Radiography Posture Detection Using Distance Measurement
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Solution Overview
Problem
Existing radiography systems impose a psychological burden on subjects, particularly women, by requiring camera images for positioning adjustments, which can lead to inaccurate extraction and reduced image resolution.
Innovation Solution
A radiography system utilizing a distance measurement device to generate posture information for the subject and apparatus, enabling notification and control mechanisms to support accurate radiation image capture without relying on camera images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If camera images are used to adjust detector position and capture subject posture, then positioning accuracy is improved, but psychological burden on subjects increases
Solution Approach 1:
The patent replaces the optical camera-based detection system with a distance measurement device that uses electromagnetic waves (such as time-of-flight measurement) to detect subject position and posture. This substitution maintains measurement precision while eliminating the psychological burden associated with visible light camera imaging, as the distance measurement device operates in a wavelength range imperceptible to humans.
Solution Approach 2:
The patent introduces a distance measurement device as an intermediary between the subject and the imaging system. Instead of directly capturing visual images of the subject, the system uses distance information from the measurement device to infer subject position and posture, then adjusts the detector accordingly. This intermediary approach preserves positioning accuracy while avoiding direct visual observation of the subject.
2Object-affected harmful factors
If camera image resolution is lowered to reduce psychological burden, then subject comfort is improved, but extraction accuracy deteriorates
Solution Approach 1:
The patent replaces the camera imaging system with a distance measurement device that directly measures spatial parameters. Instead of capturing images and processing them to extract position information, the system directly obtains distance data through electromagnetic wave measurement, eliminating the need for image resolution and subsequent extraction processing, thereby maintaining high accuracy without psychological burden.
Solution Approach 2:
The patent creates a digital representation of subject position and posture based on distance measurement data rather than visual image data. The distance measurement device generates precise spatial coordinates and dimensional information that directly represent the subject's position and posture, providing an accurate digital copy without requiring visual imaging.
3Object-affected harmful factors
If distance measurement device is added to replace camera system, then psychological burden is reduced, but device complexity increases
Solution Approach 1:
The patent integrates the distance measurement device into the existing radiography system architecture, where it serves multiple functions: detecting subject position, measuring subject posture, and providing data for detector positioning. This multi-functional integration reduces the need for separate systems and minimizes overall device complexity despite adding new measurement capabilities.
Solution Approach 2:
The distance measurement device automatically performs position and posture detection without requiring manual operation or complex processing. The device self-calibrates and provides ready-to-use measurement data that can be directly utilized by the control unit, reducing the operational complexity and eliminating the need for complex image processing algorithms required by camera systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system reduces psychological burden on subjects while ensuring accurate positioning and capturing high-quality radiation images by using distance measurement technology to determine subject and apparatus posture, facilitating smooth image capture.
Implementation Method 1
a distance measurement device 11 that generates distance measurement information 30a about a detection target including the subject 31
Data Source
AI summary
A radiography system includes a radiography apparatus, a distance measurement device, and a processor. The processor generates subject posture information indicating a posture of a subject based on distance measurement information generated by the distance measurement device, generates positional relationship estimation information indicating a position, a posture, and/or an orientation of the subject with respect to the radiography apparatus by using the subject posture information and apparatus posture information indicating a posture of the radiography apparatus, and performs notification control of giving notification about capturing of the radiation image and/or imaging apparatus control with respect to the radiography apparatus based on the positional relationship estimation information.