244 results about "Transmission image" patented technology

The invention discloses a photovoltaic glass defect detection method and system based on image recognition, particularly relates to the technical field of visual inspection, and is used for solving the problem that defect recognition is interfered by optical artifacts caused by a film layer interference effect on the surface of coated glass. The method comprises the following steps: extracting interference characteristics through a reflection image to generate an optical artifact distribution diagram, positioning an interference region in a transmission image frequency domain space, constructing a process response template in combination with a sedimentary pulse frequency, and executing polarization coherence screening and time-varying deconvolution collaborative filtering to eliminate artifacts; based on energy ratio dynamic decision reinspection or defect classification process implementation, inherent optical noise and real physical defects of a material are effectively separated, and the accuracy and reliability of coated glass defect detection are remarkably improved.

The invention discloses a power transmission image compression quality evaluation method based on multichannel fusion, belongs to the technical field of smart power grids, and solves the problem of how to enhance adaptive evaluation performance of image quality in scenes with different compression ratios. A multichannel feature processing module introduces learnable offset to realize dynamic alignment and effective fusion of multichannel features; the multi-scale attention fusion module is combined with multi-scale feature extraction and an attention mechanism, learnable position codes are introduced, and the sensitivity to local structure changes is enhanced while the global perception ability is ensured; the self-adaptive quality evaluation module captures different scale features and local information by constructing residual connection and a multi-branch structure, performs weighted fusion on multi-channel fusion features in combination with a dynamic weight generation mechanism, and realizes accurate judgment of the quality of a complex scene image under different compression levels; while the image compression distortion perception capability is improved, the adaptive evaluation performance of the image quality in scenes with different compression ratios is effectively enhanced.

The invention provides an image data secure transmission method, computing equipment and a computer storage medium. The method is applied to a data sender, and comprises the following steps: executing a first image encryption algorithm, and performing encryption processing on a transmission image through an image key to obtain a ciphertext of the transmission image; executing a first key encryption algorithm, and performing encryption processing on the image key through an encryption key to obtain an encrypted image key; the first image encryption algorithm is different from the first key encryption algorithm; and forming a transmission data packet from the ciphertext, the encryption key and the encrypted image key, and transmitting the transmission data packet to a data receiver. Therefore, a proper image encryption algorithm is adopted for the image data, and a proper key encryption algorithm is adopted for the image key, so that real-time performance and security are both considered in the image data encryption process through a mixed encryption mode.

The invention belongs to the technical field of bridge structure defects, and particularly discloses an underwater bridge structure defect identification method based on machine vision, and the method comprises the steps: firstly, employing a water surface monitoring camera to detect water surface moving objects around a pier, and carrying out the recognition of the underwater bridge structure defects based on the types, distribution density and motion trails of the objects; constructing a static distribution interference factor and a dynamic motion interference factor, and performing weighted fusion to generate a water body detection interference coefficient. Meanwhile, the water turbidity and the real-time flow velocity are obtained by means of an underwater sensor, and the light supplementing distance, the red light proportion and the shutter speed are dynamically adjusted in combination with the water detection interference coefficient. Then, the ROV is controlled to descend with the axis of the pier as the spiral center, visible light and ray transmission images are synchronously collected according to the adjusted parameters, a panoramic image is formed through fusion splicing, finally, defect danger indexes are output through image recognition and fed back, efficient detection and accurate evaluation of the state of the pier are achieved, and reliability and effectiveness of defect recognition are enhanced.

The invention discloses a femtosecond laser three-dimensional pumping detection imaging method, which belongs to the technical field of ultrafast laser observation, and particularly comprises the following steps of: generating a laser pulse by using an ultrashort pulse laser, splitting the laser pulse by using a beam splitter to generate two beams of pulse light, namely pumping light and detection light, ablating a material by using the pumping light as an excitation source, reflection or transmission imaging is realized at different moments after the probe light passes through the time delay table; a detection angle is freely adjusted in space around a sample to be detected by rotating the light path propagation system, and a detection mode is switched between a reflection mode and a detection mode by rotating the imaging system; a multi-angle two-dimensional transient image is fused into a three-dimensional graph, plasma and a double-temperature model are expanded, the electronic dynamic characteristics of three-dimensional space distribution and the plasma eruption process can be calculated in an ultrafast scale, and three-dimensional information of a femtosecond laser ablation material is reduced. The problem that an existing imaging method cannot achieve three-dimensional imaging of the femtosecond laser processing ultrafast process at any angle in the space is solved.

