Hand posture recognition-based flat panel detector positioning system, method and terminal

Abstract

The tablet detector positioning system, method and terminal based on human hand posture recognition of the present application, through human hand posture recognition of the collected image information in the process of placing the tablet detector behind the measured object, combined with the angle information of the tablet detector detected in real time, the final placement position information of the tablet detector is obtained, and the relative position of the current tablet detector and the X-ray source is calculated. The present application recognizes the posture of the hand of the person operating the tablet detector based on visual positioning technology, and then uses the measured angle change information as an auxiliary to accurately obtain the relative position between the X-ray source and the tablet detector. Not only solves the problem that the current mobile DR tablet detector cannot recognize the specific position under the shielding condition and is easy to deviate, but also is convenient to operate and has better shooting effect, reduces the misoperation and shooting times.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mobile DR, in particular to a flat panel detector positioning system and method based on hand gesture recognition. BACKGROUND

[0002] In the field of mobile DR, an X-ray source irradiates on a flat panel detector through a beam projector. If the projection surface is too large, unnecessary parts will be irradiated. If the projection surface is too small, necessary parts will be missed.

[0003] The commonly used method is probabilistic positioning, that is, a filament or a laser spot is projected onto the front side (the side facing the radiation source) of the object / human body, and then the position where the flat panel detector should be placed behind the object / human body is roughly calculated by the human eye. Then the flat panel detector is placed near the position. The problem is that the object / human body may block the projection, which is easy to cause large deviation in alignment. In addition, it is difficult for the flat panel detector to align with the X-ray source in the blocked case, resulting in an undesirable shooting effect, and even the need for re-shooting. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the present application aims to provide a flat panel detector positioning system and method based on hand gesture recognition, which solves the above technical problems in the prior art.

[0005] To achieve the above object and other related objects, the present application provides a flat panel detector positioning system based on hand gesture recognition, which comprises: an image acquisition module, configured to acquire image information in the process of placing a flat panel detector behind a measured object; an angle acquisition module, arranged on the flat panel detector, configured to detect angle information of the flat panel detector in real time; and a processing module, connected to the image acquisition module and the angle acquisition module, configured to perform hand gesture recognition on the image information, and calculate the final placement position information of the flat panel detector according to the acquired angle information of the flat panel detector, so as to calculate the relative position of the current flat panel detector and the X-ray source based on the final placement position information.

[0006] In an embodiment of the present application, the image acquisition module is configured to acquire placement start image information before placing the flat panel detector, and acquire placement end image information when the hand releases the flat panel detector.

[0007] In an embodiment of the present application, the system further comprises a hand release judgment sensor module, arranged on the flat panel detector, configured to send a hand release flat panel detector signal when detecting that the hand releases the flat panel detector, so as to enable the image acquisition module to acquire the placement end image information when the hand releases the flat panel detector.

[0008] In an embodiment of the present application, the processing module comprises: a first relative position calculation unit, configured to obtain relative position information of the flat panel detector center point and the wrist center point according to the placement start image information; a flat panel detector placement position calculation unit, connected to the first relative position calculation unit, configured to obtain final placement position information of the flat panel detector center point according to the placement end image information and angle information of the flat panel detector collected at the moment when the hand releases the flat panel detector based on the relative position information of the flat panel detector center point and the wrist center point; and a second relative position calculation unit, connected to the flat panel detector placement position calculation unit, configured to obtain relative position information of the flat panel detector and the X-ray source based on the final placement position information of the flat panel detector center point and position information of the X-ray source.

[0009] In an embodiment of the present application, the obtaining of the relative position information of the flat panel detector center point and the wrist center point according to the placement start image information comprises: identifying initial position information of the flat panel detector center point and initial position information of the wrist center point according to the placement start image information; and calculating the relative position information of the flat panel detector center point and the wrist center point based on the initial position information of the flat panel detector center point and the initial position information of the wrist center point; wherein the relative position information comprises a distance between the flat panel detector center point and the wrist center point.

