CN110301934B - System and method for adjusting light field area of part to be shot based on key point detection - Google Patents
System and method for adjusting light field area of part to be shot based on key point detection Download PDFInfo
- Publication number
- CN110301934B CN110301934B CN201910748559.5A CN201910748559A CN110301934B CN 110301934 B CN110301934 B CN 110301934B CN 201910748559 A CN201910748559 A CN 201910748559A CN 110301934 B CN110301934 B CN 110301934B
- Authority
- CN
- China
- Prior art keywords
- information
- light field
- ideal
- current
- human body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/06—Diaphragms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/46—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with special arrangements for interfacing with the operator or the patient
- A61B6/461—Displaying means of special interest
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/46—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with special arrangements for interfacing with the operator or the patient
- A61B6/467—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with special arrangements for interfacing with the operator or the patient characterised by special input means
- A61B6/469—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with special arrangements for interfacing with the operator or the patient characterised by special input means for selecting a region of interest [ROI]
Abstract
The invention belongs to the technical field of X-ray application, and discloses a system and a method for adjusting a light field area of a part to be shot based on key point detection. The system comprises an X-ray source end, an X-ray variable beam limiter and a shooting area operation module; the X-ray variable beam limiter is internally provided with a visible light source end, a laser source end and an image shooting device. The method comprises the following steps: obtaining ideal light field area information according to the information of the part to be detected, the positioning information and the human body key point information in the initial natural light image, comparing the laser key point information of the laser pattern in the verification natural light image with the ideal light field area information to judge whether the difference value between the two is smaller than a threshold value, if so, obtaining an X-ray image of the human body to be shot currently, and if not, readjusting the projection area of the laser pattern. The invention reduces the deviation of manual judgment, has better imaging result and avoids the excessive radiation to the human body.
Description
Technical Field
The invention belongs to the technical field of X-ray application, and particularly relates to a system and a method for adjusting a light field area of a part to be shot based on key point detection.
Background
In X-ray imaging, it is necessary to reduce the irradiation range of X-rays as much as possible while satisfying radiograph interpretation, so as to reduce the radiation to the human body. At present, the determination of the central point position and the size of the part to be detected of the patient is completely judged by the naked eye of an X-ray technician, and the X-ray technician has subjective deviation when judging the central position of the part to be detected of the patient, so that the working difficulty and the working load of the X-ray technician are increased.
Among them, the medical diagnostic X-ray variable beam limiter is a very important component in an X-ray imaging system, and is used for controlling the irradiation range of X-rays emitted from a radiation source end. At present, two types of X-ray variable beam limiters are used for X-ray imaging, one is a manual X-ray variable beam limiter, the adjustment of the light field of the X-ray variable beam limiter completely depends on an X-ray technician, and the other is an automatic X-ray variable beam limiter. However, the conventional X-ray irradiation range adjustment method has the following disadvantages:
a. for the manual X-ray variable beam limiter, the size information needing to be adjusted completely comes from an X-ray technician, and an inexperienced X-ray technician cannot accurately judge the position and the size of a light field needing to be adjusted, so that the film formation cannot meet the film reading requirement or unnecessary radiation is caused to a human body;
b. for the automatic X-ray variable beam limiter, the light field size information required to be adjusted comes from a system preset value determined according to the part to be detected, and for patients with different statures, the preset value is not an optimal value and cannot be well adapted to the patients with different statures, so that the slicing effect is poor, and even repeated imaging is required for many times.
In view of the above, there is a need for an X-ray imaging method that can solve the problems of the X-ray technician being relied on for the imaging adjustment and unnecessary radiation to the human body.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention aims to provide a system and a method for adjusting the light field area of a to-be-photographed portion based on key point detection.
The technical scheme adopted by the invention is as follows:
a key point detection-based light field area adjusting system for a part to be shot comprises an X-ray source end, an X-ray variable beam limiter used for controlling the irradiation range of X-rays, and a shooting area operation module used for calculating key points of a human body and used for obtaining and comparing an ideal light field area.
A visible light source end, a laser source end and an image shooting device are arranged in the X-ray variable beam limiter; the light field regions of the visible light source end, the laser source end and the X-ray source end are consistent; the laser source end is used for projecting a preset laser pattern on a human body to be shot; the visible light source end is used for projecting a light field area of the X-ray source end on a human body to be shot; the image shooting device is used for shooting natural light images.