The invention provides a physical guidance-based sparse coding-driven underwater image enhancement method, a program, equipment and a storage medium. The method comprises the following steps: constructing a physical guidance preprocessing method based on a Jaffe-McGammy model, and adaptively estimating an underwater transmission image and background light to realize preliminary degradation recovery; elastic regularization sparse coding is adopted, and through sparsity and smoothness combined constraint, salient structure information such as edges and textures of the image is effectively extracted, so that the image definition and the detail recovery capability are enhanced; cross-channel attention fusion is adopted, a multi-scale context modeling and channel interaction mechanism is introduced, and a physical degradation graph is combined for guidance, so that color consistency and semantic expression integrity between channels are remarkably improved, and the problems of color shift and information loss in an existing method are solved. According to the method, through joint optimization of multiple loss functions, the constructed underwater image enhancement network keeps the illumination accuracy, texture continuity and structural integrity of the image in multiple dimensions at the same time.

The invention relates to a mask defect detection system based on polarization transmission and reflection combination. The system comprises a laser; the first polarization beam splitter is used for carrying out polarization beam splitting on the laser beam to generate P polarized light and S polarized light; the transmission light path is used for performing optical processing and polarization state adjustment on the P polarized light and then projecting the P polarized light to a mask plate; the reflection light path is used for performing optical processing and polarization state adjustment on the S polarized light and then projecting the S polarized light to a mask plate; the imaging light path is used for imaging when the P polarized light is transmitted from the mask plate to obtain a transmission image, and imaging when the S polarized light is reflected from the mask plate to obtain a reflection image; and the storage and operation module is connected with the imaging light path and is used for storing and operating the transmission image and the reflection image so as to analyze whether the mask has defects or not. According to the invention, transmission and reflection dual-polarization light path imaging is adopted, and various mask plate defects can be simultaneously and effectively detected.

An X-ray inspection device includes a transport unit, an X-ray irradiation unit configured to irradiate an article with X-rays, an X-ray detection unit configured to detect the X-rays in each of a plurality of energy bands, an X-ray transmission image generation unit configured to generate a plurality of X-ray transmission images on the basis of the X-rays in each of the plurality of energy bands, and an inspection unit configured to inspect whether or not a foreign matter is present or absent in the article on the basis of a difference image between the plurality of generated X-ray transmission images. The inspection unit detects a first foreign matter having a higher specific gravity than the article using a first threshold value and detects a second foreign matter having a lower specific gravity than the article using a second threshold value different from the first threshold value.

The invention provides a sterile filling process control method and system for midazolam oral liquid nitrogen charging protection, and relates to the technical field of medicine filling process control. After midazolam oral liquid is subjected to nitrogen charging, a headspace gas multispectral image sequence in a bottle before sealing is collected through a transmission imaging system integrated with a filling line; extracting oxygen characteristic absorption wave band light intensity attenuation data through spectrum separation, and generating a bottleneck plane oxygen two-dimensional concentration diagram; calculating the local oxygen partial pressure of the pixel, and constructing a three-dimensional oxygen concentration field and marking an oxygen-enriched area by combining pre-stored geometric parameters of the bottle body; and then the model reference adaptive controller is used for comparing the model with an ideal nitrogen model to generate supplementary parameters containing purging angle, intensity and time, an execution mechanism is driven to perform fixed-point pulse purging, and after verification reaches the standard, a screw cap is used for sealing, so that accurate detection, directional processing and standard verification of the headspace oxygen-enriched area in the midazolam oral liquid bottle can be realized, and the safety of the midazolam oral liquid bottle is ensured. And the oxygen concentration before sealing meets the standard.

