Parallax Scanning for Stereoscopic 3D Depth Perception
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Solution Overview
Problem
Conventional stereoscopic imaging methods rely on limited human perceptual mechanisms, primarily exploiting horizontal parallax, which can lead to a flattening of background scene elements and cause misinterpretation, resulting in a pseudo-stereoscopic perception that lacks realism and depth accuracy.
Innovation Solution
The method employs two parallax scanning points of view to capture and display stereoscopic images, incorporating non-horizontal parallax and other sub-process visual information, simulating the natural gaze and saccadic motions of the human eye to enhance three-dimensional perception, using parallax scanning and square-wave switching techniques compatible with conventional media systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional stereoscopic imaging methods using limited horizontal parallax are used, then the system complexity is low and compatibility with existing systems is high, but the depth perception accuracy is insufficient and background scene elements appear flattened
Solution Approach 1:
The patent introduces vertical parallax scanning in addition to horizontal parallax, transitioning from two-dimensional horizontal scanning to three-dimensional parallax scanning. This adds a new dimension (vertical movement of the optical axis) to capture comprehensive depth information, resolving the contradiction by improving depth perception accuracy through multi-dimensional parallax data while maintaining system compatibility through software-based processing.
2Reliability
If conventional stereoscopic imaging exploiting only horizontal parallax is used, then the ease of operation is high and implementation is simple, but the realism and depth accuracy of the three-dimensional perception is insufficient
Solution Approach 1:
The patent implements dynamic parallax scanning where the optical axis moves vertically during image capture, creating time-varying parallax information. This dynamic scanning approach captures multiple depth planes sequentially, improving the realism of three-dimensional perception by incorporating natural human visual scanning patterns, while the automated scanning process maintains ease of operation through systematic control.
Solution Approach 2:
The patent employs periodic vertical scanning of the optical axis at specific frequencies (e.g., 3-6 Hz) to capture parallax information across different depth planes. This periodic scanning motion systematically collects comprehensive depth data, enhancing the realism and immersion of the three-dimensional experience, while the rhythmic nature of the scanning simplifies control and synchronization.
3Measurement precision
If conventional stereoscopic displays are used, then the device complexity is low and compatibility with conventional displays is high, but the depth perception is insufficient and eyestrain occurs
Solution Approach 1:
The patent performs preliminary parallax scanning and depth information capture during the image acquisition phase, storing multiple depth planes in advance. This preliminary action allows the display system to present pre-processed depth information without requiring complex real-time processing, improving depth perception accuracy while maintaining compatibility with conventional displays and reducing computational load that could cause eyestrain.
Data Source
AI summary
A method of using two parallax scanning lenses to capture left and right points of view for stereoscopic three-dimensional display. The method includes establishing first and second parallax scanning points of view and overlapping fields of view of a subject volume including a region of interest. The method includes reading at least one scene parameter associated with the field of view of the subject volume. The method includes determining stereoscopic and parallax scanning setting based on a value(s) derived from at least one scene parameter. The method also includes computer generating and storing virtual parallax scanning stereoscopic imagery.