[0010] In an embodiment of the present application, the obtaining of the final placement position information of the flat panel detector center point according to the placement end image information and the angle information of the flat panel detector collected at the moment when the hand releases the flat panel detector based on the relative position information of the flat panel detector center point and the wrist center point comprises: obtaining current position information of the wrist center point according to the placement end image information; and calculating the final placement position information of the flat panel detector center point based on the current position information of the wrist center point, the angle information of the flat panel detector collected at the moment when the hand releases the flat panel detector and the distance between the flat panel detector center point and the wrist center point.

[0011] In an embodiment of the present application, the angle collection module comprises one or more gyroscopes.

[0012] To achieve the above object and other related objects, the present application provides a flat panel detector positioning method based on human hand posture recognition, which comprises: acquiring image information collected by an image acquisition module during a process in which a flat panel detector held by a hand is placed behind a measured object and angle information of the flat panel detector detected by an angle acquisition module arranged on the flat panel detector in real time; performing human hand posture recognition on the image information and calculating final placement position information of the flat panel detector according to the collected angle information of the flat panel detector to calculate a relative position of the current flat panel detector and an X-ray source based on the final placement position information.

[0013] In an embodiment of the present application, the human hand posture recognition on the image information and the calculation of the final placement position information of the flat panel detector according to the collected angle information of the flat panel detector to calculate the relative position of the current flat panel detector and the X-ray source based on the final placement position information comprises: obtaining relative position information of a center point of the flat panel detector and a center point of a wrist according to placement start image information collected by the image acquisition module before the flat panel detector is placed; obtaining final placement position information of the center point of the flat panel detector based on the relative position information of the center point of the flat panel detector and the center point of the wrist, according to placement end image information collected by the image acquisition module at a moment when the flat panel detector is released by the hand and the angle information of the flat panel detector collected by the angle acquisition module at the moment when the flat panel detector is released by the hand; and obtaining the relative position information of the flat panel detector and the X-ray source based on the final placement position information of the center point of the flat panel detector and position information of the X-ray source.

[0014] To achieve the above object and other related objects, the present application provides a flat panel detector positioning terminal based on human hand posture recognition, which comprises: one or more memories and one or more processors; the one or more memories are used for storing computer programs; and the one or more processors are connected to the memories and used for running the computer programs to execute the flat panel detector positioning method based on human hand posture recognition.

[0015] As described above, the present application is a flat panel detector positioning system, method and terminal based on human hand posture recognition, which has the following beneficial effects: the present application performs human hand posture recognition on the image information collected during the process of placing the flat panel detector behind the measured object by hand, obtains the final placement position information of the flat panel detector in combination with the angle information of the flat panel detector detected in real time, and calculates the relative position of the current flat panel detector and the X-ray source. The present application identifies the posture of the hand of the person operating the flat panel detector based on visual positioning technology, and then obtains the relative position between the X-ray source and the flat panel detector with the assistance of the measured angle change information, which not only solves the problem that the flat panel detector of the current mobile DR cannot recognize the specific position and is easily offset in the case of being blocked, but also facilitates operation and has better shooting effect, and reduces the number of misoperations and shooting times. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure schematic diagram of a flat panel detector positioning system based on human hand posture recognition in an embodiment of the present application is shown.

[0017] Figure 2 A two-dimensional position relationship diagram of a flat panel detector and a wrist center point in an embodiment of the present application is shown.

[0018] Figure 3 A two-dimensional position relationship diagram of a flat panel detector and a wrist center point in an embodiment of the present application is shown.

[0019] Figure 4 A flowchart of a flat panel detector positioning method based on human hand posture recognition in an embodiment of the present application is shown.

