3D Point Cloud Zoom Alignment for Multi-Camera Stitching
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Solution Overview
Problem
Combining three-dimensional information acquired from multiple range-finding cameras with varying zoom lens magnifications results in mismatched joining portions and potential resolution loss due to mechanical unevenness and control errors, leading to unbalanced and lower quality three-dimensional information.
Innovation Solution
A three-dimensional information processing device and method that includes identification and calculation of overlapping point groups, determining reduction/enlargement magnifications, and adjusting zoom positions to ensure these magnifications meet a threshold value, thereby ensuring appropriate combination of three-dimensional data from multiple cameras.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If three-dimensional information is acquired from multiple range-finding cameras with different zoom magnifications, then the angle of view coverage is improved, but the joining portions become mismatched and quality deteriorates
Solution Approach 1:
The patent changes the zoom magnification parameter of the range-finding cameras to be uniform across all cameras. By controlling the zoom lens magnification to be the same for all cameras, the joining portions of three-dimensional information from multiple cameras are properly aligned, preventing mismatch and quality deterioration while still maintaining comprehensive angle of view coverage.
2Area of stationary object
If digital enlargement process is performed to combine three-dimensional information, then the coverage area is improved, but the resolution becomes lower and quality becomes unbalanced
Solution Approach 1:
The patent performs preliminary action by uniformizing the zoom magnification settings before acquiring three-dimensional information from multiple cameras. This preliminary standardization prevents the need for subsequent digital enlargement processes, thereby maintaining high resolution and balanced quality across all combined data without sacrificing coverage area.
3Adaptability or versatility
If zoom lens magnification varies among range-finding cameras, then the adaptability to different shooting distances is improved, but the combination accuracy of three-dimensional information deteriorates
Solution Approach 1:
The patent applies parameter changes by standardizing the zoom lens magnification to a uniform value across all range-finding cameras. This uniform parameter setting ensures that three-dimensional information from different cameras can be accurately combined, improving combination accuracy while adaptability to different shooting distances is maintained through proper camera positioning and uniform magnification settings.
Data Source
AI summary
A three-dimensional information processing device includes a first acquisition unit configured to acquire first point group data which is point group data of a subject acquired at a first zoom magnification by a first point group data acquisition device, a second acquisition unit configured to acquire second point group data which is point group data of the subject acquired at a second zoom magnification by a second point group data acquisition device, the second point group data acquisition device acquiring point group data at an angle of view of which at least a part overlaps an angle of view at which the first point group data acquisition device acquires the first point group data, and an identification unit configured to identify overlapping portions of point groups included in the first point group data and point groups included in the second point group data.