CN114748085B - X-ray exposure method, system and device based on motion recognition - Google Patents
X-ray exposure method, system and device based on motion recognition Download PDFInfo
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Abstract
The invention discloses an X-ray exposure method, a system and a device based on motion recognition, wherein the method comprises the steps of obtaining a first infrared mark point arranged on a mandible, analyzing the motion condition of the mandible according to the first infrared mark point, and determining a first trigger signal; acquiring a muscle electrical signal of a masseter, determining a second trigger signal when the muscle electrical signal exceeds a preset threshold value, and identifying the motion condition of a mandible according to the muscle electrical signal; acquiring a face image, extracting nasal tip coordinate data and mandible coordinate data according to the face image, performing motion analysis according to the extracted coordinate data, and determining a third trigger signal; the embodiment of the invention can improve the precision and the efficiency of X-ray exposure and can be widely applied to the technical field of medical radiation.
Description
Technical Field
The invention relates to the technical field of medical radiation, in particular to an X-ray exposure method, system and device based on motion recognition.
Background
With the wide-range popularization of mobile phones and tablet computers, people are easy to be in a long-time head-lowering state, and therefore cervical spondylosis is caused. In clinical work, taking an X-ray image of the cervical spine is the most common way to check whether cervical lesions are present or absent. When shooting cervical vertebra X-ray images, the mandible of a subject needs to move up and down quickly, the aim is to blur the mandible, the cervical vertebra behind the mandible cannot be shielded, and the head of the subject needs to be kept still. However, in the actual operation process, how to trigger the X-ray exposure when the mandible moves at the fastest speed is a difficult problem for the technician to photograph the cervical vertebrae, which is also the key point for taking a standard cervical vertebrae X-ray image. Therefore, multiple exposure attempts are often required to capture the clinically required X-ray images of the cervical spine, which undoubtedly increases the radiation dose to the patient and reduces the efficiency of the technician photography.
Disclosure of Invention
In view of this, embodiments of the present invention provide a simple and fast X-ray exposure method, system and apparatus based on motion recognition, so as to improve X-ray exposure efficiency.
In one aspect, the present invention provides an X-ray exposure method based on motion recognition, including:
acquiring a first infrared mark point arranged on a mandible, analyzing the motion condition of the mandible according to the first infrared mark point, and determining a first trigger signal;
acquiring a muscle electric signal of a masseter, and determining a second trigger signal when the muscle electric signal exceeds a preset threshold value;
acquiring a face image, extracting nasal tip coordinate data and mandible coordinate data according to the face image, performing motion analysis according to the extracted coordinate data, and determining a third trigger signal;
and controlling an X-ray exposure device to carry out X-ray exposure according to the first trigger signal, the second trigger signal and the third trigger signal.
Optionally, the acquiring a first infrared marker point located on the mandible, analyzing the motion condition of the mandible according to the first infrared marker point, and determining a first trigger signal includes:
in the jaw bone moving process, acquiring an initial three-dimensional coordinate moving data set of a first infrared mark point through an infrared camera;
performing data filtering processing on the initial three-dimensional coordinate motion data set according to a minimum displacement method to determine a target three-dimensional coordinate motion data set;
and calculating the movement speed of the mandible according to the target three-dimensional coordinate movement data set, and generating a first trigger signal when the movement speed reaches the maximum value.
Optionally, the acquiring a first infrared marker point located on the mandible, analyzing the motion condition of the mandible according to the first infrared marker point, and determining a first trigger signal further includes:
and acquiring second infrared mark points and third infrared mark points on cheekbones on two sides by using an infrared camera.
Optionally, the acquiring a muscle electrical signal of the masseter muscle, and when the muscle electrical signal exceeds a preset threshold, determining a second trigger signal includes:
muscle electrical signals are acquired through surface electrodes located on the skin surface of the masseter.
Optionally, the acquiring a face image, extracting nose tip coordinate data and mandible coordinate data according to the face image, performing motion analysis according to the extracted coordinate data, and determining a third trigger signal includes:
acquiring a human face image through an optical camera;
extracting face features of the face image, and determining nose tip coordinate data and mandible coordinate data;
and calculating the mandible movement speed according to the nasal tip coordinate data and the mandible coordinate data, and generating a third trigger signal when the movement speed reaches the maximum value.