[0020] Figure 5 A structure schematic diagram of a flat panel detector positioning terminal based on human hand posture recognition in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described in detail below with specific reference to the drawings. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. The present application can also be implemented or applied in different specific embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0022] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, unless the above context clearly dictates otherwise. Spatially relative terms, such as "upper," "lower," "left," "right," "below," "above," "bottom," "top," and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device described herein is turned over from the orientation depicted in the figure, a spatially relative descriptor used with respect to the figure will need to be interpreted differently.

[0023] Throughout this specification, when it is said that a certain part is "connected" to another part, it includes not only the case of "direct connection" but also the case of "indirect connection" in which other elements are interposed therebetween. In addition, when it is said that a certain part "includes" a certain constituent element, other constituent elements are not excluded unless specifically stated to the contrary, and it means that other constituent elements can be further included.

[0024] The terms first, second, third, etc. that are mentioned herein are used to explain various parts, components, regions, layers and / or sections, but are not limited thereto. These terms are used only to distinguish a certain part, component, region, layer or section from other parts, components, regions, layers or sections. Therefore, the first part, component, region, layer or section described below can be referred to as the second part, component, region, layer or section within the scope of the present application.

[0025] Further, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises", "comprising", "includes" and / or "including" when used herein, specify the presence of stated features, operations, elements, components, items, and / or objects, but do not preclude the presence or addition of one or more other features, operations, elements, components, items, and / or objects. As used herein, the term "or" and "and / or" is construed to be inclusive, or means one and any combination of the items. Thus, "A, B or C" or "A, B and / or C" means any of the following: A; B; C; A and B; A and C; B and C; A, B and C. This definition applies regardless of the lack of any occurring features, functions or operations, combinations thereof and / or exclusions thereof.

[0026] The application provides a flat panel detector positioning system and method based on human hand posture recognition and a terminal.

[0027] The application will be described in detail below with reference to the accompanying drawings, and the skilled in the art can easily implement the application. The application can be embodied in various forms, and is not limited to the embodiments described herein.

[0028] As Figure 1 A structure diagram of a flat panel detector positioning system based on human hand posture recognition is shown in the embodiments of the application.

[0029] The structure includes:

[0030] An image acquisition module 1 is configured to acquire image information of a process in which a flat panel detector is placed behind a measured object. During the detection process, a worker places the flat panel detector behind the measured object, and then releases the flat panel detector after the placement, and then performs a subsequent detection process. The image acquisition module 1 can be one or more image acquisition devices capable of image acquisition, such as a high-speed camera.

[0031] An angle acquisition module 2 is arranged on the flat panel detector 1 and configured to detect angle information of the flat panel detector in real time. The angle acquisition module 2 can include one or more angle sensors configured to acquire angle change information of the flat panel detector.

[0032] A processing module 3 is connected to the image acquisition module 1 and the angle acquisition module 2, and is configured to perform human hand posture recognition on the image information, and calculate the final placement position information of the flat panel detector according to the acquired angle information of the flat panel detector, so as to calculate the relative position of the flat panel detector and an X-ray source based on the final placement position information.

[0033] In one embodiment, the image acquisition module 1 is used to acquire placement start image information before placing the tablet detector and placement end image information when the hand releases the tablet detector. Specifically, before the hand holds the tablet detector and inserts it behind the object being measured, the placement start image information is acquired. Since the detector is not obstructed, the placement start image information includes: a complete image of the detector and an image of the wrist, and the detector image includes the center point of the detector, and the wrist image includes: the center point of the wrist; after the tablet detector is placed, the hand releases the tablet detector, and the placement end image information is acquired at the moment the hand releases the tablet detector. Since the tablet detector is obstructed, the placement end image information includes: the center point of the wrist.

[0034] In one embodiment, the system further includes a release detection sensor module, disposed on the flat panel detector, for sending a release detector signal when the system detects that the hand has been released from the flat panel detector, so that the image acquisition module can acquire the placement end image information at the moment the hand is released from the flat panel detector. For example, when the hand is gripping the flat panel detector, the sensor provides a high or low potential signal, and when the hand is released, the sensor provides the opposite signal.