Preferably, the system for adjusting the light field area of the part to be photographed based on the key point detection further comprises a display end; the display end is used for displaying the actual light field range corresponding to the visible light source end and/or the laser source end and is also used for displaying the ideal light field area obtained by the shooting area operation module.
Preferably, the system for adjusting the light field area of the part to be photographed based on the key point detection further comprises an X-ray light field adjusting module; a lead plate is arranged at an opening of the X-ray variable beam limiter; the X-ray light field adjusting module is used for adjusting the position of the lead plate; the lead plate is used for adjusting the light field area of the visible light source end, the laser source end and the X-ray source end on the human body to be shot.
An X-ray imaging method based on the key point detection-based light field region adjusting system of a part to be shot comprises the following steps:
acquiring information of a part to be detected and positioning information of a current human body to be shot;
projecting a preset laser pattern to a current human body to be shot, acquiring an initial natural light image of the current human body to be shot, and then obtaining human body key point information in the current initial natural light image;
obtaining ideal light field region information of the current part to be detected according to the current part information to be detected, the positioning information and the human body key point information, wherein the ideal light field region information comprises ideal central point information and ideal size information;
adjusting the projection area of the laser pattern according to the ideal light field area information, then acquiring a verification natural light image containing the currently adjusted laser pattern, and obtaining laser key point information of the laser pattern in the currently verified natural light image;
determining verification light field region information corresponding to a laser pattern in a current verification natural light image according to the current laser key point information, wherein the verification light field region information comprises verification center point information and verification size information;
and judging whether the difference value between the current checking optical field area information and the ideal optical field area is smaller than a threshold value, if so, acquiring the X-ray image of the human body to be shot currently, and if not, readjusting the projection area of the laser pattern.
Preferably, the human body key point information includes part key point information and joint key point information.
Preferably, when obtaining the information of the ideal light field region of the current part to be detected, the specific steps are as follows:
obtaining ideal central point information of the current part to be detected according to the current information of the part to be detected, the positioning information and the human key point information;
and calculating to obtain ideal size information of the current part to be detected according to the current human body key point information and the reference human body key point information, wherein the ideal size information comprises length information and width information.
Preferably, when judging whether the difference between the current verification optical field area information and the ideal optical field area is smaller than the threshold, the specific steps are as follows:
judging whether the difference value between the checking center point information in the current checking optical field area information and the ideal center point information in the current ideal optical field area information is smaller than a threshold value or not;
if not, readjusting the projection area of the laser pattern;
if so, continuously judging whether the difference value between the checking size information in the current checking optical field area information and the ideal size information in the current ideal optical field area information is smaller than a threshold value, if so, acquiring the X-ray image of the human body to be shot currently, and if not, readjusting the projection area of the laser pattern.
Preferably, after obtaining the ideal light field region information of the current part to be detected, the ideal light field region information and the verification natural light image containing the laser pattern are output to the display end.
The invention has the beneficial effects that:
1) The detection of key points of a human body is realized through a visible light source end, a laser source end, an image shooting device and the like, and the central position of a part to be detected, the size of the part to be detected, the central position and the size of an X-ray variable beam limiter light field area and the like can be realized by combining initial information such as information of the part to be detected and positioning information and the like, so that the deviation of manual judgment is reduced, the influence of errors caused by subjective deviation on the adjustment of the X-ray variable beam limiter light field is avoided, the imaging result is better, and the problem that the human body is excessively radiated due to the improper X-ray variable beam limiter light field is avoided;
2) The visualization of ideal light field information and the light field information of the current X-ray variable beam limiter is realized, an X-ray technician can conveniently adjust the position and the opening size of the X-ray variable beam limiter, the practicability is high, and the problem that the position and the light field size of the X-ray variable beam limiter cannot be reasonably adjusted is solved;
3) Because the light field range of the X-ray variable beam limiter is more accurate and reasonable, the areas effective for diagnosis in the generated X-ray image can be well presented, the X-ray imaging quality is higher, the subsequent diagnosis is further facilitated, and the X-ray variable beam limiter is suitable for popularization and use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a block flow diagram of a method for adjusting an optical field area of a portion to be photographed based on keypoint detection in embodiment 4.