On the other hand, the embodiment of the invention also discloses an X-ray exposure system based on motion recognition, which comprises the following components:
the first module is used for acquiring a first infrared mark point arranged on the mandible, analyzing the motion condition of the mandible according to the first infrared mark point and determining a first trigger signal;
the second module is used for acquiring a muscle electric signal of the masseter muscle, and determining a second trigger signal when the muscle electric signal exceeds a preset threshold value;
the third module is used for acquiring a face image, extracting nasal tip coordinate data and mandible coordinate data according to the face image, performing motion analysis according to the extracted coordinate data and determining a third trigger signal;
and the fourth module is used for controlling the X-ray exposure device to carry out X-ray exposure according to the first trigger signal, the second trigger signal and the third trigger signal.
Optionally, the first module comprises:
the first unit is used for acquiring an initial three-dimensional coordinate motion data set of a first infrared mark point through an infrared camera in the mandibular motion process;
the second unit is used for carrying out data filtering processing on the initial three-dimensional coordinate motion data set according to a minimum displacement method and determining a target three-dimensional coordinate motion data set;
and the third unit is used for calculating the movement speed of the mandible according to the target three-dimensional coordinate movement data set, and generating a first trigger signal when the movement speed reaches the maximum value.
Optionally, the third module comprises:
the fourth unit is used for acquiring a face image through the optical camera;
the fifth unit is used for extracting the face features of the face image and determining nose tip coordinate data and mandible coordinate data;
and the sixth unit is used for calculating the mandible movement speed according to the nasal tip coordinate data and the mandible coordinate data, and generating a third trigger signal when the movement speed reaches the maximum value.
On the other hand, the embodiment of the invention also discloses an electronic device, which comprises a processor and a memory;
the memory is used for storing programs;
the processor executes the program to implement the method as described above.
On the other hand, the embodiment of the invention also discloses a computer readable storage medium, wherein the storage medium stores a program, and the program is executed by a processor to realize the method.
In another aspect, an embodiment of the present invention further discloses a computer program product or a computer program, where the computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The computer instructions may be read by a processor of a computer device from a computer-readable storage medium, and the computer instructions executed by the processor cause the computer device to perform the foregoing method.
Compared with the prior art, the technical scheme adopted by the invention has the following technical effects: according to the embodiment of the invention, a first infrared mark point arranged on a mandible is obtained, and a first trigger signal is determined according to the analysis of the motion condition of the mandible by the first infrared mark point; acquiring a muscle electrical signal of a masseter, determining a second trigger signal when the muscle electrical signal exceeds a preset threshold value, and identifying the motion condition of a mandible according to the muscle electrical signal; acquiring a face image, extracting nasal tip coordinate data and mandible coordinate data according to the face image, performing motion analysis according to the extracted coordinate data, and determining a third trigger signal; according to the embodiment of the invention, the jaw bone movement condition can be analyzed through the infrared mark, the muscle electric signal and the image processing technology, so that the X-ray exposure is controlled, and the precision and the efficiency of the X-ray exposure are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a flowchart of an X-ray exposure method based on motion recognition according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Before describing the detailed implementation of the present application, the X-ray exposure process and the problems encountered in the actual scene need to be explained. In clinical work, the X-ray image of cervical vertebra is the most common examination method for understanding whether cervical vertebra lesion is present or not. The subject is usually required to stand in front of the camera stand with the head slightly tilted back and the centerline of the X-ray tube aligned with the inferior border of the mandible for normal incidence. In the shooting process, the mandible of the subject needs to move up and down quickly, so that the aim is to make the mandible blur, the cervical vertebra behind the mandible cannot be shielded, and the head of the subject needs to be kept still. And finally, projecting the atlas joint gap formed by the 1 st and 2 th cervical vertebrae and the 3 rd to 7 th cervical vertebrae in the image by the shot cervical vertebra X-ray image, wherein the cervical vertebra spinous process is positioned in the center of the vertebral body, the transverse processes are bilaterally symmetrical, the intervertebral space and the uncinate process joint are clearly displayed, the trachea is projected in the center of the vertebral body, and the trabecular bone trabecula of each cervical vertebra is clearly displayed. However, in the actual operation process, how to trigger the X-ray exposure when the mandible moves at the fastest speed is a difficult problem for the technician to photograph the cervical vertebra. In view of the above situation, embodiments of the present invention provide a motion recognition-based X-ray exposure method, system, and apparatus, which can accurately recognize a mandible movement and trigger X-ray exposure at an appropriate time point. The success rate of the radiography is improved, the radiation dose received by the patient is reduced, and more accurate imaging data which accord with the clinical diagnosis standard are provided for the diagnosis and treatment of the clinician.