[0035] In one embodiment, the processing module includes:

[0036] The first relative position calculation unit is used to obtain the relative position information between the center point of the flat panel detector and the center point of the wrist based on the placement start image information.

[0037] A flat panel detector placement position calculation unit, connected to the first relative position calculation unit, is used to obtain the final placement position information of the center point of the flat panel detector based on the relative position information of the center point of the flat panel detector and the center point of the wrist, according to the placement end image information and the angle information of the flat panel detector collected at the moment the hand releases the flat panel detector.

[0038] The second relative position calculation unit is connected to the flat panel detector placement position calculation unit and is used to obtain the relative position information of the flat panel detector and the X-ray source based on the final placement position information of the center point of the flat panel detector and the position information of the X-ray source.

[0039] In one embodiment, such as Figure 2 The image shown is a two-dimensional positional relationship diagram between the flat panel detector and the center point of the wrist before the flat panel detector is placed, with the x-axis and y-axis directions as shown. The image acquired at this time contains the initial position information of both the center point of the flat panel detector and the center point of the wrist.

[0040] Specifically, obtaining the relative position information between the center point of the flat panel detector and the center point of the wrist based on the placement start image information includes:

[0041] According to the placement start image information, initial position information of the flat panel detector center point and initial position information of the wrist center point are identified; specifically, the initial position information is two-dimensional coordinate information, that is, the initial position information of the flat panel detector center point is (x0, y0), and the initial position information of the wrist center point is (x1, y1).

[0042] Based on the initial position information of the flat panel detector center point and the initial position information of the wrist center point, relative position information of the flat panel detector center point and the wrist center point is obtained; specifically, the relative position information can be identified by visual positioning before placement, which includes: the distance r between the flat panel detector center point and the wrist center point and the angle value of the current flat panel detector; wherein the angle value of the current flat panel detector includes: the angle value a1 relative to the x direction and the angle value b1 relative to the y direction; at this time, the angle acquisition module acquires three-dimensional angle information.

[0043] In an embodiment, as shown in Figure 3 It is a two-dimensional position relationship diagram of the flat panel detector and the wrist center point at the moment when the hand releases the flat panel detector after the flat panel detector is placed; at this time, the image acquired only contains the current position information corresponding to the wrist center point;

[0044] Based on the relative position information of the flat panel detector center point and the wrist center point, the final placement position information of the flat panel detector center point is obtained according to the placement end image information and the angle information of the flat panel detector acquired at the moment when the hand releases the flat panel detector, which includes:

[0045] According to the placement end image information, the current position information of the wrist center point is obtained; specifically, under the condition that the detector behind the measured object is not visible, the current position information of the wrist center point can be identified as (x2, y2).

[0046] The final placement position information of the flat panel detector center point is calculated based on the current position information of the wrist center point, the angle information of the flat panel detector collected at the moment when the hand releases the flat panel detector, and the distance between the flat panel detector center point and the wrist center point. Specifically, after the flat panel detector is placed, the visual positioning cannot identify the angle value of the current flat panel detector, that is, the angle information of the flat panel detector collected at the moment when the hand releases the flat panel detector is obtained, including the angle value a2 relative to the x direction and the angle value b2 relative to the y direction. Then, the final placement position information of the flat panel detector center point is calculated based on the current position information (x2, y2) of the wrist center point and the distance r between the flat panel detector center point and the wrist center point. According to the geometric relationship of the placement position, the final placement position information of the flat panel detector is (x2+r*cos a2, y2+r*cos b2).

[0047] In an embodiment, the angle acquisition module comprises one or more gyroscopes.

[0048] Similar to the above-mentioned embodiment principle, the present application provides a flat panel detector positioning method based on human hand posture recognition.

[0049] The following provides specific embodiments in combination with the accompanying drawings:

[0050] As Figure 4 A flowchart of a flat panel detector positioning method based on human hand posture recognition in an embodiment of the present application is shown.

