closed-loop data structure, enabling any single-dimensional query (such as based solely on an image or solely on identity) to quickly retrieve other related dimensions.

[0064] Optionally, the step of establishing a linking record chain between baggage security inspection images, passenger identity, and flight information based on the security basket label code and image acquisition timestamp includes: extracting the security basket label code from the temporary linking record and querying the X-ray image acquisition time corresponding to the security basket label code; determining whether the time difference between the image acquisition timestamp and the X-ray image acquisition time is less than a preset time window threshold; if the time difference is less than the preset time window threshold, confirming that the baggage security inspection image and the passenger identity information and facial feature information in the temporary linking record belong to the same passenger, and establishing a linking record chain between baggage security inspection images, passenger identity, and flight information based on the security basket label code and image acquisition timestamp.

[0065] In this embodiment, the security basket label can be encoded as a unique index key to retrieve the entry timestamp (which can be defined as T_entry) of the basket at the security entrance in the temporary association record database. This helps to achieve rapid data location, avoid full table scans, improve the real-time performance of association establishment, and provide accurate benchmark data for subsequent time difference calculations.

[0066] The system determines whether the time difference between the image acquisition timestamp and the X-ray image acquisition time is less than a preset time window threshold. This embodiment calculates the absolute difference between the X-ray image acquisition timestamp (T_xray) and the passenger entry timestamp (which can be defined as T_entry) and compares it with a preset time threshold. This threshold is set based on the conveyor belt speed and passenger queue density at the security checkpoint, thereby filtering out erroneous associations caused by passenger queue jumping, baggage retrieval, or system delays, improving the logical rationality of data association. If the time difference is less than the preset time window threshold, it confirms that the baggage security image and the passenger identity and facial feature information in the temporary association record belong to the same passenger. After determining that the time consistency is established, the security image identifier (which can be defined as I_xray_id), security basket label code, facial features, passenger identity ID, and flight information are integrated into a permanent association record chain, solidifying the "person-bag-image-flight" correspondence. This allows for direct retrieval of the complete passenger itinerary and real-time location information via the image ID or identity ID during subsequent missed detection tracing, shortening the query path.

[0067] Step S104: If prohibited items are detected to have been missed in the baggage security inspection image, the identity information and flight information of the missed passenger are queried through the associated record chain, and the current location of the passenger is located in combination with the airport indoor positioning system to guide security personnel to intercept the item.

[0068] This embodiment initiates a reverse tracing process after the missed detection is determined. It utilizes the established chain of related records to achieve rapid mapping from objects to people, breaking the limitations of traditional manual backtracking. Through the integration of automatic data association and spatial positioning technology, the tracing process is transformed into visual navigation instructions, which helps to shorten response time and improve the efficiency of handling potential security threats.

[0069] Optionally, when prohibited items are detected to have been missed in baggage security screening images, the steps include: querying the identity and flight information of the missed passenger through the associated record chain, and locating the passenger's current position using the airport's indoor positioning system to guide security personnel to intercept the passenger; receiving a missed detection warning signal and the corresponding baggage security screening image; using the identifier of the baggage security screening image to perform a reverse retrieval in the associated record chain to extract the passenger's identity and flight information corresponding to the baggage security screening image; querying the passenger's current real-time geographic coordinates through the airport's indoor positioning system based on the extracted passenger identity information to obtain the current position of the missed passenger; and pushing the current position of the missed passenger to the security terminal to guide security personnel to intercept the passenger.

[0070] In this embodiment, the missed detection warning signal can originate from the confirmation operation of the manual image judgment end or the secondary verification result of the backend deep learning model. The signal carries a unique baggage security inspection image identifier (which can be defined as I_xray_id), which helps to trigger an automated tracing procedure, transforming the anomaly into a data event that the system can process. Then, using the baggage security inspection image identifier as the query key, a reverse index lookup is performed in the database to quickly obtain the passenger's identity ID, facial features, and flight dynamic information bound to the image. By utilizing the pre-established association record chain, cumbersome jumps between multiple systems are avoided, which helps to quickly reconstruct the passenger's complete travel background, including their flight, scheduled departure time, and boarding gate location.

