3D Display Depth Camera Segmentation for Blind Area Reduction
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Solution Overview
Problem
Current 3D display technologies using fixed-focus cameras suffer from limited detection precision outside their depth-of-field range and a large blind area for short-distance operations, restricting interaction and positioning in 3D spaces.
Innovation Solution
A display device with multiple depth cameras arranged around a display panel, each with non-overlapping depth-of-field ranges, a light emitter, and a processor to process image information for extended depth-of-field capture and 3D image formation, allowing for precise short-distance interaction and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed-focus camera is used for 3D imaging, then the device complexity is reduced, but the measurement precision deteriorates outside the depth-of-field range
Solution Approach 1:
The patent divides the depth detection task into multiple segments by using multiple depth cameras with different depth-of-field ranges. Each camera is responsible for a specific depth range, and together they cover the entire required depth field, thereby maintaining high measurement precision across all depths while using relatively simple fixed-focus cameras.
Solution Approach 2:
The patent assigns different depth-of-field characteristics to different cameras based on their local requirements. Each depth camera is optimized for its specific depth range, with appropriate focal length and aperture settings, ensuring high measurement precision in its designated zone without requiring complex variable-focus mechanisms.
2Device complexity
If a single depth camera is used, then the device complexity is reduced, but the blind area for short-distance operations increases
Solution Approach 1:
The patent segments the spatial detection field into multiple zones by deploying multiple depth cameras at different positions and orientations. Each camera covers a specific spatial region, and their combined coverage eliminates blind areas, particularly in short-distance operations, while maintaining relatively simple individual camera systems.
Solution Approach 2:
The patent adds spatial dimensionality to the camera arrangement by positioning depth cameras at different locations and angles around the display panel. This multi-dimensional configuration ensures comprehensive coverage of the 3D interaction space, eliminating blind spots that would exist with a single camera.
3Measurement precision
If multiple depth cameras with overlapping depth-of-field ranges are used, then the measurement precision is improved, but the loss of information increases due to exposure conflicts
Solution Approach 1:
The patent implements periodic action by assigning different exposure times to different depth cameras. Cameras with different depth-of-field ranges are activated in a time-division manner, with each camera capturing images during its designated exposure period. This periodic activation sequence eliminates exposure conflicts and prevents information loss while maintaining high measurement precision across all depth ranges.
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
The solution extends the depth-of-field range for precise 3D imaging and interaction, reducing blind areas and enhancing user experience in 3D space operations by combining non-overlapping depth-of-field ranges and optimizing light emission and exposure times.
Implementation Method 1
the light emitter is configured to emit light at a preset wavelength to an object; and each of the depth cameras is configured to photograph the object, and to receive the light at the preset length reflected by the object to obtain the image information
Data Source
AI summary
The disclosure discloses a display device, a display system and a three-dimension display method. The display device includes a display panel and at least one camera device arranged on the periphery of the display panel, where each of the at least one camera device includes at least two depth cameras, and a depth-of-field range of any one of the depth cameras does not fully overlap with depth-of-field ranges of the other depth cameras; and the display panel is configured to display a 3D image formed by processing image information captured by the at least one camera device.