[0051] The method comprises:

[0052] Step S41: Obtain the image information collected by the image acquisition module during the process of placing the flat panel detector behind the measured object, and the angle information of the flat panel detector detected by the angle acquisition module arranged on the flat panel detector in real time.

[0053] In an embodiment, the image acquisition module collects the placement start image information before placing the flat panel detector, and collects the placement end image information at the moment when the hand releases the flat panel detector.

[0054] In an embodiment, when the hand release flat panel detector signal is sent by the hand release judgment sensor module arranged on the flat panel detector when detecting that the hand releases the flat panel detector, the image acquisition module collects the placement end image information at the moment when the hand releases the flat panel detector.

[0055] Step S42: hand posture recognition is performed on the image information, and final placement position information of the flat panel detector is calculated according to the angle information of the flat panel detector collected, so as to calculate the relative position of the flat panel detector and the X-ray source based on the final placement position information.

[0056] In an embodiment, step S42 comprises:

[0057] obtaining the relative position information of the flat panel detector center point and the wrist center point according to the placement start image information collected by the image collection module before the flat panel detector is placed;

[0058] obtaining the final placement position information of the flat panel detector center point based on the relative position information of the flat panel detector center point and the wrist center point, the placement end image information collected by the image collection module when the hand releases the flat panel detector, and the angle information of the flat panel detector collected by the angle collection module when the hand releases the flat panel detector;

[0059] obtaining the relative position information of the flat panel detector and the X-ray source based on the final placement position information of the flat panel detector center point and the position information of the X-ray source.

[0060] In an embodiment, the obtaining the relative position information of the flat panel detector center point and the wrist center point according to the placement start image information collected by the image collection module before the flat panel detector is placed comprises: identifying initial position information of the flat panel detector center point and initial position information of the wrist center point according to the placement start image information; and calculating the relative position information of the flat panel detector center point and the wrist center point based on the initial position information of the flat panel detector center point and the initial position information of the wrist center point; wherein the relative position information comprises a distance between the flat panel detector center point and the wrist center point.

[0061] In an embodiment, the obtaining the final placement position information of the flat panel detector center point based on the relative position information of the flat panel detector center point and the wrist center point, the placement end image information collected by the image collection module when the hand releases the flat panel detector, and the angle information of the flat panel detector collected by the angle collection module when the hand releases the flat panel detector comprises: obtaining current position information of the wrist center point according to the placement end image information; and calculating the final placement position information of the flat panel detector center point based on the current position information of the wrist center point, the angle information of the flat panel detector collected when the hand releases the flat panel detector, and the distance between the flat panel detector center point and the wrist center point.

[0062] In order to better illustrate the above-mentioned flat panel detector positioning method based on human hand posture recognition, the present application provides the following specific embodiments.

[0063] Embodiment 1: a mobile DR application mode of flat panel detector positioning based on human hand posture recognition.

[0064] The mode comprises: an X-ray source finds a part to be aligned through a cursor or the like and places the part in position; a hand holds up a detector and approaches a measured object; the hand holds up the detector and prepares to record an image of the measured object by an image acquisition device to obtain a start; after the detector is placed, a sensor gives a hand release signal to make the image acquisition device record an image at this time; a wrist center point position is calculated through the recorded image, and a detector position is obtained in combination with angle change data collected by an angle detection sensor; and an operation instruction is given according to a relative position of the detector and the X-ray source.

[0065] In the mobile DR application, the embodiment obtains an accurate position of the detector through human hand posture + angle measurement assistance based on visual positioning technology, and facilitates alignment of the X-ray source and the detector.

[0066] As Figure 5 A structure schematic diagram of a flat panel detector positioning terminal 50 based on human hand posture recognition in the embodiment of the present application is shown.