[0071] Then, based on the extracted passenger identity information, the airport indoor positioning system is used to query the passenger's current real-time geographic coordinates to obtain the current location of the missed passenger. In this embodiment, the airport indoor positioning infrastructure (such as UWB base stations, Bluetooth beacons, or video analysis algorithms) can be called to match the passenger's terminal device tag or visual features according to the passenger's identity ID, and calculate the passenger's real-time latitude and longitude or relative coordinates in the terminal building. This overcomes the problem of a wide area and complex personnel flow after security check, and transforms abstract identity information into specific spatial location data, providing geographical guidance for on-site interception.

[0072] Optionally, the step of pushing the current location of the missed passenger to the security checkpoint to guide security personnel to intercept the passenger includes: packaging the current location, passenger identity information, and flight information of the missed passenger into a tracing instruction; sending the tracing instruction to the security checkpoint responsible for the area where the current location is located via a wireless communication network; and displaying the real-time location map and passenger identity information of the missed passenger on the security checkpoint to guide security personnel to the designated location for interception.

[0073] This embodiment constructs a structured data message, integrating spatial coordinates, biometrics, identity information, and travel data into a unified traceability instruction package. This enables synchronous transmission of multimodal data, avoids information fragmentation, and allows the receiving end to acquire complete intelligence elements at once. The traceability instruction is then sent to the security checkpoint responsible for the area where the current location is located via a wireless communication network. Specifically, the passenger's current geographical coordinates can be matched to their assigned grid management area or duty sector. Through wireless communication protocols such as Wi-Fi or private networks, the traceability instruction is precisely routed to a specific security checkpoint device within that area. This facilitates automated task distribution, reduces manual intervention, and ensures that the instruction reaches the execution unit closest to the target area in real time, shortening the instruction transmission delay.

[0074] The security checkpoint displays a real-time location map and passenger identification information for passengers who have missed security checks, guiding security personnel to designated locations for interception. In this embodiment, a real-time map layer is overlaid on the graphical user interface of the security checkpoint, and the real-time location of passengers is marked by icons or highlights. Key identification information such as passenger name, flight number, and type of prohibited items are displayed simultaneously. This helps to provide intuitive visual navigation guidance and background intelligence support for the security checkpoint, enabling it to clearly identify the interception target and its location relationship, thereby quickly planning the action route and executing the interception task.

[0075] Through the above steps, passenger identity and flight information collected when passengers enter the security checkpoint can be linked to the security bins they place. When a security bin is detected entering the security machine's range, baggage security images are captured, and the image capture timestamp and corresponding security bin label code are recorded. Based on the security bin label code and image capture timestamp, a linking record chain is established between baggage security images, passenger identity, and flight information. If prohibited items are detected in the baggage security images, the identity and flight information of the missed passengers can be retrieved through the linking record chain, and the passenger's current location can be determined using the airport's indoor positioning system to guide security personnel to intercept the items. In this embodiment, a chain of records linking baggage security inspection images, passenger identity, and flight information can be established. By querying the identity information and flight information of passengers who have missed inspection through the chain of records, and combining the airport's indoor positioning system to locate the passenger's current location, security personnel can be guided to intercept the passenger. This reduces the time to find the passenger after a missed inspection from tens of minutes to less than 5 minutes, significantly reducing the time to trace the passenger to whom the contraband was missed, and significantly improving the efficiency of tracing and intercepting missed items. This solves the technical problems of long time consumption and low interception success rate in airport security inspection methods that have missed inspections in related technologies.

[0076] Figure 2 This is another method for tracing missed detection of prohibited items in security inspection images according to embodiments of the present invention, such as... Figure 2 As shown, this method for tracing and tracking contraband items missed in security inspection images for security inspection scenarios includes:

[0077] Step S201: Deploy facial recognition cameras and boarding pass scanning equipment at the entrance of the security checkpoint, embed RFID tags in the security check basket, and obtain the security check basket tag code.

[0078] Step S202: When a passenger enters the security checkpoint, a facial image is captured and facial feature information is extracted. At the same time, the boarding pass is scanned to obtain the passenger's identity information and flight information.

