Vehicle Panorama System Calibration Using Virtual Patterned Features
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Solution Overview
Problem
Conventional vehicle panorama systems require time-consuming calibration processes and site-specific constraints for placing calibration panels, making rapid and convenient adjustments challenging.
Innovation Solution
A method involving the use of patterned features and cameras to capture and register images, allowing for the generation of correction images to recalibrate the panorama system without the need for traditional calibration panels, enabling adjustments at any time and location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional calibration panels are used for panorama system calibration, then calibration accuracy can be achieved, but the process becomes time-consuming and requires site-specific constraints
Solution Approach 1:
The patent uses virtual calibration patterns generated from pre-stored reference images instead of physical calibration panels. The system captures images of the actual environment, extracts feature points, and compares them with pre-stored reference feature points to perform calibration. This virtual copying approach eliminates the need for physical panels while maintaining calibration accuracy.
Solution Approach 2:
The patent replaces the mechanical placement and physical presence of calibration panels with an image processing-based system. Instead of requiring physical calibration objects to be positioned in the environment, the system uses captured images, extracts features, and performs calibration through computational comparison with reference data, substituting mechanical calibration with digital image processing.
2Measurement precision
If traditional calibration panels are used for panorama system calibration, then calibration can be performed, but site constraints limit where calibration can be conducted
Solution Approach 1:
The patent makes the calibration system universal by eliminating dependence on specific physical calibration panels and locations. The system can perform calibration using any captured image of the environment containing recognizable features, allowing calibration to be conducted anywhere rather than requiring specific calibrated locations or panel placements.
Solution Approach 2:
By using virtual calibration patterns derived from reference images stored in memory, the system creates a portable calibration reference that can be applied in any location. The pre-stored reference feature points act as a universal calibration standard that can be compared against feature points extracted from images captured at any location, enabling location-independent calibration.
3Adaptability or versatility
If cameras are displaced in the panorama system, then system adaptability is improved, but calibration must be re-performed which is time-consuming
Solution Approach 1:
The patent replaces time-consuming manual re-calibration procedures with an automated image processing system. When cameras are displaced, the system automatically captures new images, extracts feature points, compares them with reference data, and performs re-calibration through computational algorithms, significantly reducing the time required compared to manual panel-based methods.
Data Source
AI summary
A method for adjusting vehicle panorama system, which comprises: a calibration pattern is disposed around a vehicle, and at least one patterned feature and a plurality of cameras are disposed on the vehicle; capture the calibration pattern and patterned feature to obtain an original image; capture the patterned feature after a period of time to obtain a correction image; compares the correction image and original image and corrects the panorama images by recombining the images shoot by the plurality of cameras according to a comparison result.