[0067] The flat panel detector positioning terminal 50 based on human hand posture recognition comprises a memory 51 and a processor 52, wherein the memory 51 is used for storing a computer program; and the processor 52 runs the computer program to realize the functions as Figure 4 The flat panel detector positioning method based on human hand posture recognition.

[0068] Optionally, the number of the memory 51 can be one or more, the number of the processor 52 can be one or more, and the memory 51 and the processor 52 can be one or more. Figure 5 In the embodiment, one is taken as an example.

[0069] Optionally, the processor 52 in the flat panel detector positioning terminal 50 based on human hand posture recognition will load one or more instructions corresponding to a process of an application program into the memory 51 according to the steps as Figure 1 and run the application program stored in the first memory 51 by the processor 52, so as to realize various functions in the flat panel detector positioning method based on human hand posture recognition as Figure 4

[0070] ​Optionally, the memory 51 can include, but is not limited to, a high-speed random access memory, a nonvolatile memory, for example, one or more disk storage devices, a flash memory device, or other nonvolatile solid-state storage device; the processor 52 can include, but is not limited to, a central processing unit (CPU), a network processor (NP), etc., and can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic component, a discrete hardware component.

[0071] Optionally, the processor 52 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc., and can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic component, a discrete hardware component.

[0072] The application also provides a computer readable storage medium, which stores a computer program, and the computer program realizes the method as shown in the application when running. Figure 4 The computer readable storage medium can include, but is not limited to, a floppy disk, an optical disk, a CD-ROM (compact disk-read only memory), a magneto-optical disk, a ROM (read only memory), a RAM (random access memory), an EPROM (erasable programmable read only memory), an EEPROM (electrically erasable programmable read only memory), a magnetic card or an optical card, a flash memory, or other types of media / machine readable media suitable for storing machine executable instructions. The computer readable storage medium can be a product not connected to a computer device, or a component connected to a computer device.

[0073] In summary, the flat panel detector positioning system, method and terminal based on human hand posture recognition of the present application, through the image information collected in the process of placing the flat panel detector behind the measured object, the posture of the hand is recognized, and the final placement position information of the flat panel detector is obtained by combining the angle information of the flat panel detector detected in real time, and the relative position of the current flat panel detector and the X-ray source is calculated. The present application recognizes the posture of the hand of the person operating the flat panel detector based on the visual positioning technology, and then uses the measured angle change information as an auxiliary to accurately obtain the relative position between the X-ray source and the flat panel detector. Not only solves the problem that the flat panel detector of the current mobile DR cannot recognize the specific position under the shielding condition and is easy to deviate, but also is convenient to operate and has better shooting effect, reduces the misoperation and shooting times. Therefore, the present application effectively overcomes the various shortcomings in the prior art and has high industrial utilization value.

[0074] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A flat panel detector positioning system based on human hand gesture recognition, characterized by, The system comprises: an image acquisition module, configured to acquire image information in the process of placing a flat panel detector behind an object to be measured; an angle acquisition module, arranged on the flat panel detector, configured to detect angle information of the flat panel detector in real time; a processing module, connected to the image acquisition module and the angle acquisition module, configured to perform hand posture recognition on the image information, and calculate final placement position information of the flat panel detector according to the acquired angle information of the flat panel detector, so as to calculate the relative position between the flat panel detector and an X-ray source based on the final placement position information; wherein the image acquisition module is configured to acquire placement start image information before placing the flat panel detector, and acquire placement end image information when the hand releases the flat panel detector; the processing module comprises: a first relative position calculation unit, configured to acquire relative position information between a center point of the flat panel detector and a center point of a wrist according to the placement start image information; a flat panel detector placement position calculation unit, connected to the first relative position calculation unit, configured to acquire final placement position information of the center point of the flat panel detector based on the relative position information between the center point of the flat panel detector and the center point of the wrist, according to the placement end image information and the angle information of the flat panel detector acquired at the time when the hand releases the flat panel detector; and a second relative position calculation unit, connected to the flat panel detector placement position calculation unit, configured to acquire relative position information between the flat panel detector and the X-ray source based on the final placement position information of the center point of the flat panel detector and position information of the X-ray source; the acquisition of the relative position information between the center point of the flat panel detector and the center point of the wrist according to the placement start image information comprises: recognizing initial position information of the center point of the flat panel detector and initial position information of the center point of the wrist according to the placement start image information; and calculating the relative position information between the center point of the flat panel detector and the center point of the wrist based on the initial position information of the center point of the flat panel detector and the initial position information of the center point of the wrist; wherein the relative position information comprises a distance between the center point of the flat panel detector and the center point of the wrist.