The beam limiting device structure comprises a shell assembly, a chopping disc and a driving structure. The shell assembly comprises a front shell and a rear shell, the front shell and the rear shell are oppositely combined to form a cavity, the rear shell is provided with a fan-shaped collimation structure, the fan-shaped collimation structure comprises a transversely formed fan-shaped collimation slit, the front shell is provided with a groove, and the groove is aligned with the fan-shaped collimation slit. The chopping disc is arranged in the cavity, and a plurality of back scattering imaging slits formed in the radial direction and at least one transmission imaging slit formed in the tangential direction are formed in the chopping disc. And the driving structure is in communication connection with the chopping disc to drive the chopping disc to rotate, so that the transmission imaging slits and the fan-shaped collimation slits are matched to form a transmission imaging channel, and the plurality of back scattering imaging slits and the fan-shaped collimation slits are alternately intersected to form a back scattering imaging channel which reciprocates periodically. The double detection requirements for transmission imaging and back scattering imaging can be met at the same time.

The invention belongs to the technical field of image processing, and relates to an egg surface microcrack detection method and system based on machine vision. The method comprises the following steps: acquiring a transmission image of an egg, performing spatial calibration, determining a geometric center and a long axis scale of an egg region, and establishing a polar coordinate mapping relation of each pixel point; according to the linear distance from each pixel point to the geometric center and the included angle relative to the long axis direction, the geometric sensitivity weight of each pixel point is evaluated, and the optical path distortion degree of the edge high-curvature area is represented; extracting contrast basic energy of the pixel points by using a local space window, and carrying out nonlinear evolution on a local gray gradient by combining with a geometric sensitivity weight to obtain an adaptive contrast energy evolution result; and coupling the local background variance and the geometric sensitivity weight, and calculating the crack identification confidence of each pixel point so as to carry out identification decision of the egg surface microcracks. According to the invention, extremely fine crack signals can be captured, and accurate detection of the microcracks on the surface of the egg is realized.

The present disclosure relates to the technical field of radiation imaging. Provided are an image processing method and apparatus, and a transmission scanning system. The image processing method comprises: performing sampling processing on a transmission image, so as to obtain an image to be processed, wherein the transmission image is obtained by using a multi-column detector to detect the transmission intensity of an object during transmission scanning; determining a region to be identified in said image; using a candidate depth to perform reconstruction processing on said region, so as to obtain a reconstruction result for said region; determining the edge sharpness of the reconstruction result; and when the edge sharpness is greater than a sharpness threshold value, using the candidate depth as the depth of said region.

The invention relates to an underground engineering fire hazard hazard detection and damage evaluation method, and belongs to the technical field of underground engineering safety monitoring. The method is based on the principle of muon transmission imaging, a three-dimensional monitoring network is constructed by arranging ground and drilling hole detection arrays, data such as muon flux, energy and incident angles are collected, coal rock density distribution is inverted, and a density situation map is generated. A weighted comprehensive discrimination model is established by analyzing carbon content change and combining fault, fracture and permeability characteristics, and a fire abnormal area is identified. Furthermore, damage variables are defined according to density changes before and after combustion, a fire area is divided into a core damage area, a transition damage area and an edge damage area, and quantitative and graded evaluation of the damage degree is achieved. The device has the characteristics of non-invasion, deep penetration and high resolution, is suitable for fire dynamic monitoring and damage evaluation of underground engineering such as coal mines and tunnels, and provides a reliable basis for fire early warning and post-disaster repair.

The invention discloses an optical lens imaging system and an optical lens defect detection method, and relates to the field of optical lens detection.The system comprises a conveying belt, a large-face transmission imaging module, a large-face reflection imaging module, a small-face reflection imaging module, a small-face transmission imaging module and a control module, and different types of light sources are arranged at four detection points respectively. Multi-angle imaging is carried out from the upper direction and the lower direction of a lens, a grating modulation technology is adopted for parallel light transmission point positions, the internal defect display effect is enhanced through differential processing, and the detection method comprises the steps that preprocessing such as segmentation, difference, enhancement and registration is carried out on six images; constructing a multi-branch feature extraction network, and adopting a priori guided feature fusion mechanism; constructing a defect detector comprising classification, positioning and quantification; according to the invention, comprehensive detection of defects on the surface and inside of the lens is realized, the sensitivity is high, the efficiency is high, the structure is compact, and the method is suitable for industrial mass production.