Fig. 2 is a cross-shaped laser pattern in example 4.
Fig. 3 is a schematic diagram of human key points in example 5.
Fig. 4 is a schematic diagram of an example in embodiment 6.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Functional details disclosed herein are merely illustrative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
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 of example embodiments of the invention. When the terms "comprises," "comprising," "includes," and/or "including" are used herein, they specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.
It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
It should be understood that specific details are provided in the following description to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.
Example 1:
the embodiment provides a key point detection-based light field region adjusting system for a part to be shot, which comprises an X-ray source end, an X-ray variable beam limiter for controlling the irradiation range of X-rays, and a shooting region operation module for calculating key points of a human body and obtaining and comparing an ideal light field region; the light field is an area where X-rays irradiate the human body, and in this embodiment, the light field is rectangular.
A visible light source end, a laser source end and an image shooting device are arranged in the X-ray variable beam limiter; the light field areas of the visible light source end, the laser source end and the X-ray source end are consistent; the laser source end is used for projecting a preset laser pattern on a human body to be shot; the visible light source end is used for projecting a light field area of the X-ray source end on a human body to be shot; the image shooting device is used for shooting natural light images.
Example 2
The present embodiment is a further improvement on embodiment 1, and the difference between the present embodiment and embodiment 1 is:
in this embodiment, the system for adjusting the light field area of the to-be-photographed part based on the key point detection further includes a display end; the display end is used for displaying the actual light field range corresponding to the visible light source end and/or the laser source end and is also used for displaying the ideal light field area obtained by the shooting area operation module.
Example 3
The present embodiment is a further improvement on the basis of any one of the embodiments 1 and 2, and the difference between the present embodiment and any one of the embodiments 1 and 2 is that:
in this embodiment, the system for adjusting the light field area of the to-be-photographed portion based on the key point detection further includes an X-ray light field adjusting module; a lead plate is arranged at an opening of the X-ray variable beam limiter; the X-ray light field adjusting module is used for adjusting the position of the lead plate; the lead plate is used for adjusting the light field area of the visible light source end, the laser source end and the X-ray source end on the human body to be shot.
Example 4
The embodiment provides a method for adjusting the light field area of a part to be shot based on key point detection on the basis of embodiments 1 to 3, and the method comprises the following steps:
acquiring information of a part to be detected and positioning information of a current human body to be shot;
projecting a preset laser pattern to a current human body to be shot, acquiring an initial natural light image of the current human body to be shot, and then obtaining human body key point information in the current initial natural light image; the predetermined laser pattern may have any shape, such as a cross shape as shown in fig. 2.
Obtaining ideal light field region information of the current part to be detected according to the current part information to be detected, the positioning information and the human body key point information, wherein the ideal light field region information comprises ideal central point information and ideal size information;
adjusting the projection area of the laser pattern according to the ideal light field area information, then acquiring a verification natural light image containing the currently adjusted laser pattern, and obtaining laser key point information of the laser pattern in the currently verified natural light image; the laser key point information is preset information, and as shown in fig. 2, when the laser pattern is a cross, the numbers 1-5 in the figure are the laser key points.
Determining verification light field region information corresponding to a laser pattern in a current verification natural light image according to the current laser key point information, wherein the verification light field region information comprises verification center point information and verification size information;
and judging whether the difference value between the current checking optical field area information and the ideal optical field area is smaller than a threshold value, if so, acquiring the X-ray image of the human body to be shot currently, and if not, readjusting the projection area of the laser pattern.
Example 5
The present embodiment is a further improvement on the basis of embodiment 4, and the difference between the present embodiment and embodiment 4 is:
in this embodiment, the human body key point information includes part key point information and joint key point information; wherein, the human body key point information is obtained by a key point detection algorithm. It should be noted that each key point of the human body has a definite corresponding relationship with the corresponding joint or part of the human body; the key points of the human body may include, but are not limited to, head, neck, left and right shoulder joints, left and right elbow joints, left and right wrist joints, left and right hip joints, left and right knee joints, left and right ankle joints, five sense organs, and various joints of fingers, etc., for example, as shown in fig. 3, the key points of the human body are at 14 positions; numerals 1 to 14 in fig. 3 are head, neck, left and right shoulder joints, left and right elbow joints, left and right wrist joints, left and right hip joints, left and right knee joints, and left and right ankle joints, and the above 14 joints are the most common key points of the human body in the current X-ray imaging.
