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CN-114937069-B - Method and device for determining radiation level, electronic equipment and computer storage medium

CN114937069BCN 114937069 BCN114937069 BCN 114937069BCN-114937069-B

Abstract

The invention relates to a radiation level determining method, a device, an electronic device and a computer storage medium, which comprise the steps of obtaining depth information of a target image, wherein a target object in the target image comprises a radiation source, a moving object and a fixed object; the method comprises the steps of determining a current first space region of a moving object based on depth information of a target image, determining a second space region formed by radiation rays emitted by a ray source, determining an interaction region of the first space region and the second space region, determining a current distance between the moving object and the ray source, and determining a radiation level in the current interaction region based on the current distance. The invention can guide the stations of the medical staff according to the radiation level in the interaction area, and ensure the safety of the medical staff.

Inventors

  • FENG BO

Assignees

  • 上海联影医疗科技股份有限公司

Dates

Publication Date
20260512
Application Date
20220525

Claims (9)

  1. 1. A method of determining a radiation level, comprising: Obtaining depth information of a target image, wherein a target object in the target image comprises a ray source, a moving object and a fixed object; Determining a current first space region of the moving object based on the depth information of the target image, and determining a second space region formed by radiation rays emitted by the ray source; determining an interaction area of the first space area and the second space area; the method comprises the steps of obtaining the current distance between the moving object and the ray source, and determining the radiation level in a current interaction area based on the current distance, wherein the method comprises the steps of calculating the current distance between the moving object and the ray source based on second point cloud data and third point cloud data; The second point cloud data is obtained by determining a second pixel point of the moving object in the target image at present; the third point cloud data is obtained by determining a third pixel point of the ray source in the target image and obtaining third point cloud data of the third pixel point.
  2. 2. The method of claim 1, wherein the acquiring depth information of the target image comprises: Acquiring an original image of the target object based on an industrial camera; Acquiring calibration parameters of the industrial camera, and correcting the original image according to the calibration parameters; and carrying out pixel point matching on the corrected original image, and calculating the depth of each pixel according to a matching result so as to obtain the depth information of the target image.
  3. 3. The method of claim 2, wherein the determining a current first spatial region of the moving object based on the depth information of the target image and determining a second spatial region formed by radiation rays emitted by the radiation source comprises: Constructing a three-dimensional space coordinate system based on the depth information of the target image; Determining a current first space region of the moving object in the three-dimensional space coordinate system; and determining a second space region formed by radiation rays emitted by the ray source in the three-dimensional space coordinate system.
  4. 4. A method according to claim 3, wherein said constructing a three-dimensional spatial coordinate system based on depth information of said target image comprises: Acquiring pixel information of the target image; Calculating first point cloud data of each first pixel point of the target image based on the depth information, pixel information and calibration parameters of the industrial camera; And constructing the three-dimensional space coordinate system based on the first point cloud data of each first pixel point of the target image.
  5. 5. The method of claim 4, wherein said determining a current first spatial region of the moving object in the three-dimensional spatial coordinate system comprises: And determining a current first space region of the moving object based on the position of the second point cloud data in the three-dimensional space coordinate system.
  6. 6. The method of claim 5, wherein said determining a second spatial region in said three-dimensional spatial coordinate system formed by radiation rays emitted by said radiation source comprises: acquiring parameter values of a ray source, wherein the ray source parameters comprise a ray emission angle and a ray emission port distance; calculating a path of the radiation ray based on parameter values according to the third point cloud data and the ray source, and determining fourth point cloud data of the path; a second spatial region of the path of the radiation ray is determined based on the location of the fourth point cloud data in the three-dimensional spatial coordinate system.
  7. 7. A radiation level determining apparatus, comprising: The device comprises an acquisition module, a display module and a display module, wherein the acquisition module is used for acquiring depth information of a target image, and a target object in the target image comprises a ray source, a moving object and a fixed object; The radiation area determining module is used for determining a current first space area of the moving object based on the depth information of the target image and determining a second space area formed by radiation rays emitted by the ray source; the interaction region determining module is used for determining interaction regions of the first space region and the second space region; The radiation level determining module is used for obtaining the current distance between the moving object and the ray source and determining the radiation level in the current interaction area based on the current distance, and comprises the steps of calculating the current distance between the moving object and the ray source based on second point cloud data and third point cloud data; The second point cloud data is obtained by determining a second pixel point of the moving object in the target image at present; the third point cloud data is obtained by determining a third pixel point of the ray source in the target image and obtaining third point cloud data of the third pixel point.
  8. 8. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the radiation level determination method according to any one of claims 1 to 6 when the computer program is executed.
  9. 9. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program which, when executed by a processor, implements the steps of the radiation level determination method according to any one of claims 1 to 6.