[0079] Step S203: After the passenger places their luggage into the security basket, the security basket label code is read by the radio frequency reader. When the security basket is detected to enter the X-ray machine, the X-ray machine acquires a dual-view X-ray image to obtain a luggage security image. The image acquisition timestamp and the corresponding security basket label code are recorded.

[0080] Step S204: Based on the security basket label code and image acquisition timestamp, establish a linking record chain between baggage security images, passenger identity, and flight information.

[0081] Step S205: If prohibited items are detected to have been missed in the baggage security inspection image, the identity information and flight information of the missed passenger are queried through the associated record chain, and the current location of the passenger is located in combination with the airport indoor positioning system to guide security personnel to intercept the item.

[0082] By using RFID tags to encode physical security bins as unique indexes, and combining this with a time window matching algorithm, the system strongly correlates the facial features, identity information, and flight information of passengers entering the security checkpoint with the timestamps of X-ray image acquisition. This breaks down the silos of existing systems where X-ray images, visible light images, and identity information are stored in different databases, and constructs a complete closed-loop correlation record chain. This allows for rapid reverse retrieval of the corresponding passenger entity without manual intervention when a missed check is detected, solving the technical challenge of broken data links between people, bags, and images.

[0083] The following describes in detail another optional implementation method.

[0084] This invention provides a method for tracing contraband missed by X-ray images in airport security scenarios. Addressing the difficulty of tracing passengers after a contraband is missed during security checks, this method proposes a tracing approach that integrates multi-source data such as facial recognition, boarding pass recognition, and RFID recognition with timeline alignment to achieve instant alignment of "bag-image-person-flight" and personnel location-based tracing and interception. This improves the tracing efficiency for missed contraband during security checks and can be applied to security scenarios such as airports and subways.

[0085] In this embodiment of the invention, Figure 3 This is a flowchart of an optional method for binding and tracing missed detections in airport security scenarios according to an embodiment of the present invention, such as... Figure 3 As shown, it includes:

[0086] Step 1: Multi-source identity recognition and data collection.

[0087] Specifically, passenger identity information can be collected through the following methods when passengers enter the security checkpoint: Facial recognition: High-definition cameras at the entrance of the security checkpoint capture passenger facial images and compare them with the airport passenger database or public security identity information system to obtain passenger identity information. Boarding pass recognition: Passenger boarding pass information is read through QR code / barcode scanning devices to obtain passenger name, flight number, seat number, and other information. RFID identification: Passengers pick up security bins with built-in RFID tags at the security bin disposal area. The system reads the unique identification code of the tag through an RFID reader and binds it to the passenger's identity information.

[0088] Step 2: Bind the face, security basket, and security check time to complete the person-bag association.

[0089] Timeline alignment can be achieved using the information shown in Table 1 below.

[0090] Table 1 Timeline Alignment

[0091]

[0092] The specific alignment process may include:

[0093] Step S301: Passengers enter the security checkpoint, and the facial recognition camera captures images of their faces and extracts facial feature information F_face.

[0094] Step 302: Passengers place their luggage into the security basket, and the RFID reader reads the security basket tag code R_basket.

[0095] Step 303: The system establishes a temporary association record (F_face, R_basket, T_entry), where T_entry is the current timestamp.

[0096] Step 304: The security basket enters the X-ray machine. At that moment, the X-ray machine acquires an X-ray image T_xray associated with a unique identifier I_xray_id. The system records (I_xray_id, R_basket, T_xray).

[0097] Step 305: The system associates T_xray and T_entry through R_basket. If |T_xray-T_entry|<ΔT (ΔT is a preset time window threshold, such as 15 seconds), then I_xray is identified as associated with the passenger.

[0098] Step 306: The system queries the flight dynamic data interface (ACDM or airport production and operation system) through the passenger's identity ID to obtain the passenger's flight number F_flight, scheduled departure time, boarding time, gate and other flight information.

[0099] Step 307: Form a complete chain of related records: [X-ray image identifier I_xray_id, security basket label code R_basket, facial feature F_face, passenger ID, flight information F_flight].

[0100] Step 3: Associate the luggage (bag) with X-ray images (images).

[0101] First, the security inspection basket generates an X-ray image with a unique ID when it passes through the machine.