Referring to fig. 1, an embodiment of the present invention provides an X-ray exposure method based on motion recognition, including:
s101, acquiring a first infrared mark point arranged on the mandible, analyzing the motion condition of the mandible according to the first infrared mark point, and determining a first trigger signal;
s102, acquiring a muscle electric signal of a masseter, and determining a second trigger signal when the muscle electric signal exceeds a preset threshold value;
s103, acquiring a face image, extracting nasal tip coordinate data and mandible coordinate data according to the face image, performing motion analysis according to the extracted coordinate data, and determining a third trigger signal;
and S104, controlling an X-ray exposure device to carry out X-ray exposure according to the first trigger signal, the second trigger signal and the third trigger signal.
According to the embodiment of the invention, the first infrared mark point attached to the condyle eminence of the mandible is obtained, so that the movement condition of the mandible can be analyzed by obtaining the first infrared mark point, the movement speed of the mandible is fed back in real time, and the first trigger signal is generated. The implementation also comprises the steps of obtaining a muscle electric signal of the masseter muscle, and generating a second trigger signal when the muscle electric signal exceeds a preset threshold value; since the surface electromyogram is related to sex, age, and degree of facial muscle development, the electromyogram of the masseter measured in a normal person at rest is about 3 to 8 μ V, and the electromyogram of the masseter measured during the mandibular movement is about 20 to 50 μ V. The signal of jaw movement is gathered simultaneously through uniting infrared camera and flesh electricity collection system to this embodiment, acquires first infrared mark point and carries out the analysis to jaw's motion condition when infrared camera, and jaw flesh electricity signal is 30 mu V when jaw moves at the fastest. Therefore, the embodiment of the present invention sets the predetermined threshold to 30 μ V. It is understood that the preset threshold may be adaptively adjusted according to an actual scene or physical conditions of the photographer. The embodiment can also analyze the face image, and analyze the mandible movement condition by extracting the nasal tip coordinate data and the mandible coordinate data in the face image, thereby feeding back the movement speed of the mandible in real time and generating a third trigger signal. And when the X-ray exposure device simultaneously receives the first trigger signal, the second trigger signal and the third trigger signal, carrying out X-ray exposure processing.
Further as a preferred embodiment, in the step S101, the acquiring a first infrared marker point arranged on the mandible, analyzing the movement of the mandible according to the first infrared marker point, and determining a first trigger signal includes:
in the mandibular movement process, acquiring an initial three-dimensional coordinate movement data set of a first infrared mark point through an infrared camera;
performing data filtering processing on the initial three-dimensional coordinate motion data set according to a minimum displacement method to determine a target three-dimensional coordinate motion data set;
and calculating the movement speed of the mandible according to the target three-dimensional coordinate movement data set, and generating a first trigger signal when the movement speed reaches the maximum value.
According to one embodiment of the invention, a first infrared mark point is pasted on the mandible mental eminence of a photographer, and the OptiTrack infrared camera frame is arranged beside the body of the photographer of an X-ray image. In the embodiment, a three-dimensional space is formed by using 3 infrared cameras, and the coordinate signals of the infrared mark points are collected in real time. The infrared mark point is a small sphere coated with a reflective material on the surface, and is used as an infrared reflection point which moves along with the lower jaw to reflect the motion track of the lower jaw, and the infrared emitter and the collector are both infrared cameras. It is understood that the infrared mark points in the present invention include objects capable of serving as infrared reflection points, and not only include the small round balls in the present embodiment. In the embodiment of the invention, in the mandibular movement process, an initial three-dimensional coordinate movement data set of the first infrared marker point is acquired by the infrared camera, wherein the initial three-dimensional coordinate movement data set comprises a plurality of three-dimensional coordinate movement data generated by the first infrared marker point in the movement process. In this embodiment, data filtering processing is further performed on the initial three-dimensional coordinate motion data set according to a minimum displacement method, so as to obtain a target three-dimensional coordinate motion data set. The minimum displacement method is used for determining the position of a mark point of the next frame in the three-dimensional coordinate motion data set and filtering out possible interference points. The embodiment of the invention sequences the data of the plurality of mark points by a minimum displacement method, obtains the time difference and the coordinate value difference of every two adjacent infrared mark points by shooting through the infrared camera, calculates the motion speed of the mandible, and generates a first trigger signal when the motion speed is maximum, namely the acceleration is zero. Therefore, the embodiment of the invention can acquire the target three-dimensional coordinate motion data set of the infrared mark point through the infrared camera, and calculate the speed and the acceleration of the mandible motion in real time. When the movement speed is maximum, namely the acceleration is zero, a first trigger signal is generated.