In one preferred embodiment, the body part (such as the chest and lumbar vertebrae) of the Human body is photographed by using a High-Resolution network model HRNet (Deep High-Resolution reproduction Learning for Human dose Estimation).
In another preferred embodiment, the imaging of the Hand (finger, wrist, etc.) of the human body is realized by a 2D/3D gesture key point algorithm (Hand Keypoint Detection in Single Images using Multiview boosting).
As another preferred embodiment, when the HRNet algorithm is adopted, the algorithm structure is modified so that the HRNet algorithm outputs a natural light image including both the key points of the human body and the key points of the laser pattern.
Example 6
The present embodiment is a further improvement on the basis of embodiment 4 or 5, and the present embodiment is different from embodiment 4 or 5 in that:
in this embodiment, when obtaining the information of the ideal light field region of the current part to be detected, the specific steps are as follows:
obtaining ideal central point information of the current part to be detected according to the current information of the part to be detected, the positioning information and the human key point information;
and calculating to obtain ideal size information of the current part to be detected according to the current human body key point information and the reference human body key point information, wherein the ideal size information comprises length information and width information.
For example, as shown in fig. 4, the information of the part to be detected of the current human body to be photographed is a thoracic vertebra, the positioning information is a normal position, the PQRS four points form a laser pattern, the gray area formed by the HIJK four points is an ideal light field area, the numbers 3 and a point a are key points of a left shoulder joint of the human body, the numbers 4 and B are key points of a right shoulder joint of the human body, the numbers 9 and C are key points of a left hip joint of the human body, the numbers 10 and D are key points of a right hip joint of the human body, and the point O is an ideal center point of the thoracic vertebra.
According to anatomical knowledge, the ideal central point of the thoracic vertebra is approximately positioned at 1/4 of the connecting line of the midpoints of the left shoulder joint and the right shoulder joint and the left hip joint and the right hip joint, and then after the position information of the human body key points A, B, C and D in the initial natural light image is identified by using a key point detection algorithm, the positions of the midpoint E of the line segment AB and the midpoint F of the line segment CD in the initial natural light image are calculated, so that the point O on the line segment EF and the point O on the line segment EF can be obtained
The ideal size information includes an ideal light field length and an ideal light field width.
The width of the ideal light field is determined by the width of the part to be detected; taking the above-mentioned thoracic region and fig. 4 as an example, the ideal field width | HI | should be the same as the length of the thoracic region or slightly larger than the length of the thoracic region to ensure that the X-rays can be radiated to the entire thoracic region. The length of the thoracic vertebrae is about 2/5 of the length of the vertebrae according to anatomical knowledge. Therefore, after the human body key point detection algorithm is used for finding the position of the point A, B, C, D shown in fig. 4, the midpoint E of the line segment AB and the midpoint F of the line segment CD are calculated, the pixel distance of the line segment EF is measured, and the spine length of the human body in the initial natural light image can be obtained; therefore, the width of the lead plate at the opening of the X-ray variable beam limiter is such that the width | RS | of the projection pattern of the laser source end on the human body satisfies:
and | RS | is the ideal light field width.
The ideal field length is determined by the length of the site to be detected. Taking the above-mentioned thoracic vertebra region and fig. 4 as an example, the ideal light field length IJ should be the same as or slightly larger than the width of the thoracic vertebra, so as to ensure that the X-ray image can be radiated to the whole thoracic vertebra region. According to anatomical knowledge, the width of the thoracic vertebrae is about 1/3 of the shoulder width. Therefore, after the positions of points a and B shown in fig. 4 are detected using the human body keypoint algorithm, the ideal light field length | IJ | satisfies:
therefore, the ideal central point information and the ideal size information of the region of the part to be detected can be obtained by calculation according to the information of the part to be detected, the positioning information and the key point information of the human body detected by the key point detection algorithm; the size and the position of the light field area controlled by the X-ray variable beam limiter are consistent with ideal size information and ideal position information; the size and position of the light field controlled by the X-ray variable beam limiter are indicated by the laser pattern and can also be calculated from key points of the laser pattern. For different parts and body positions, the center of the part to be detected, the shooting area and the ideal light field area information to be controlled by the X-ray variable beam limiter can be obtained only by properly changing the calculation mode according to the human anatomy knowledge.