[0102] Secondly, time window threshold verification (15s) is implemented, and X-ray images of the same basket are bound to passengers to achieve person-bag-image association.

[0103] Step 4: Link flight data.

[0104] By associating passenger identity IDs with airport ACDM or other airport production and operation systems, and matching flight numbers, boarding gates, and boarding deadlines, the system achieves a package-image-person-flight association and binding.

[0105] Step 5: Trace and intercept missed detections.

[0106] Based on the missed X-ray image ID, related information is retrieved to determine the passenger's identity, flight, boarding gate, and boarding time. The passenger's indoor location is located in real time using personnel positioning assistance, and the passenger's location is pushed to the terminal for interception.

[0107] If prohibited items are missed during model detection or manual image review, the following location process will be executed:

[0108] Step 401: Obtain the unique identifier I_xray_id of the missed X-ray image.

[0109] Step 402: Query the passenger identity ID corresponding to I_xray_id through the associated record chain.

[0110] Step 403: Query the passenger's current flight information and boarding gate using the passenger's identity ID.

[0111] Step 404: Combine the airport's indoor positioning system, such as video tracking, Bluetooth positioning, UWB positioning, etc., to obtain the passenger's real-time location at the current moment.

[0112] Step 405: Push the passenger's location information to the security officer's mobile terminal to guide the security officer to quickly locate the passenger.

[0113] By integrating multi-source data such as facial recognition, boarding pass recognition, and RFID recognition with timeline alignment, the system achieves instant alignment of "package-image-person-flight," improving the efficiency of locating passengers after missed detections.

[0114] Through the above embodiments, a pre-established chain of associated records can be used to perform millisecond-level database queries using image ID or identity ID to directly obtain passenger identity and flight information. Combined with an indoor positioning system, passenger location can be obtained in real time. The automated process eliminates the time cost of manual backtracking, significantly reduces the time for locating passengers who have been missed, and significantly improves the response speed and processing efficiency of the security check system.

[0115] Through the above embodiments, an airport indoor positioning system can be introduced. After confirming the passenger's identity, the system can further obtain the passenger's real-time geographic coordinates in the area after security check (isolation area, near the boarding gate). The passenger's location, identity information, and characteristics of prohibited items are packaged and pushed to the security check terminal in the form of map guidance. This allows security personnel to quickly approach the target based on the shortest path, avoiding blind searching in a large area. This effectively improves the success rate of intercepting passengers who have missed inspection for prohibited items and strengthens the closed-loop management capability of airport security checks.

[0116] Through the above embodiments, by recording multi-source data (face, boarding pass, RFID, X-ray image, timestamp) from the moment a passenger enters the security checkpoint to the X-ray imaging process, a complete and tamper-proof data trace is left for each security check behavior. This not only helps to quickly handle missed detection incidents, but also improves the overall security level and management efficiency of the security check system.

[0117] The following is a detailed description with reference to another embodiment.

[0118] Example 2

[0119] This embodiment provides a security inspection image contraband tracing device for security inspection scenarios, which includes multiple implementation units, each of which corresponds to a specific implementation step in the above embodiment one.

[0120] Figure 4 This is a schematic diagram of an optional security inspection image contraband tracing device for security inspection scenarios, according to an embodiment of the present invention. Figure 4 As shown, the security inspection image contraband tracing device for security inspection scenarios may include: a security inspection basket binding unit 41, a security inspection image acquisition unit 42, an association record chain establishment unit 43, and a tracing unit 44.

[0121] Among them, the security basket binding unit 41 is used to bind the collected passenger identity information and flight information with the security basket placed by the passenger when the passenger enters the security check channel.

[0122] The security inspection image acquisition unit 42 is used to acquire baggage security inspection images when the security inspection basket is detected to have entered the security inspection machine range, and to record the image acquisition timestamp and the corresponding security inspection basket label code.

[0123] The association record chain establishment unit 43 is used to establish an association record chain between baggage security inspection images, passenger identity and flight information based on the security basket label code and image acquisition timestamp.

[0124] The missed detection tracing unit 44 is used to query the identity information and flight information of the missed passenger through the associated record chain when a prohibited item is detected in the baggage security inspection image, and to locate the passenger's current location in combination with the airport indoor positioning system, so as to guide security personnel to intercept the item.

