Dynamic 3D Image Filter Tracking Viewer Position
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Solution Overview
Problem
Current 3D image display technologies, such as shutter glass and holographic methods, have limitations like the need for additional equipment and restricted viewing positions, making the auto-stereoscopic method more desirable but still imperfect for providing a seamless 3D viewing experience without crosstalk or image flipping.
Innovation Solution
A 3D image display system that includes a camera, a 3D image processing system, and a display apparatus, where the 3D image processing system detects the viewer's position and adjusts a 3D image filter's transmissive and non-transmissive regions to maintain a 'sweet spot' as the viewer moves, preventing crosstalk and image flipping by dynamically controlling the position and movement of the 3D image filter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If shutter glass method is used to display 3D images, then 3D viewing effect is achieved, but additional equipment is required
Solution Approach 1:
The patent extracts and removes the shutter glass equipment from the system, replacing it with an auto-stereoscopic display that generates 3D effects directly through software processing and optical filtering, eliminating the need for additional wearable equipment
Solution Approach 2:
The patent replaces the mechanical shutter glass system with an optical filtering system using lenticular lenses or parallax barriers combined with software-based image separation, substituting mechanical components with optical and computational methods
2Reliability
If holographic method is used to display 3D images, then 3D viewing effect is achieved, but viewing position is restricted
Solution Approach 1:
The patent implements dynamic adjustment of the sweet spot position by moving the optical filter (lenticular lens or parallax barrier) in response to detected viewer position, allowing the 3D viewing area to adapt and follow the viewer's movement rather than being fixed
Solution Approach 2:
The system uses camera-based viewer position detection as feedback to continuously adjust the optical filter position, creating a closed-loop control system that maintains the sweet spot aligned with the viewer's location
3Device complexity
If auto-stereoscopic method is used to display 3D images, then additional equipment is eliminated, but crosstalk and image flipping occur when viewer moves
Solution Approach 1:
The patent makes the optical filter dynamically movable rather than static, allowing it to adjust its position to track the viewer and maintain proper image alignment, preventing crosstalk and flipping that occur with fixed filters
Solution Approach 2:
The system changes the position parameter of the optical filter in real-time based on viewer location, adjusting the physical configuration of the display system to maintain optimal viewing conditions as the viewer moves
Data Source
AI summary
An apparatus and a method of displaying 3-Dimensional image are disclosed. A camera unit serves to capture an image of a viewer. A position tracking device serves to detect a position of the viewer using a video frame included in the captured image and calculate a position of a non-transmissive region of a 3D image filter based on the detected position of the viewer. A display unit serves to move the non-transmissive region of the 3D image filter according to the calculated position of the non-transmissive region. Changing a sweet spot of the 3D image to suit movement of the viewer has the effects of enlarge a viewing angle of the viewer and preventing crosstalk and image flipping even when the viewer moves.