Example 7
The present embodiment is a further improvement made on the basis of any one of embodiments 4 to 6, and the present embodiment is different from any one of embodiments 4 to 6 in that:
in this embodiment, when determining whether the difference between the current verification optical field area information and the ideal optical field area is smaller than the threshold, the specific steps are as follows:
judging whether the difference value between the checking center point information in the current checking optical field area information and the ideal center point information in the current ideal optical field area information is smaller than a threshold value or not;
if not, readjusting the projection area of the laser pattern;
if so, continuously judging whether the difference value between the checking size information in the current checking optical field area information and the ideal size information in the current ideal optical field area information is smaller than a threshold value, if so, acquiring the X-ray image of the human body to be shot currently, and if not, readjusting the projection area of the laser pattern.
For example, as shown in fig. 4, if the point O does not coincide with the intersection point in the laser pattern, it indicates that the current position of the human body is not appropriate, and the positions of the X-ray variable beam limiter in the vertical direction and the horizontal direction need to be adjusted, thereby achieving the purpose of adjusting the projection area of the laser pattern.
Example 8
The present embodiment is a further improvement made on the basis of any one of embodiments 4 to 7, and the present embodiment is different from any one of embodiments 4 to 7 in that:
in this embodiment, after obtaining the ideal light field region information of the current part to be detected, the ideal light field region information and the verification natural light image including the laser pattern are output to the display terminal.
After ideal light field region information is obtained through calculation according to the key points of the human body, the ideal light field region information can be displayed on a display end (such as a gray region in fig. 4); meanwhile, by combining the detected key points of the laser pattern (such as the upper, lower, left, right end points and the central point of the laser pattern in fig. 2 and 4), an X-ray technician can conveniently and quickly judge whether the position and the size of the optical field area to be verified of the X-ray variable beam limiter and the position to be detected of the human body are matched.
The embodiments described above are merely illustrative, and may or may not be physically separate, if referring to units illustrated as separate components; if reference is made to a component displayed as a unit, it may or may not be a physical unit, and may be located in one place or distributed over a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for some of the features described therein. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
The present invention is not limited to the above alternative embodiments, and other various forms of products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the claims, and which the description is intended to be interpreted accordingly.
Claims (8)
1. The utility model provides a treat that shoot regional governing system of position light field based on key point detects which characterized in that: the system comprises an X-ray source end, an X-ray variable beam limiter for controlling the irradiation range of X-rays, and a shooting area operation module for calculating key points of a human body and obtaining and comparing ideal light field areas;
a visible light source end, a laser source end and an image shooting device are arranged in the X-ray variable beam limiter; the light field areas of the visible light source end, the laser source end and the X-ray source end are consistent; the laser source end is used for projecting a preset laser pattern on a human body to be shot; the visible light source end is used for projecting a light field area of the X-ray source end on a human body to be shot; the image shooting device is used for acquiring an initial natural light image of a human body to be shot at present;
when the shooting area operation module is used for calculating key points of a human body and obtaining and comparing an ideal light field area, the specific working process is as follows:
acquiring information of a part to be detected and positioning information of a current human body to be shot; projecting a preset laser pattern to a human body to be shot at present;
then obtaining human body key point information in the current initial natural light image, wherein the human body key point information comprises part key point information and joint key point information;
obtaining ideal light field region information of the current part to be detected according to the current part information to be detected, the positioning information and the human body key point information, wherein the ideal light field region information comprises ideal central point information and ideal size information;
adjusting the projection area of the laser pattern according to the ideal light field area information, then acquiring a verification natural light image containing the currently adjusted laser pattern, and obtaining laser key point information of the laser pattern in the currently verified natural light image;
determining verification light field region information corresponding to a laser pattern in a current verification natural light image according to the current laser key point information, wherein the verification light field region information comprises verification center point information and verification size information;
judging whether the difference value between the current checking optical field area information and the ideal optical field area is smaller than a threshold value, if so, acquiring an X-ray image of the human body to be shot currently, and if not, readjusting the projection area of the laser pattern;
when obtaining the ideal light field region information of the current part to be detected, the specific steps are as follows:
obtaining ideal central point information of the current part to be detected according to the current information of the part to be detected, the positioning information and the human key point information;
and calculating to obtain ideal size information of the current part to be detected according to the current human body key point information, wherein the ideal size information comprises length information and width information.