[0125] The aforementioned security image-based prohibited item detection tracking device for security check scenarios can bind passenger identity information and flight information to the security basket placed by the passenger when the passenger enters the security check channel via the security basket binding unit 41; when the security image acquisition unit 42 detects that the security basket has entered the range of the security machine, it acquires baggage security images and records the image acquisition timestamp and the corresponding security basket label code; the association record chain establishment unit 43 establishes an association record chain between the baggage security image, passenger identity, and flight information based on the security basket label code and the image acquisition timestamp; and when the prohibited item detection tracking unit 44 detects that prohibited items have been missed in the baggage security image, it queries the identity information and flight information of the passenger who missed the detection through the association record chain, and combines this with the airport indoor positioning system to locate the passenger's current location to guide security personnel to intercept the prohibited item. In this embodiment, a chain of records linking baggage security inspection images, passenger identity, and flight information can be established. By querying the identity information and flight information of passengers who have missed inspection through the chain of records, and combining the airport's indoor positioning system to locate the passenger's current location, security personnel can be guided to intercept the passenger. This reduces the time to find the passenger after a missed inspection from tens of minutes to less than 5 minutes, significantly reducing the time to trace the passenger to whom the contraband was missed, and significantly improving the efficiency of tracing and intercepting missed items. This solves the technical problems of long time consumption and low interception success rate in airport security inspection methods that have missed inspections in related technologies.

[0126] Optionally, the security check basket binding unit includes: a facial image acquisition module, used to acquire a visible light image of the passenger's face through a facial recognition camera when the passenger enters the security check channel, and read the passenger's boarding pass graphic code through a boarding pass scanning device; a feature extraction module, used to extract features from the visible light image to obtain facial feature information; a decoding module, used to decode the boarding pass graphic code to parse out passenger identity information including the passenger's name and flight information including the flight number and seat number; a security check basket label encoding receiving module, used to receive the security check basket label code read by an RFID reader after detecting that a passenger has placed luggage in the security check basket; and a temporary association record determination module, used to bind the facial feature information, passenger identity information, and flight information with the security check basket label code and the time of X-ray image acquisition to obtain a temporary association record.

[0127] Optionally, the security inspection image acquisition unit includes: a baggage image acquisition module, used to acquire a single-view or dual-view image containing the security basket through the security inspection machine when the security basket is detected to enter the range of the security inspection machine, to obtain a baggage security inspection image, and record the image acquisition timestamp and the corresponding security basket label code, wherein the security inspection machine includes: an X-ray machine, and the type of baggage security inspection image includes: an X-ray image.

[0128] Optionally, the associated record chain establishment unit includes: a security basket label code extraction module, used to extract the security basket label code from the temporary associated record and query the X-ray image acquisition time corresponding to the security basket label code; a time difference judgment module, used to determine whether the time difference between the image acquisition timestamp and the X-ray image acquisition time is less than a preset time window threshold; and an associated record chain establishment module, used to confirm that the baggage security image and the passenger identity information and facial feature information in the temporary associated record belong to the same passenger if the time difference is less than the preset time window threshold, and to establish an associated record chain of baggage security image, passenger identity and flight information based on the security basket label code and the image acquisition timestamp.

[0129] Optionally, the missed detection tracing unit includes: a missed detection early warning signal receiving module, used to receive missed detection early warning signals and corresponding baggage security inspection images; a reverse retrieval module, used to use the identifier of the baggage security inspection image to perform a reverse retrieval in the associated record chain to extract the passenger identity information and flight information corresponding to the baggage security inspection image; a missed passenger positioning module, used to query the passenger's current real-time geographic coordinates through the airport indoor positioning system based on the extracted passenger identity information to obtain the current location of the missed passenger; and a guidance and interception module, used to push the current location of the missed passenger to the security inspection terminal to guide security personnel to intercept the passenger.