An X-ray inspection apparatus includes a transport unit configured to transport an article, an electromagnetic wave irradiation unit configured to irradiate the article with a first electromagnetic wave in a first energy band and a second electromagnetic wave in a second energy band, an electromagnetic wave sensor configured to detect the first electromagnetic wave and the second electromagnetic wave, and a control unit to which a detection result is input. The control unit is configured to generate a first transmission image based on a detection result of the first electromagnetic wave and a second transmission image based on a detection result of the second electromagnetic wave, to perform image processing including a subtraction process on the first transmission image and the second transmission image, and to determine whether or not a foreign material is included in the article on the basis of a difference image.

The invention relates to a computer-implemented method for providing a medical finding to a requesting entity, the method comprising a plurality of steps. A step is directed to obtaining at an evaluating entity, medical image data from a requesting entity, the requesting entity being remote from the evaluating entity. Another step is directed to determining, at the evaluating entity, at least one medical finding based on the obtained medical image data. Another step is directed to generating transmission image data. Another step is directed to embedding at least one of the determined medical findings as text in the transmission image data. Another step is directed to providing the at least one medical finding to the requesting entity by means of transmitting the transmission image data to the requesting entity.

The invention belongs to the technical field of image processing, and particularly relates to an egg quality identification method based on image processing, and the method comprises the steps: obtaining an RGB image of an egg, and converting the RGB image into an internal transmission image; respectively calculating a substrate attenuation index reflecting the color of the eggshell substrate and a local spot response index reflecting the surface spot texture; performing dynamic weighted fusion on the two indexes through principal component analysis to generate a comprehensive fusion attenuation index, and constructing a nonlinear compensation factor according to the comprehensive fusion attenuation index; performing brightness compensation on the internal transmission image by using the factor to generate a corrected image capable of clearly reflecting the internal condition; and comprehensive detection is performed in combination with an original RGB image, so that the defects such as blood spots, meat spots and cracks are accurately identified. According to the invention, the accuracy and reliability of nondestructive testing of egg quality are improved.

The invention discloses a converter valve platinum electrode scaling thickness detection method based on image gray analysis, and belongs to the technical field of converter valve equipment nondestructive testing. The invention aims to solve the problems of low efficiency and equipment damage caused by the fact that the scaling thickness can be measured only by halting and disassembling an electrode in the prior art. The method comprises the following steps: firstly, acquiring an X-ray transmission image of a platinum electrode and preprocessing the X-ray transmission image; then interactively determining a measurement line segment penetrating through the scaling area on the image; extracting gray values of all pixel points on the line segment to form gray distribution data; then analyzing the data to identify two feature points representing the boundary of the scaling layer and the electrode substrate; and finally, calculating the actual physical thickness of the scaling layer according to the pixel distance between the two feature points and the system calibration coefficient. According to the technical scheme, the scaling thickness on the surface of the platinum electrode in the converter valve cooling system can be detected online, losslessly and accurately, and a basis is provided for state evaluation and maintenance decision.

A system is provided that includes one or more sources used to irradiate one or more solids extracted from a reservoir with an energy source and one or more detectors used to acquire one or more transmission images, wherein the one or more transmission images comprise one or more scans. The system also includes a processing circuitry and a memory, accessible by the processing circuitry, the memory storing instructions that, when executed by the processing circuitry cause the processing circuitry to perform operations. The operations may include collecting one or more scans of the one or more solids moving through an imaging zone, reconstructing one or more tomographic images of the one or more solids based on the one or more scans, and extracting one or more physical properties of the solids based on the one or more tomographic images.