Further as a preferred embodiment, the acquiring a first infrared marker point located on the mandible, analyzing the movement of the mandible according to the first infrared marker point, and determining a first trigger signal further includes:
and acquiring second infrared mark points and third infrared mark points on cheekbones on two sides by using the infrared camera.
In another embodiment of the invention, the second infrared mark point and the third infrared mark point can be arranged on cheekbones on two sides of the photographer, the second infrared mark point and the third infrared mark point are the same as the first infrared mark point in shape and size, and the same materials are used. And the horizontal coordinates of the two infrared mark points attached to the cheekbones on the two sides can judge whether the head of the photographer deflects in the mandibular movement process in real time. If the deviation occurs, the quality of the shot image can be influenced, if the joint clearance formed by the atlas and the pivot cone changes, the asymmetry appears, and a clinician can easily misdiagnose the atlantoaxial dislocation. Therefore, in the embodiment of the invention, the second infrared mark point and the third infrared mark point positioned on the cheekbones on two sides can be added to the photographer, so that whether the head is shifted or not can be judged, and if the head is shifted, the photographer can shoot again.
Further as a preferred embodiment, in the step S102, the acquiring a muscle electrical signal of the masseter muscle, and when the muscle electrical signal exceeds a preset threshold, determining a second trigger signal includes:
muscle electrical signals are acquired through surface electrodes located on the skin surface of the masseter.
In the embodiment, the surface electrode is placed on the skin surface of the masseter muscle, so that the muscle electric signal of the masseter muscle is acquired. In the embodiment of the invention, the contact position of the electrodes can be wiped by using an alcohol cotton ball, the resistance is reduced, the conductivity between the surface electrodes and the skin is increased, the middle of the masseter muscle is selected as the electrode placement position, and the distance between the two surface electrodes is 2cm, so that the system precision can be improved, and the error can be reduced. In addition, the present embodiment can also adopt the differential structure, improve the input impedance of the preamplifier, adopt the active electrode, design the pass band to be 20 to 500Hz and so on measures, thereby reducing the inherent electronic noise from the electronic components in the instrument, the influence of the noise of the surrounding environment (the radio, the power line, the fluorescent lamp and so on can all become the interference source), reducing the signal distortion of the system and improving the signal-to-noise ratio.
Further as a preferred embodiment, in step S103, the obtaining a face image, extracting nose tip coordinate data and mandible coordinate data according to the face image, performing motion analysis according to the extracted coordinate data, and determining a third trigger signal includes:
acquiring a human face image through an optical camera;
extracting face features of the face image, and determining nose tip coordinate data and mandible coordinate data;
and calculating the mandible movement speed according to the nasal tip coordinate data and the mandible coordinate data, and generating a third trigger signal when the movement speed reaches the maximum value.
The embodiment of the invention detects and positions the face of a photographer in real time through the optical camera to determine whether the face exists in the shooting range, the position of the face and the like. In this embodiment, mtcch (Multi-task Cascaded connected Networks) algorithm is used to implement face detection and alignment, and 3 CNN Cascaded algorithm structures are used to perform face detection and face feature point detection simultaneously. It can be understood that the present invention can also adopt other image processing algorithms to detect the human image, and recognize the mandible movement by face detection, and calculate the mandible movement speed, and the technical scheme of performing X-ray exposure according to the maximum value of the movement speed still belongs to the protection scope of the present invention. The embodiment of the invention obtains the coordinate data of the face frame and five characteristic points through an MTCCN algorithm, wherein the five characteristic points are canthus, nose tip and two corners of mouth. In the embodiment, the lower left corner of the face image is used as the origin of coordinates, the bottom line of the face frame is used as the longitudinal axis coordinates of the mandible, the middle point of the horizontal coordinates of the two mouth corners is used as the horizontal coordinates of the mandible, and finally the nasal tip coordinate data and the mandible coordinate data are obtained. And measuring the distance between the nasal tip coordinate data and the mandible coordinate data. And calculating the speed and the acceleration of the mandible movement in real time according to the shooting interval of each frame of face image, and generating a third trigger signal when the movement speed is maximum, namely the acceleration is zero.