2. The system for adjusting the light field area of the part to be photographed based on the key point detection according to claim 1, wherein: the device also comprises a display end; the display end is used for displaying the actual light field range corresponding to the visible light source end and/or the laser source end and is also used for displaying the ideal light field area obtained by the shooting area operation module.
3. The system for adjusting the light field area of the part to be photographed based on the key point detection according to claim 1 or 2, wherein: the X-ray light field adjusting module is also included; a lead plate is arranged at an opening of the X-ray variable beam limiter; the X-ray light field adjusting module is used for adjusting the position of the lead plate; the lead plate is used for adjusting the light field area of the visible light source end, the laser source end and the X-ray source end on the human body to be shot.
4. A method for adjusting the light field area of a part to be shot based on key point detection is characterized in that: the method comprises the following steps:
acquiring information of a part to be detected and positioning information of a current human body to be shot;
projecting a preset laser pattern to a current human body to be shot, acquiring an initial natural light image of the current human body to be shot, and then obtaining human body key point information in the current initial natural light image;
obtaining ideal light field region information of the current part to be detected according to the current part information to be detected, the positioning information and the human body key point information, wherein the ideal light field region information comprises ideal central point information and ideal size information;
adjusting the projection area of the laser pattern according to the ideal light field area information, then acquiring a verification natural light image containing the currently adjusted laser pattern, and obtaining laser key point information of the laser pattern in the currently verified natural light image;
determining verification light field region information corresponding to a laser pattern in a current verification natural light image according to the current laser key point information, wherein the verification light field region information comprises verification center point information and verification size information;
and judging whether the difference value between the current checking optical field area information and the ideal optical field area is smaller than a threshold value, if so, acquiring the X-ray image of the human body to be shot currently, and if not, readjusting the projection area of the laser pattern.
5. The method for adjusting the light field area of the part to be shot based on the key point detection as claimed in claim 4, wherein: the human body key point information comprises position key point information and joint key point information.
6. The method for adjusting the light field area of the part to be shot based on the key point detection as claimed in claim 5, wherein: when obtaining the ideal light field area information of the current part to be detected, the method comprises the following specific steps:
obtaining ideal central point information of the current part to be detected according to the current information of the part to be detected, the positioning information and the human key point information;
and calculating to obtain ideal size information of the current part to be detected according to the current human body key point information, wherein the ideal size information comprises length information and width information.
7. The method for adjusting the light field area of the part to be shot based on the key point detection as claimed in claim 4, wherein: when judging whether the difference value between the current checking optical field area information and the ideal optical field area is smaller than the threshold value, the method specifically comprises the following steps:
judging whether the difference value between the checking center point information in the current checking optical field area information and the ideal center point information in the current ideal optical field area information is smaller than a threshold value or not;
if not, readjusting the projection area of the laser pattern;
if so, continuously judging whether the difference value between the checking size information in the current checking optical field area information and the ideal size information in the current ideal optical field area information is smaller than a threshold value, if so, acquiring the X-ray image of the human body to be shot currently, and if not, readjusting the projection area of the laser pattern.
