Depth Map Generation Device Merging Multiple Baselines
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Solution Overview
Problem
Existing depth map generation technologies cannot simultaneously achieve higher accuracy and a larger valid area, as they typically require a trade-off between accuracy and the range of the valid area, limiting their ability to generate depth maps with different characteristics.
Innovation Solution
A depth map generation device that includes multiple image capturers and a light source to capture structured light images, generating and merging depth maps corresponding to different baselines, allowing for the creation of a final depth map with enhanced accuracy and range by combining depth maps with varying characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a depth map with higher accuracy is generated (corresponding to long baseline), then measurement precision is improved, but the valid area becomes narrower
Solution Approach 1:
The patent merges multiple depth maps generated from different baseline configurations into a single composite depth map. By combining a first depth map with higher accuracy (long baseline) and a second depth map with larger valid area (short baseline), the system achieves both high measurement precision and extensive coverage in the final depth map.
Solution Approach 2:
The patent segments the depth mapping task into multiple independent depth maps generated by different image capturer pairs with different baseline characteristics. Each depth map is generated independently by a specific pair of image capturers, allowing optimization for different regions and characteristics before merging.
2Area of stationary object
If a depth map with larger valid area is generated (corresponding to short baseline), then area of stationary object is improved, but measurement precision deteriorates
Solution Approach 1:
The patent merges multiple depth maps generated from different baseline configurations into a single composite depth map. By combining a first depth map with higher accuracy (long baseline) and a second depth map with larger valid area (short baseline), the system achieves both high measurement precision and extensive coverage in the final depth map.
Solution Approach 2:
The patent applies different quality characteristics to different regions of the final depth map by selecting appropriate source depth maps for different areas. Regions where high accuracy is critical utilize data from the long baseline depth map, while regions requiring broader coverage utilize data from the short baseline depth map.
3Ease of operation
If a predetermined conditional judgment is used to trade-off between accuracy and valid area range, then ease of operation is improved, but adaptability deteriorates
Solution Approach 1:
The patent implements dynamic selection and merging of depth maps based on spatial position and characteristics. Rather than using a fixed conditional judgment, the system dynamically determines which depth map data to use for each region, allowing flexible adaptation to different requirements for accuracy and coverage in different areas of the field of view.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the generation of a final depth map with increased accuracy and range by merging depth maps with different characteristics, overcoming the limitations of prior art by integrating multiple image capturers and a light source to capture structured light images.
Implementation Method 1
a light source, wherein the light source and the at least two image capturers form at least two image capture pairs
Data Source
AI summary
A depth map generation device for merging multiple depth maps includes at least three image capturers, a depth map generator, and a mixer. The at least three image capturers form at least two image capture pairs. The depth map generator is coupled to the at least three image capturers for generating a depth map corresponding to each image capturer pair of the at least two image capture pairs according to an image pair captured by the each image capturer. The mixer is coupled to the depth map generator for merging at least two depth maps corresponding to the at least two image capturer pairs to generate a final depth map, wherein the at least two depth maps have different characteristics.