On the other hand, the embodiment of the invention also discloses an X-ray exposure system based on motion recognition, which comprises the following components:
the first module is used for acquiring a first infrared mark point arranged on the mandible, analyzing the motion condition of the mandible according to the first infrared mark point and determining a first trigger signal;
the second module is used for acquiring a muscle electric signal of the masseter muscle, and determining a second trigger signal when the muscle electric signal exceeds a preset threshold value;
the third module is used for acquiring a face image, extracting nasal tip coordinate data and mandible coordinate data according to the face image, performing motion analysis according to the extracted coordinate data and determining a third trigger signal;
and the fourth module is used for controlling the X-ray exposure device to carry out X-ray exposure according to the first trigger signal, the second trigger signal and the third trigger signal.
Further as a preferred embodiment, the first module comprises:
the first unit is used for acquiring an initial three-dimensional coordinate motion data set of a first infrared mark point through an infrared camera in the mandibular motion process;
the second unit is used for carrying out data filtering processing on the initial three-dimensional coordinate motion data set according to a minimum displacement method and determining a target three-dimensional coordinate motion data set;
and the third unit is used for calculating the movement speed of the mandible according to the target three-dimensional coordinate movement data set, and generating a first trigger signal when the movement speed reaches the maximum value.
Further as a preferred embodiment, the third module includes:
the fourth unit is used for acquiring a face image through the optical camera;
the fifth unit is used for extracting the face features of the face image and determining nose tip coordinate data and mandible coordinate data;
and the sixth unit is used for calculating the mandible movement speed according to the nasal tip coordinate data and the mandible coordinate data, and generating a third trigger signal when the movement speed reaches the maximum value.
Corresponding to the method of fig. 1, an embodiment of the present invention further provides an electronic device, including a processor and a memory; the memory is used for storing programs; the processor executes the program to implement the method as described above.
Corresponding to the method of fig. 1, the embodiment of the present invention further provides a computer-readable storage medium, which stores a program, and the program is executed by a processor to implement the method as described above.
Embodiments of the present invention also disclose a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The computer instructions may be read by a processor of a computer device from a computer-readable storage medium, and executed by the processor to cause the computer device to perform the method illustrated in fig. 1.
In summary, the embodiments of the present invention have the following advantages: according to the embodiment of the invention, the jaw bone movement can be simultaneously identified through the infrared mark points, the muscle electric signals and the face image detection, so that the exposure system is triggered, the image of the jaw bone moving at the fastest speed can be effectively obtained, and the extra radiation dose brought by repeated shooting is reduced.
In alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flow charts of the present invention are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed, and in which sub-operations described as part of larger operations are performed independently.
Furthermore, although the present invention is described in the context of functional modules, it should be understood that, unless otherwise indicated to the contrary, one or more of the described functions and/or features may be integrated in a single physical device and/or software module, or one or more functions and/or features may be implemented in separate physical devices or software modules. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary for an understanding of the present invention. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be understood within the ordinary skill of an engineer, given the nature, function, and internal relationship of the modules. Accordingly, those skilled in the art can, using ordinary skill, practice the invention as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative of and not intended to limit the scope of the invention, which is defined by the appended claims and their full scope of equivalents.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and various media capable of storing program codes.
The logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Further, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following technologies, which are well known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. An X-ray exposure method based on motion recognition is characterized by comprising the following steps:
acquiring a first infrared mark point arranged on the mandible, analyzing the motion condition of the mandible according to the first infrared mark point, and determining a first trigger signal;
acquiring a muscle electrical signal of a masseter, and determining a second trigger signal when the muscle electrical signal exceeds a preset threshold;
acquiring a face image, extracting nasal tip coordinate data and mandible coordinate data according to the face image, performing motion analysis according to the extracted coordinate data, and determining a third trigger signal;
controlling an X-ray exposure device to carry out X-ray exposure according to the first trigger signal, the second trigger signal and the third trigger signal;
the method comprises the steps of acquiring a first infrared mark point arranged on a mandible, analyzing the motion condition of the mandible according to the first infrared mark point, and determining a first trigger signal, wherein the method comprises the following steps:
in the mandibular movement process, acquiring an initial three-dimensional coordinate movement data set of a first infrared mark point through an infrared camera;
performing data filtering processing on the initial three-dimensional coordinate motion data set according to a minimum displacement method to determine a target three-dimensional coordinate motion data set;
calculating the movement speed of the mandible according to the target three-dimensional coordinate movement data set, and generating a first trigger signal when the movement speed reaches the maximum value;
the acquiring of the face image, extracting nasal tip coordinate data and mandible coordinate data according to the face image, performing motion analysis according to the extracted coordinate data, and determining a third trigger signal includes:
acquiring a human face image through an optical camera;
extracting face features of the face image, and determining nose tip coordinate data and mandible coordinate data;
and calculating the mandible movement speed according to the nasal tip coordinate data and the mandible coordinate data, and generating a third trigger signal when the movement speed reaches the maximum value.