8. The method for adjusting the light field area of the part to be photographed based on the keypoint detection according to any one of claims 4 to 7, characterized in that: and after obtaining the ideal light field area information of the current part to be detected, outputting the ideal light field area information and the verification natural light image containing the laser pattern to a display end.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910748559.5A CN110301934B (en) | 2019-08-14 | 2019-08-14 | System and method for adjusting light field area of part to be shot based on key point detection |
| CA3135998A CA3135998A1 (en) | 2019-04-02 | 2020-04-02 | An integrated x-ray precision imaging device |
| AU2020255687A AU2020255687A1 (en) | 2019-04-02 | 2020-04-02 | An integrated X-ray precision imaging device |
| US17/268,949 US20220079544A1 (en) | 2019-04-02 | 2020-04-02 | An integrated x-ray precision imaging device |
| PCT/CA2020/050438 WO2020198870A1 (en) | 2019-04-02 | 2020-04-02 | An integrated x-ray precision imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910748559.5A CN110301934B (en) | 2019-08-14 | 2019-08-14 | System and method for adjusting light field area of part to be shot based on key point detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110301934A CN110301934A (en) | 2019-10-08 |
| CN110301934B true CN110301934B (en) | 2022-11-29 |
Family
ID=68083444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910748559.5A Active CN110301934B (en) | 2019-04-02 | 2019-08-14 | System and method for adjusting light field area of part to be shot based on key point detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110301934B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112190271A (en) * | 2020-09-15 | 2021-01-08 | 浙江大学 | Intelligent exposure control system and method |
| CN112190270A (en) * | 2020-09-15 | 2021-01-08 | 浙江大学 | Exposure control system and method for neonatal radiography |
| CN112716509B (en) * | 2020-12-24 | 2023-05-02 | 上海联影医疗科技股份有限公司 | Motion control method and system for medical equipment |
| CN114343689B (en) * | 2022-03-17 | 2022-05-27 | 晓智未来(成都)科技有限公司 | Method for measuring opening area of beam limiter based on photogrammetry and application |
| CN117717367A (en) * | 2024-02-07 | 2024-03-19 | 赛诺威盛科技(北京)股份有限公司 | Auxiliary positioning system and method for standing position computer tomography |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101884544A (en) * | 2009-05-12 | 2010-11-17 | Ge医疗系统环球技术有限公司 | Image acquisition method, device and X-ray filming machine |
| CN102961154A (en) * | 2011-08-31 | 2013-03-13 | Ge医疗系统环球技术有限公司 | Method and device for adjusting exposure field of X-ray system and X-ray system |
| WO2015146526A1 (en) * | 2014-03-24 | 2015-10-01 | 株式会社 日立メディコ | X-ray image acquisition device and elongated imaging method |
| WO2016137226A1 (en) * | 2015-02-24 | 2016-09-01 | Samsung Electronics Co., Ltd. | Medical image processing apparatus and medical image processing method |
| CN106419944A (en) * | 2016-11-09 | 2017-02-22 | 深海精密科技（深圳）有限公司 | Control method, control system and control device of auto-exposure of C-arm X-ray machine |
| CN108229418A (en) * | 2018-01-19 | 2018-06-29 | 北京市商汤科技开发有限公司 | Human body critical point detection method and apparatus, electronic equipment, storage medium and program |
| CN109620275A (en) * | 2019-01-17 | 2019-04-16 | 深圳市安健科技股份有限公司 | A kind of imaging method and terminal of medical image |
| CN110120045A (en) * | 2019-06-14 | 2019-08-13 | 晓智科技（成都）有限公司 | A kind of X-ray Imagewise exposure parameter determination method based on regression model |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TR201901223T4 (en) * | 2003-11-27 | 2019-02-21 | Nexter Munitions | A method, detection device, and protection device using the method for detecting the entry of a target into an area. |
| JP5209935B2 (en) * | 2007-10-23 | 2013-06-12 | キヤノン株式会社 | X-ray imaging apparatus, control method for X-ray imaging apparatus, program, and storage medium |
| CN101897593B (en) * | 2009-05-26 | 2014-08-13 | 清华大学 | Computer chromatography imaging device and method |
| DE102014203465A1 (en) * | 2014-02-26 | 2015-08-27 | Siemens Aktiengesellschaft | Method for selecting a radiation form filter and X-ray imaging system |
| CN105559812B (en) * | 2016-02-29 | 2018-07-17 | 深圳圣诺医疗设备股份有限公司 | Breast X-ray system and its collimator |
-
2019