The invention relates to the technical field of image processing, in particular to a coating quality visual detection method and system for a spin-coated optical filter. The method comprises the following steps: acquiring gray level images of a plurality of transmission images of an optical filter after light source transmission under at least three incidence angles in a plurality of orientations; taking a difference image between each gray-scale image and the background gray-scale image as a residual image; performing binarization processing on the residual image to obtain a corresponding binary image; performing connected domain analysis on each binary image to obtain a suspected defect region of each binary image; carrying out trend test on each suspected defect area to obtain trend direction statistics of corresponding directions; in response to the fact that the trend statistics in all the directions are consistent, determining that the coating film uniformity is abnormal in the suspected area; on the contrary, the suspected defect area is interfered by inconsistent tensity. According to the scheme, the uniformity of the coating layer on the optical filter can be accurately detected so as to evaluate whether the coating quality of the surface of the optical filter is qualified or not.

Perform appropriate retesting. [Solution] A management system (1) according to one embodiment includes a first storage unit (110) that associates an X-ray transmission image with device characteristics indicating the characteristics of each X-ray inspection device (10) that generated the X-ray transmission image and stores them as a re-inspection image, and a re-inspection unit (120) that uses a learning model for detecting defects in an item and learns a learning model learned for each device characteristic to re-inspect the re-inspection image stored in the first storage unit (110).

A sorting support apparatus is provided with: an input part that inputs a transmission image obtained by radiating an inspection target with electromagnetic waves; a storage part that stores a plurality of learning models optimized respectively for at least one article and being associated with an assumed usage condition; and a determination part that selects one of the learning models based on a specified usage condition and uses the learning model to determine whether or not the one or more articles is contained in the inspection target.

To provide an X-ray inspection device, an X-ray inspection system, and an X-ray inspection method capable of preventing deterioration of inspection accuracy of an article even if a conveyance speed of the article is increased.SOLUTION: The X-ray inspection apparatus includes a conveyor that conveys an article, an electromagnetic wave irradiator that irradiates the article with a first electromagnetic wave in a first energy band and a second electromagnetic wave in a second energy band, an electromagnetic wave sensor that detects the first electromagnetic wave and the second electromagnetic wave with which the article is irradiated, and a controller to which a detection result of the electromagnetic wave sensor is input. The control unit generates a first transmission image based on a detection result of the first electromagnetic wave and a second transmission image based on a detection result of the second electromagnetic wave, performs image processing including subtraction processing on the first transmission image and the second transmission image by using a luminance distribution related to a background other than the article shown in the first transmission image and the second transmission image, and determines presence or absence of a foreign substance contained in the article based on a difference image obtained by the subtraction processing.SELECTED DRAWING: Figure 2

A virtual image display device includes a first display element that is an image light generation device, a first projection optical system configured to project image light emitted from the first display element, and a first combiner disposed inclined with respect to an optical path portion of the image light emitted from the first projection optical system, the combiner including a transmissive mirror surface configured to transmit the image light. The transmissive mirror surface has a curved surface shape with identical sag amounts at effective area ends in vertical and lateral directions that are two directions orthogonal to each other.

The utility model provides a light engine structure. The light engine structure comprises a display, a light combining element, a lens assembly, a mounting frame body and a first connecting structure, the display is used for emitting image light; the light combining element comprises a light-out surface and a light-in surface and is used for receiving and transmitting the image light so as to change a light path of the image light; the lens assembly is located on one side of the light-emitting surface of the light combining element and used for modulating image light from the light-emitting surface and then emitting the image light; a mounting space is formed in the mounting frame body, and a light outlet and a light inlet which are communicated with the mounting space are formed in the mounting frame body; the light combining element is positioned in the mounting space; the first connecting structure is fixedly connected to the light outlet of the mounting frame, the first connecting structure is provided with a first opening communicated with the light outlet, the first connecting structure is connected with the lens assembly in a clamped mode, the optical axis of the lens assembly coincides with the optical axis of the light combining element, and the center of the first opening and the center of the light outlet are both located on the optical axis of the lens assembly.