2. The hand gesture recognition based flat panel detector positioning system as claimed in claim 1, wherein, The system further comprises a hand release judgment sensor module, arranged on the flat panel detector, configured to send a hand release flat panel detector signal when detecting that the hand releases the flat panel detector, so that the image acquisition module acquires the placement end image information at the time when the hand releases the flat panel detector.

3. The hand gesture recognition based flat panel detector positioning system as claimed in claim 1, wherein, the acquisition of the final placement position information of the center point of the flat panel detector based on the relative position information between the center point of the flat panel detector and the center point of the wrist, according to the placement end image information and the angle information of the flat panel detector acquired at the time when the hand releases the flat panel detector comprises: acquiring current position information of the center point of the wrist according to the placement end image information; calculating the final placement position information of the center point of the flat panel detector based on the current position information of the center point of the wrist, the angle information of the flat panel detector acquired at the time when the hand releases the flat panel detector, and the distance between the center point of the flat panel detector and the center point of the wrist.

4. The hand gesture recognition based flat panel detector positioning system of claim 1, wherein, The angle acquisition module comprises one or more gyroscopes.

5. A flat panel detector positioning method based on human hand gesture recognition, characterized by, The method comprises: acquiring image information acquired by an image acquisition module during placement of a flat panel detector behind an object to be measured and angle information of the flat panel detector detected by an angle acquisition module arranged on the flat panel detector in real time; performing hand posture recognition on the image information and calculating final placement position information of the flat panel detector according to the acquired angle information of the flat panel detector to calculate the relative position of the current flat panel detector and an X-ray source based on the final placement position information; wherein the image acquisition module acquires placement start image information before placement of the flat panel detector and placement end image information at the moment when the hand releases the flat panel detector; the hand posture recognition on the image information and the calculation of the final placement position information of the flat panel detector according to the acquired angle information of the flat panel detector to calculate the relative position of the current flat panel detector and the X-ray source based on the final placement position information comprises: obtaining relative position information of a center point of the flat panel detector and a center point of a wrist according to placement start image information acquired by the image acquisition module before placement of the flat panel detector; obtaining final placement position information of the center point of the flat panel detector based on the relative position information of the center point of the flat panel detector and the center point of the wrist, the placement end image information acquired by the image acquisition module at the moment when the hand releases the flat panel detector, and the angle information of the flat panel detector acquired by the angle acquisition module at the moment when the hand releases the flat panel detector; and obtaining relative position information of the flat panel detector and the X-ray source based on the final placement position information of the center point of the flat panel detector and position information of the X-ray source; wherein the obtaining of the relative position information of the center point of the flat panel detector and the center point of the wrist according to the placement start image information comprises: recognizing initial position information of the center point of the flat panel detector and initial position information of the center point of the wrist according to the placement start image information; and calculating the relative position information of the center point of the flat panel detector and the center point of the wrist based on the initial position information of the center point of the flat panel detector and the initial position information of the center point of the wrist; wherein the relative position information comprises a distance between the center point of the flat panel detector and the center point of the wrist.

6. A flat panel detector positioning terminal based on human hand gesture recognition, characterized by, comprise: one or more memories and one or more processors; the one or more memories are configured to store a computer program; the one or more processors, connected to the memories, are configured to run the computer program to perform the method of claim 5.

Images