X-ray Imaging Pose Detection Using Optical Key Points
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Solution Overview
Problem
In X-ray imaging systems, capturing dynamic images of joints like the neck, knee, and shoulder is challenging due to the difficulty in monitoring and guiding the movement and location of the object under examination, making it hard to ensure accurate exposure and pose alignment for effective imaging.
Innovation Solution
An X-ray imaging system and method that utilize a control apparatus with a protocol selection unit, pose determination unit, and exposure control unit, which acquire optical images, identify key points, and control exposure based on preset poses and exposure sites to ensure accurate alignment and range, using multiple cameras and a graphical user interface for operator guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual monitoring and guidance of object movement is used during X-ray exposure, then operator control flexibility is maintained, but measurement precision of pose and location deteriorates
Solution Approach 1:
The patent introduces cameras as intermediary devices to capture optical images of the object under examination. These cameras serve as mediators between the operator and the object, automatically detecting pose and location without requiring manual monitoring. The camera system captures images that are then processed to identify key points and determine whether the object satisfies preset pose requirements, thereby improving measurement precision while reducing operational complexity.
Solution Approach 2:
The patent replaces manual mechanical monitoring and guidance with an automated optical detection system. Instead of operators visually monitoring and guiding object movement, the system uses cameras to capture images, automatically identifies key points, and determines pose satisfaction. This substitution of mechanical/manual operations with automated optical and computational methods improves both precision and efficiency.
2Measurement precision
If automated pose detection using cameras is implemented, then pose and location measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent makes the camera system multi-functional by using it for both capturing optical images for pose detection and providing visual feedback to operators. The same camera hardware serves multiple purposes: automatic pose measurement, location verification, and operator guidance display. This universal use of the camera system reduces the need for separate dedicated devices, thereby limiting the increase in device complexity while maintaining high measurement precision.
Solution Approach 2:
The patent implements feedback mechanisms where captured optical images are processed and used to provide real-time information to operators through the display device. The system analyzes the images to determine pose satisfaction and provides visual feedback indicating whether the object meets the preset pose requirements. This feedback loop enables automated precision measurement while keeping the system user-friendly and manageable, offsetting the complexity increase through intelligent automation rather than raw hardware multiplication.
3Measurement precision
If multiple cameras are used to capture optical images from different angles, then measurement precision and coverage are improved, but device complexity and cost increase
Solution Approach 1:
The patent applies local quality by positioning cameras at specific locations to capture images of specific regions of interest. Rather than using multiple cameras uniformly, the system strategically places cameras to obtain optimal views of critical areas for pose detection. The protocol selection unit configures which cameras to use and what regions to focus on based on the examination requirements, thereby achieving high precision for specific measurement points without the full complexity of a multi-camera system operating simultaneously across all areas.
Data Source
AI summary
The present application provides an X-ray imaging system and an X-ray imaging method for dynamic examination. The X-ray imaging system comprises: a first camera and a control apparatus; the first camera being used to acquire a first optical image of an object under examination, and the control apparatus comprising a protocol selection unit, a pose determination unit and an exposure control unit; the protocol selection unit is used to select a corresponding protocol based on information of the object under examination, the protocol at least comprising a preset pose for exposure and an exposure site; the pose determination unit is used to identify key points on the first optical image, and to determine, based on the key points, whether the pose of the object under examination satisfies the preset pose; and the exposure control unit is configured to control exposure when the preset pose is satisfied and the location of the exposure site of the object under examination is within an exposure range, so as to acquire an X-ray image corresponding to the preset pose.