2. The X-ray exposure method based on motion recognition of claim 1, wherein the obtaining of the first infrared marker point located on the mandible, analyzing the motion of the mandible according to the first infrared marker point, and determining the first trigger signal further comprises:
and acquiring second infrared mark points and third infrared mark points on cheekbones on two sides by using an infrared camera.
3. The X-ray exposure method based on motion recognition is characterized in that the acquiring of the muscle electrical signal of the masseter muscle and the determining of the second trigger signal when the muscle electrical signal exceeds a preset threshold value comprise:
muscle electrical signals are acquired through surface electrodes located on the skin surface of the masseter.
4. An X-ray exposure system based on motion recognition, comprising:
the first module is used for acquiring a first infrared mark point arranged on the mandible, analyzing the motion condition of the mandible according to the first infrared mark point and determining a first trigger signal;
the second module is used for acquiring a muscle electric signal of the masseter muscle, and determining a second trigger signal when the muscle electric signal exceeds a preset threshold value;
the third module is used for acquiring a face image, extracting nasal tip coordinate data and mandible coordinate data according to the face image, performing motion analysis according to the extracted coordinate data and determining a third trigger signal;
the fourth module is used for controlling the X-ray exposure device to carry out X-ray exposure according to the first trigger signal, the second trigger signal and the third trigger signal;
the first module comprises:
the first unit is used for acquiring an initial three-dimensional coordinate motion data set of a first infrared mark point through an infrared camera in the mandibular motion process;
the second unit is used for carrying out data filtering processing on the initial three-dimensional coordinate motion data set according to a minimum displacement method and determining a target three-dimensional coordinate motion data set;
the third unit is used for calculating the movement speed of the mandible according to the target three-dimensional coordinate movement data set, and generating a first trigger signal when the movement speed reaches the maximum value;
the third module includes:
the fourth unit is used for acquiring a face image through the optical camera;
the fifth unit is used for extracting the face features of the face image and determining nose tip coordinate data and mandible coordinate data;
and the sixth unit is used for calculating the mandible movement speed according to the nasal tip coordinate data and the mandible coordinate data, and generating a third trigger signal when the movement speed reaches the maximum value.
5. An electronic device comprising a processor and a memory;
the memory is used for storing programs;
the processor executing the program realizes the method according to any one of claims 1-3.
6. A computer-readable storage medium, characterized in that the storage medium stores a program, which is executed by a processor to implement the method according to any one of claims 1-3.
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| US5425065A (en) * | 1991-08-19 | 1995-06-13 | Instrumentarium Corp.- Imaging Division | Automatic exposure apparatus for panoramic x-ray equipment |
| US7965814B2 (en) * | 2005-03-01 | 2011-06-21 | Yue Ma | X-ray device |
| EP2130491B1 (en) * | 2008-06-06 | 2015-08-05 | Cefla S.C. | Method and apparatus for radiographic imaging |
| US20170000430A1 (en) * | 2015-06-30 | 2017-01-05 | Carestream Health, Inc. | Methods and apparatus for jaw motion analysis |
| CN106175780A (en) * | 2016-07-13 | 2016-12-07 | 天远三维（天津）科技有限公司 | Facial muscle motion-captured analysis system and the method for analysis thereof |
| US10445886B2 (en) * | 2017-05-30 | 2019-10-15 | General Electric Company | Motion-gated medical imaging |
| CN109124673B (en) * | 2018-06-25 | 2022-03-04 | 南方医科大学南方医院 | X-ray auxiliary photographing method, system and device based on infrared camera |
| CN109730704B (en) * | 2018-12-29 | 2022-11-01 | 上海联影智能医疗科技有限公司 | Method and system for controlling exposure of medical diagnosis and treatment equipment |
| CN111772653B (en) * | 2020-07-17 | 2023-07-25 | 南方医科大学南方医院 | Identification exposure method, system, device and medium for barium swallowing |
| CN112190271A (en) * | 2020-09-15 | 2021-01-08 | 浙江大学 | Intelligent exposure control system and method |
| CN112450955A (en) * | 2020-11-27 | 2021-03-09 | 上海优医基医疗影像设备有限公司 | CT imaging automatic dose adjusting method, CT imaging method and system |
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