[0130] Optionally, the guidance and interception module includes: an information packaging submodule, used to package the current location, passenger identity information, and flight information of the missed passenger into a tracing instruction; and a guidance and interception submodule, used to send the tracing instruction to the security terminal responsible for the area where the current location is located via a wireless communication network, and display the real-time location map guidance and passenger identity information of the missed passenger on the security terminal to guide security personnel to the designated location for interception.

[0131] The aforementioned security inspection image contraband tracking device for security inspection scenarios may also include a processor and a memory. The aforementioned security basket binding unit 41, security image acquisition unit 42, associated record chain establishment unit 43, and missed detection tracking unit 44 are all stored in the memory as program units. The processor executes the aforementioned program units stored in the memory to realize the corresponding functions.

[0132] The aforementioned processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and adjusting kernel parameters can enable image-based tracking of contraband items missed in security inspection scenarios.

[0133] The aforementioned memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0134] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored computer program, wherein, when the computer program is running, it controls the device where the computer-readable storage medium is located to execute any one of the above-described security inspection scenario-oriented method for tracing and tracking undetected contraband in security inspection images.

[0135] According to another aspect of the present invention, an electronic device is also provided, including one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement the security inspection image contraband tracing method for security inspection scenarios as described in any of the above embodiments.

[0136] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the security inspection image contraband tracing method for security inspection scenarios described in various embodiments of this application.

[0137] This application also provides a computer program product, including a non-volatile computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the security inspection image contraband tracing method for security inspection scenarios described in various embodiments of this application.

[0138] Figure 5 This is a hardware structure block diagram of an electronic device (or mobile device) that performs a method for tracing missed detection of contraband in security inspection images for security inspection scenarios, according to an embodiment of the present invention. Figure 5 As shown, an electronic device may include one or more ( Figure 5The processor 502 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 504 for storing data may also be included. In addition, it may include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a keyboard, a power supply, and / or a camera. Those skilled in the art will understand that... Figure 5 The structure shown is for illustrative purposes only and does not limit the structure of the electronic device described above. For example, the electronic device may also include components that are more... Figure 5 The more or fewer components shown, or having the same Figure 5 The different configurations shown.

[0139] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0140] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0141] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0142] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0143] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0144] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0145] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for tracing and tracking contraband items missed in security inspection images for security inspection scenarios, characterized in that, include: When passengers enter the security checkpoint, the collected passenger identity information and flight information will be linked to the security bins that passengers place. When the security basket is detected to have entered the security inspection machine's range, a baggage security inspection image is captured, and the image capture timestamp and the corresponding security basket label code are recorded. Based on the security basket label code and the image acquisition timestamp, establish a linking record chain between the baggage security image, passenger identity, and flight information; If prohibited items are detected to have been missed in the baggage security scan image, the identity information and flight information of the missed passenger are queried through the associated record chain, and the current location of the passenger is located in conjunction with the airport indoor positioning system to guide security personnel to intercept the item.

2. The method for tracing missed detection of prohibited items in security inspection images according to claim 1, characterized in that, The steps involved in linking the collected passenger identity and flight information with the security bins placed by passengers as they enter the security checkpoint include: When passengers enter the security checkpoint, a visible light image of the passenger's face is captured by a facial recognition camera, and the graphic code of the passenger's boarding pass is read by a boarding pass scanning device. Feature extraction is performed on the visible light image to obtain facial feature information; The boarding pass graphic code is decoded to extract passenger identity information including the passenger's name and flight information including the flight number and seat number; After detecting that a passenger has placed their luggage in the security bin, the system receives the security bin tag code read by the radio frequency reader. The facial feature information, passenger identity information, and flight information are bound to the security basket label code and the X-ray image acquisition time to obtain a temporary association record.

3. The method for tracing missed detection of prohibited items in security inspection images according to claim 1, characterized in that, When the security basket is detected to have entered the range of the security screening machine, the steps of acquiring baggage security screening images and recording the image acquisition timestamp and the corresponding security basket label code include: When the security basket is detected to have entered the range of the security inspection machine, the security inspection machine acquires a single-view or dual-view image containing the security basket to obtain a baggage security inspection image, and records the image acquisition timestamp and the corresponding security basket label code. The security inspection machine includes an X-ray machine, and the type of baggage security inspection image includes an X-ray image.