Description

Method and device for determining radiation level, electronic equipment and computer storage medium Technical Field The present invention relates to the field of image processing technologies, and in particular, to a method and apparatus for determining a radiation level, an electronic device, and a computer storage medium. Background When DSA (DigitalSubtractionAngiography, digital subtraction angiography technology) is used for interventional therapy, a radiation source is needed to be used, radiation rays emitted by the radiation source have radiation effect on a human body, and in the prior art, personal protection is usually carried out by a lead clothing wearing mode, but the mode is generally limited to main organs of the body, limbs and heads are not generally protected, the safety of medical staff is not effectively guaranteed, or the radiation dose emitted by the radiation source is reduced to ensure the safety of the medical staff, but the mode has influence on the operation effect. Therefore, how to reduce the radiation effect of the radiation rays on medical staff in an operating room is a problem to be solved. Disclosure of Invention In view of the foregoing, it is desirable to provide a radiation level determination method for guiding a medical staff in a standing position to ensure the safety of the medical staff. In order to solve the above problems, the present invention provides a radiation level determining method, including: Obtaining depth information of a target image, wherein a target object in the target image comprises a ray source, a moving object and a fixed object; Determining a current first space region of a moving object based on depth information of a target image, and determining a second space region formed by radiation rays emitted by a ray source; determining an interaction area of the first space area and the second space area; the current distance between the moving object and the radiation source is obtained, and the radiation level in the current interaction area is determined based on the current distance. Optionally, acquiring depth information of the target image includes: acquiring an original image of a target object based on an industrial camera; acquiring calibration parameters of an industrial camera, and correcting an original image according to the calibration parameters; And carrying out pixel point matching on the corrected original image, and calculating the depth of each pixel according to a matching result so as to obtain the depth information of the target image. Optionally, determining the current first spatial region of the moving object based on the depth information of the target image, and determining the second spatial region formed by the radiation rays emitted by the radiation source includes: Constructing a three-dimensional space coordinate system based on the depth information of the target image; determining a current first space region of a moving object in a three-dimensional space coordinate system; A second spatial region formed by radiation rays emitted by the radiation source is determined in a three-dimensional spatial coordinate system. Optionally, constructing the three-dimensional space coordinate system based on the depth information of the target image includes: acquiring pixel information of a target image; Calculating first point cloud data of each first pixel point of the target image based on the depth information, the pixel information and the calibration parameters of the industrial camera; And constructing a three-dimensional space coordinate system based on the first point cloud data of each first pixel point of the target image. Optionally, determining the current first spatial region of the moving object in the three-dimensional spatial coordinate system includes: Determining a second pixel point of the moving object in the target image; Acquiring second point cloud data of a second pixel point; and determining the current first space region of the moving object based on the position of the second point cloud data in the three-dimensional space coordinate system. Optionally, determining a second spatial region formed by radiation rays emitted by the radiation source in the three-dimensional spatial coordinate system includes: determining a third pixel point of the ray source in the target image; Acquiring third point cloud data of a third pixel point; acquiring parameter values of a ray source, wherein the ray source parameters comprise a ray emission angle and a ray emission port distance; Calculating a path of the radiation ray based on the parameter values according to the third point cloud data and the ray source, and determining fourth point cloud data of the path; A second spatial region of the path of the radiation ray is determined based on the location of the fourth point cloud data in the three-dimensional spatial coordinate system. Optionally, obtaining a current distance between the moving object and the r