Geometric Correction via Image Tracking
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Solution Overview
Problem
Current geometric correction methods require precise manual positioning of geometric models and separate detection of marker correspondences at each angle, which is inefficient and labor-intensive.
Innovation Solution
A system and method for geometric correction based on image tracking, where a processor automatically selects projection images and uses correlations between adjacent images to track markers, reducing the need for precise angle placement and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual positioning of geometric models is used, then positioning accuracy can be achieved, but the process is labor-intensive and inefficient
Solution Approach 1:
The patent replaces manual mechanical positioning with an automated image tracking system that uses projection images and correlation algorithms to automatically determine marker correspondences and calculate correction parameters, eliminating manual intervention while maintaining accuracy
Solution Approach 2:
The system enables self-positioning of the geometric model through automatic image tracking and correlation analysis, where the model automatically determines its own correction parameters without requiring manual positioning operations
2Measurement precision
If separate detection of marker correspondences at each angle is performed, then accurate correspondence can be determined, but the process is time-consuming
Solution Approach 1:
The patent combines multiple angular measurements into a unified correction calculation process, where projection images from multiple angles are tracked and correlated together to simultaneously determine correspondences for all angles in a single integrated operation
Solution Approach 2:
The system performs preliminary image tracking and correlation analysis on projection images before final correction parameter calculation, pre-establishing marker correspondences across multiple angles to streamline the subsequent correction process
3Measurement precision
If precise angle placement is required, then measurement accuracy is improved, but the difficulty of operation increases
Solution Approach 1:
The patent replaces precise manual angular positioning with automated image-based angle detection, where the system calculates actual angles from projection image correlations rather than relying on manual placement accuracy
Solution Approach 2:
The system introduces projection images as an intermediary between the geometric model and angle measurement, using the images to indirectly determine angular positions without requiring direct precise mechanical placement
Data Source
AI summary
Method and system for geometric correction based on image tracking, the method including: obtaining a plurality of projection images of a geometric model, each of the projection images including a projection marker corresponding to an original marker in the geometric model; obtaining an initial correspondence between the original markers in the geometric model and the projection markers in one of the projection images; determining a target correspondence between the original markers in the geometric model and the projection markers in the tracked projection image by tracking, based on a correlation of the projection images and the initial correspondence, the projection markers in the projection images; performing, based on the target correspondence, a geometric correction.