Depth Image Capture for Stereoscopic Display Positioning
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Solution Overview
Problem
Current stereoscopic display technologies face challenges in capturing and displaying depth images effectively, particularly in determining the photographing direction based on the relative position relationship between a client device and a user-specified display position, which affects the vividness and immersion of the visual experience.
Innovation Solution
A method and apparatus that involve a client device communicating with a server to control an image capture device to capture depth images from a determined photographing direction, extracting the target object image, and displaying it at the specified position, utilizing pre-stored relationships between display positions and photographing directions to reduce data volume and enhance the stereoscopic display effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If stereoscopic display technology displays depth images to achieve three-dimensional visual effect, then visual effect quality is improved, but data volume increases
Solution Approach 1:
The patent segments the complete scene into multiple candidate region images based on different photographing directions. Instead of transmitting all possible view images, only the relevant region corresponding to the user's gaze direction is selected and transmitted, reducing data volume while maintaining visual quality.
Solution Approach 2:
The patent applies local quality by transmitting high-quality depth image data only for the specific region of interest (determined by user gaze direction) rather than uniformly processing the entire scene. This focuses computational and transmission resources on the locally relevant area.
2Area of stationary object
If multiple cameras are used to capture depth images from different directions, then photographing coverage is improved, but device complexity increases
Solution Approach 1:
The patent pre-stores correspondence relationships between display positions and photographing directions before runtime. When a user specifies a display position, the system quickly retrieves the corresponding photographing direction from pre-computed data, avoiding complex real-time calculations and reducing processing complexity.
Solution Approach 2:
The patent introduces a correspondence relationship table as an intermediary between display positions and photographing directions. This intermediary structure simplifies the mapping process by providing direct look-up paths rather than requiring complex geometric calculations during runtime.
3Loss of information
If the system processes and transmits complete depth images, then image completeness is improved, but transmission cost increases
Solution Approach 1:
The patent extracts only the necessary portion of the depth image data corresponding to the user's gaze direction and transmits only that extracted region. This eliminates unnecessary data transmission while ensuring that the complete and relevant information is preserved for the user's viewing needs.
4Measurement precision
If the photographing direction is determined based on relative position relationship, then positioning precision is improved, but calculation complexity increases
Solution Approach 1:
The patent pre-calculates and stores the correspondence between display positions and photographing directions in a lookup table. During runtime, the system simply retrieves the pre-computed direction data based on the user's specified position, achieving precise positioning without performing complex real-time calculations.
Data Source
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AI summary
A method of controlling image display includes: receiving an image capture instruction from a client device, wherein the image capture instruction includes a photographing direction, and the photographing direction is determined by the client device according to a relative position relationship between a position of the client device and a user-specified display position; controlling an image capture device to perform image capture according to the photographing direction, to obtain a depth image comprising a target object image; extracting the target object image from the depth image; and sending the target object image to the client device such that the client device displays the target object image at the display position.