- 2019-08-14 CN CN201910748559.5A patent/CN110301934B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101884544A (en) * | 2009-05-12 | 2010-11-17 | Ge医疗系统环球技术有限公司 | Image acquisition method, device and X-ray filming machine |
| CN102961154A (en) * | 2011-08-31 | 2013-03-13 | Ge医疗系统环球技术有限公司 | Method and device for adjusting exposure field of X-ray system and X-ray system |
| WO2015146526A1 (en) * | 2014-03-24 | 2015-10-01 | 株式会社 日立メディコ | X-ray image acquisition device and elongated imaging method |
| WO2016137226A1 (en) * | 2015-02-24 | 2016-09-01 | Samsung Electronics Co., Ltd. | Medical image processing apparatus and medical image processing method |
| CN106419944A (en) * | 2016-11-09 | 2017-02-22 | 深海精密科技（深圳）有限公司 | Control method, control system and control device of auto-exposure of C-arm X-ray machine |
| CN108229418A (en) * | 2018-01-19 | 2018-06-29 | 北京市商汤科技开发有限公司 | Human body critical point detection method and apparatus, electronic equipment, storage medium and program |
| CN109620275A (en) * | 2019-01-17 | 2019-04-16 | 深圳市安健科技股份有限公司 | A kind of imaging method and terminal of medical image |
| CN110120045A (en) * | 2019-06-14 | 2019-08-13 | 晓智科技（成都）有限公司 | A kind of X-ray Imagewise exposure parameter determination method based on regression model |
Non-Patent Citations (2)
| Title |
|---|
| DR系统偏差校正;马微等;《医疗装备》;20150115(第01期);第21页 * |
| 基于矩形拟合的新型人体检测方法;邓飞龙;《科技广场》;20160330(第03期);第12-17页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110301934A (en) | 2019-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110301934B (en) | System and method for adjusting light field area of part to be shot based on key point detection | |
| US8223915B2 (en) | Method and apparatus for radiographic imaging | |
| Marsh et al. | Radiologic evaluation of multichannel intracochlear implant insertion depth | |
| JP6053947B2 (en) | Method and device for determining the spatial position and orientation of vertebrae in the spine | |
| US9968252B2 (en) | Apparatus and methods for diagnosis of strabismus | |
| Johnson et al. | Initial clinical experience with a video-based patient positioning system | |
| KR100726028B1 (en) | Augmented reality projection system of affected parts and method therefor | |
| TWI654963B (en) | Automatic path planning system for pedicle screw | |
| CN103976790A (en) | Real-time evaluation and correction method in spine posterior approach operation | |
| Roy et al. | A noninvasive 3D body scanner and software tool towards analysis of scoliosis | |
| KR20140058639A (en) | X-ray system and method of using thereof | |
| KR20190058190A (en) | Spine surgical navigation system and method using augmented reality technology | |
| CN111297501A (en) | Augmented reality navigation method and system for oral implantation operation | |
| Gaddam et al. | Assessment of image distortion from head rotation in lateral cephalometry | |
| US10849588B2 (en) | Method and apparatus for drawing a cranial image trajectory | |
| CN114287915A (en) | Noninvasive scoliosis screening method and system based on back color image | |
| US20050119593A1 (en) | Method of viewing and controlling balance of the vertebral column | |
| US20220189141A1 (en) | Image processing apparatus, image processing method, and storage medium | |
| US20230368922A1 (en) | System and method for analyzing acetabular cup position | |
| Lacher et al. | Low-cost surface reconstruction for aesthetic results assessment and prediction in breast cancer surgery | |
| US20130321389A1 (en) | System and method for 3d imaging | |
| CN117576023A (en) | Spliced image verification method and device and X-ray photographing system | |
| KR100624756B1 (en) | A Method for Checking the Alignment Status of the Stereotactic Frame in Cerebral Angiography for Radiosurgery | |
| Selby et al. | Pose estimation of eyes for particle beam treatment of tumors | |
| TWI810002B (en) | Spine image surgical navigation method and system thereof, and computer readable storge medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 610000 north of Chengdu modern industrial port, PI Du District, Chengdu, Sichuan, No. 269 North Road, Hong Kong. Applicant after: Xiaozhi future (Chengdu) Technology Co.,Ltd. Address before: 610000 north of Chengdu modern industrial port, PI Du District, Chengdu, Sichuan, No. 269 North Road, Hong Kong. Applicant before: XIAOZHI TECHNOLOGY (CHENGDU) Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |