Stereoscopic Image Perspective Correction via Vanishing Point Mesh
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Solution Overview
Problem
Existing stereoscopic image processing methods fail to accurately represent depth perception due to inconsistencies in binocular parallax and focal adjustment, leading to unnatural viewing experiences.
Innovation Solution
An image processing system that divides the original image into mesh-form areas with decreasing division spacing towards the vanishing point, allowing for texture coordinates calculation and texture mapping to correct perspective, thereby generating stereoscopic images with improved naturalness and consistency in depth perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform division spacing is used in the original image, then the processing is simple, but image warping occurs and the stereoscopic view becomes unnatural
Solution Approach 1:
The patent applies different division spacing to different regions of the image based on their distance from the vanishing point. Areas closer to the vanishing point use narrower division spacing while areas farther away use wider spacing. This local adaptation of processing parameters corrects perspective distortion in the stereoscopic image without requiring uniformly complex processing across the entire image.
2Device complexity
If the focus remains constant across the stereoscopic image surface, then the processing is straightforward, but binocular parallax and convergence offsets occur making the stereoscopic view difficult to perceive
Solution Approach 1:
The patent dynamically adjusts the focal distance for different regions of the stereoscopic image based on their position relative to the vanishing point. Instead of using a constant focus across the entire image surface, the system varies the focal plane to match the depth cues required for natural stereoscopic perception at each location, thereby eliminating binocular parallax and convergence offsets.
3Measurement precision
If the original image contains perspective distortion, then the captured scene is accurate, but the stereoscopic image appears unnatural and difficult to view
Solution Approach 1:
The patent segments the original image into multiple regions based on their distance from the vanishing point. Each segment is then processed with appropriate perspective correction parameters. This segmentation allows the system to preserve the accuracy of the captured scene while applying targeted corrections to improve viewing comfort, rather than applying uniform correction that would distort the original scene geometry.
Data Source
AI summary
An original image area IMR is divided into divided image areas DR1 to DR4, texture coordinates specified by division point coordinates are obtained, and images of the divided image areas DR1 to DR4 are mapped onto polygons PL1 to PL4, based on the obtained texture coordinates. The original image area IMR is divided in such a manner that division spacing in a direction DIR1 towards a vanishing point VP1 from the original image becomes narrower as the divided image areas are closer to the vanishing point VP1 and texture coordinates are obtained, to implement correction processing for removing perspective of the original image. Correction processing is performed to remove perspective of images at a base surface of images IL1 and IR1 for the left eye and the right eye, the images IL2 and IR2 for the left eye and the right eye are generated, and a stereoscopic image is generated by synthesizing (by anaglyph processing) IL2 and IR2.