4. The method for tracing missed detection of prohibited items in security inspection images for security inspection scenarios according to claim 2, characterized in that, The steps of establishing a link between the baggage security inspection image, passenger identity, and flight information based on the security basket label code and the image acquisition timestamp include: Extract the security basket label code from the temporary association record and query the X-ray image acquisition time corresponding to the security basket label code; Determine whether the time difference between the image acquisition timestamp and the X-ray image acquisition time is less than a preset time window threshold; If the time difference is less than a preset time window threshold, it is confirmed that the baggage security inspection image and the passenger identity information and facial feature information in the temporary association record belong to the same passenger. Based on the security basket label code and the image acquisition timestamp, an association record chain of the baggage security inspection image, passenger identity and flight information is established.

5. The method for tracing missed detection of prohibited items in security inspection images according to claim 1, characterized in that, In the event that prohibited items are detected to have been missed in the baggage security scan image, the steps include: querying the identity and flight information of the missed passenger through the associated record chain, and locating the passenger's current position using the airport's indoor positioning system to guide security personnel in interception; Receive missed detection warning signals and corresponding baggage security inspection images; By using the identifier of the baggage security inspection image to perform a reverse retrieval in the associated record chain, the passenger identity information and flight information corresponding to the baggage security inspection image can be extracted; Based on the extracted passenger identity information, the airport indoor positioning system is used to query the passenger's current real-time geographic coordinates to obtain the current location of the missed passengers. The current location of passengers who have missed the security check is pushed to the security check terminal to guide security personnel to intercept them.

6. The method for tracing missed detection of contraband in security inspection images according to claim 5, characterized in that, The steps for pushing the current location of missed passengers to the security checkpoint to guide security personnel in intercepting them include: The current location, passenger identity information, and flight information of the missed passengers are packaged into a tracing instruction; The tracing instruction is sent to the security check terminal responsible for the area where the current location is located via a wireless communication network. The security check terminal displays a real-time location map guide and the passenger's identity information to guide security personnel to the designated location for interception.

7. A method for tracing missed detection of prohibited items in security inspection images for security inspection scenarios, characterized in that, include: Facial recognition cameras and boarding pass scanning devices are deployed at the entrance of the security checkpoint, and radio frequency identification (RFID) tags are embedded in the security baskets to obtain the security basket tag codes; When passengers enter the security checkpoint, facial images are captured and facial feature information is extracted. At the same time, boarding passes are scanned to obtain passenger identity information and flight information. After passengers place their luggage into the security bin, the security bin label code is read by an RFID reader. When the security bin is detected to enter the X-ray machine, the X-ray machine captures a dual-view X-ray image to obtain a luggage security image, and records the image capture timestamp and the corresponding security bin label code. Based on the security basket label code and the image acquisition timestamp, establish a linking record chain between the baggage security image, passenger identity, and flight information; If prohibited items are detected to have been missed in the baggage security scan image, the identity information and flight information of the missed passenger are queried through the associated record chain, and the current location of the passenger is located in conjunction with the airport indoor positioning system to guide security personnel to intercept the item.

8. A device for tracing and tracking contraband items missed in security inspection images for security inspection scenarios, characterized in that, include: The security basket binding unit is used to bind the collected passenger identity information and flight information with the security basket placed by the passenger when the passenger enters the security check channel; The security inspection image acquisition unit is used to acquire baggage security inspection images when the security inspection basket is detected to have entered the range of the security inspection machine, and to record the image acquisition timestamp and the corresponding security inspection basket label code. The association record chain establishment unit is used to establish an association record chain between the baggage security inspection image, passenger identity and flight information based on the security basket label code and the image acquisition timestamp; The missed detection tracing unit is used to query the identity information and flight information of the missed passenger through the associated record chain when the baggage security inspection image is found to contain prohibited items, and to locate the passenger's current location in conjunction with the airport indoor positioning system, so as to guide security personnel to intercept the passenger.

9. An electronic device, characterized in that, The method includes one or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement the method for tracing and tracking contraband in security inspection images for security inspection scenarios as described in any one of claims 1 to 7.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the security inspection image contraband tracing method for security inspection scenarios as described in any one of claims 1 to 7.

Images