Stereoscopic Image Generation Using Viewer Distance Compensation
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Solution Overview
Problem
Existing image processing devices struggle to accurately convey the size and depth of objects in stereoscopic images, leading to discrepancies in perception due to varying display conditions, resulting in unnatural viewing experiences.
Innovation Solution
A signal processing device that analyzes input images, acquires distance information between the viewer and the screen, and generates stereoscopic images using this data, along with screen specifications, to accurately represent object sizes and depths, thereby enhancing natural depth perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If stereoscopic images are generated using conventional methods without considering viewer-screen distance, then the stereoscopic effect can be achieved, but the viewer perceives objects at incorrect sizes and experiences a sense of discrepancy
Solution Approach 1:
The patent applies preliminary action by pre-calculating and embedding distance compensation parameters into the stereoscopic image generation process. The system determines the appropriate parallax amount based on the viewer-screen distance before generating the final stereoscopic image, ensuring that objects are displayed at their perceived actual size. This approach resolves the contradiction by preparing the correction data in advance, avoiding complex real-time calculations while maintaining accurate size perception.
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting the parallax amount parameter based on the viewer-screen distance. The system modifies the horizontal displacement between left and right eye images according to the distance parameter, which compensates for the size perception discrepancy. This parameter adjustment allows the stereoscopic image to accurately represent object sizes at different viewing distances without requiring complex processing systems.
2Adaptability or versatility
If the parallax amount is increased to enhance depth perception, then the stereoscopic effect is improved, but objects appear larger than their actual size and cause viewer discomfort
Solution Approach 1:
The patent applies dynamics by making the parallax amount adaptive rather than fixed. The system dynamically adjusts the parallax parameter based on the viewer-screen distance, ensuring that depth perception is optimized for each specific viewing condition. This dynamic adjustment prevents objects from appearing excessively large or causing discomfort, as the parallax is scaled appropriately to the actual viewing geometry.
Solution Approach 2:
The patent utilizes feedback by using the viewer-screen distance information to regulate the parallax amount. The system receives feedback about the actual viewing distance and adjusts the stereoscopic image parameters accordingly to maintain accurate size perception. This feedback mechanism ensures that enhanced depth perception does not come at the cost of object size distortion or viewer discomfort.
3Reliability
If conventional stereoscopic image generation is used without distance information, then the processing is simpler, but the viewer cannot perceive objects at their actual size and experiences unnatural viewing
Solution Approach 1:
The patent introduces an intermediary element in the form of a distance information processing module that bridges the gap between the viewer and the stereoscopic image generation. This intermediary component analyzes the viewer-screen distance and uses it as a reference to calculate the appropriate parallax amount, ensuring accurate size perception. The intermediary approach maintains reliability by incorporating distance information while managing system complexity through modular design.
Data Source
AI summary
There is provided a signal processing device including an image analysis portion that analyzes content of an input image, a distance information acquisition portion that acquires distance information between a viewer who views a screen on which the input image is displayed and the screen, and a stereoscopic image generation portion that generates a stereoscopic image from the original input image, using an analysis result of the input image analyzed by the image analysis portion, the distance information acquired by the distance information acquisition portion, and information about a specification of the screen in a horizontal direction.