Camera Calibration via Fused Map and Reflectance Image Matching
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Solution Overview
Problem
Current camera calibration methods in photogrammetry and computer vision lack efficient tools for users to select and utilize matching point pairs from images, hindering the calibration process.
Innovation Solution
A method and apparatus that allow users to input and fuse high-precision map images and reflectance images, enabling point selection and matching point pair identification for camera calibration, with features like displaying fused images, selecting points, and outputting coordinates for calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual camera calibration methods are used without specialized tools, then the calibration process can be performed with basic equipment, but the efficiency and accuracy of selecting matching point pairs is reduced
Solution Approach 1:
The system divides the calibration process into distinct functional modules: image input module, image fusion module, point selection module, and coordinate output module. Each module handles a specific task, allowing users to efficiently select matching point pairs without being overwhelmed by a monolithic complex system.
Solution Approach 2:
The patent introduces an intermediary software system that acts as a bridge between the user and the camera calibration process. This intermediary provides specialized tools for image fusion and point selection, significantly improving calibration efficiency without requiring complex hardware modifications.
2Adaptability or versatility
If multiple image processing features are integrated into the calibration tool, then the functionality and user convenience are improved, but the device complexity increases
Solution Approach 1:
The calibration tool is designed as a universal platform that integrates multiple functions: displaying original images, fusing high-precision map images with reflectance images, selecting points, and outputting coordinates. This multi-functional design allows a single system to handle various calibration needs without requiring separate specialized tools for each function.
Solution Approach 2:
The patent combines image fusion technology with point selection functionality in a single integrated system. The image fusion module merges high-precision map data with reflectance image data to create enhanced visual references, which are then used by the point selection module to identify matching features more accurately and efficiently.
Data Source
AI summary
Embodiments of the present disclosure relate to methods and apparatuses for outputting information and calibrating a camera. The method may include: acquiring a first image, a second image, and a third image, the first image being an image photographed by a to-be-calibrated camera, the second image being a high-precision map image including a target area indicated by the first image, and the third image being a reflectance image including the target area; fusing the second image and the third image to obtain a fused image; determining a matching point pair based on points selected by a user in the first image and the fused image; and calibrating the to-be-calibrated camera based on coordinates of the matching point pair.