To provide a method for evaluating adhesion between rubber and metal, that enables the adhesion between vulcanized rubber and metal to be grasped with high accuracy.SOLUTION: In a data acquisition step S110, an elongated sample Sb is used, and at least one component of the metal components derived from metals is treated as the analysis target component, and metal compounds with different analysis target components and metal compounds of the same type of analysis target component but with different valences are treated as elements of different types, and X-ray transmission image data D1b and analysis image data D2b of the elongated sample Sb in a state of being elongated by an elongation device 2 are acquired. In an evaluation step S120, a calculation device 4 performs data processing to identify voids present in the elongated sample Sb based on the X-ray transmission image data D1b, and determines the type of each element of the analysis target component that exists around the position in the analysis image data D2b that corresponds to the position where the void is identified in the X-ray transmission image data D1b.SELECTED DRAWING: Figure 2

The invention relates to an underwater nondestructive testing system. The system comprises an overwater control subsystem and a ship testing subsystem, the overwater control subsystem is used for determining and sending a detection control instruction corresponding to a to-be-detected object to the ship detection subsystem according to the to-be-detected object in the to-be-detected ship; the ship detection subsystem is used for carrying out cosmic ray muon transmission detection on the to-be-detected object according to the detection control instruction and determining a detection result of the to-be-detected object, and the detection result comprises structure measurement information and material measurement information of the to-be-detected object. According to the underwater nondestructive testing system provided by the invention, underwater nondestructive testing on the cargo ship can be realized by utilizing cosmic ray muon transmission imaging, the structure and the material of any to-be-tested object in the cargo ship are analyzed, the to-be-tested object does not need to be loaded and unloaded repeatedly, and the underwater nondestructive testing system has relatively high detection accuracy and detection efficiency; the method can be well suitable for application scenes such as short-time berthing of cargo ships or non-berthing on the water surface.

The application discloses a kind of high-precision ultrasonic imaging identification methods based on universe μ picture, steps are as follows: S1, generate universe μ imaging feature map;S2, construct and train core defect detection network, output the defect probability map of the defect area of universe μ imaging feature map is identified;S3, the defect area of imaging object is ultrasonically imaged, and color mapping reconstruction is obtained ultrasonic color image;S4, respectively acquire the non-defect area mask of universe μ imaging feature map and the defect area mask of ultrasonic color image, and image fusion is obtained fusion image by;The method is suitable for large-scale high-precision nondestructive imaging detection, which can be realized on the basis of large-scale, no dose transmission imaging using universe μ, effectively identify the defect area and be fused with the ultrasonic imaging of defect area, realize the high-precision imaging of local defect position, and have the advantages of nondestructive imaging and completely no radiation.

The application discloses a kind of ART and BM3D joint tomography gamma scanning transmission image reconstruction method, comprising: measuring transmission gamma spectrum and calculating projection data;Divide layer voxel and calculate voxel attenuation track length;Establish the underdetermined equation set of transmission image reconstruction;Set the initial value of transmission image;ART iteration is used and the noise image is output;The noise image of ART output is handled using BM3D to denoise;Repeat iteration and output final transmission image.The scheme solves the technical problem of low accuracy of existing projection data under the condition of severe undersampling tomography gamma scanning transmission image reconstruction, realizes transmission image reconstruction while improving the accuracy of transmission image reconstruction, the method directly calls BM3D module in computer program, easy to realize, has popularization value for data undersampling image reconstruction, and strong universality.

The invention relates to the technical field of liquid metal measurement, and particularly discloses an experimental device for measuring liquid metal performance, which comprises a transmission imaging assembly, a vacuum assembly, a liquid metal loading assembly, a temperature sensor, a heating assembly and a cooling assembly, the liquid metal loading assembly is used for loading liquid metal, the vacuum assembly is used for providing a vacuum environment for the liquid metal during an experiment, the heating assembly is connected with the liquid metal loading assembly, the temperature sensor is arranged right opposite to the liquid metal loading assembly, the transmission imaging assembly is arranged right opposite to the vacuum assembly, and the cooling assembly is connected with the liquid metal loading assembly. According to the invention, the thermal conductivity of the liquid metal can be detected at different temperatures and different film thicknesses, and the influence of temperature rise change on the form of the liquid metal can be detected; detecting the contact thermal resistance of the liquid metal; and the dripping conditions of the liquid metal under different working conditions are detected.