Light Field Stereoscopic Display Head Tracking Depth Perception

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Solution Overview

Problem

Current 3D display systems using time sequential stereo methods face limitations in providing an immersive experience due to the need for sequential presentation of left and right images, which can lead to reduced depth perception and increased computational complexity.

Innovation Solution

A head-tracked stereoscopic display system that utilizes light field type data to generate and present three-dimensional virtual content based on the user's head position and orientation, allowing for real-time updating of images and selective high-resolution rendering of areas of interest.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If time sequential stereo display is used to present left and right images sequentially, then device complexity is reduced, but depth perception and user immersion are compromised

Engineering Contradiction:
Improvedisplay system complexityVSAvoiddepth perception quality
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The patent transitions from sequential 2D image presentation to light field data that encodes multiple viewpoints simultaneously in a higher dimensional space. By representing scenes as light fields with directional information, the system enables true stereoscopic depth perception without requiring complex sequential switching mechanisms, thus resolving the contradiction between device complexity and depth perception quality

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Manufacturing precision

If full-resolution images are presented to both eyes simultaneously, then depth perception is improved, but computational requirements and data processing complexity increase

Engineering Contradiction:
Improvedepth perception qualityVSAvoidcomputational complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent segments the light field data into multiple viewpoint images that can be independently processed and rendered. By dividing the full-resolution light field into discrete viewpoint components, the system enables selective rendering and compression of individual views, reducing overall computational complexity while maintaining the ability to reconstruct high-quality stereoscopic images when needed

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If light field type data is used to capture multiple perspectives, then user immersion and interactivity are improved, but data volume and processing requirements increase

Engineering Contradiction:
Improveuser immersion levelVSAvoiddata volume
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent applies partial rendering by selectively processing and transmitting only the necessary light field data corresponding to the user's current viewpoint and area of interest. Rather than processing all possible viewpoints at full resolution, the system renders only the essential portions, significantly reducing data volume and processing requirements while maintaining high user immersion for the active viewing region

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS9848184B2Stereoscopic display system using light field type data
Publication Date: 2017.12.19 ZSPACE INC
  • US9848184B2 patent drawing
  • US9848184B2 patent drawing
  • US9848184B2 patent drawing

AI summary

Systems and methods for a head tracked stereoscopic display system that uses light field type data may include receiving light field type data corresponding to a scene. The stereoscopic display system may track a user's head. Using the received light field type data and the head tracking, the system may generate three dimensional (3D) virtual content that corresponds to a virtual representation of the scene. The stereoscopic display system may then present the 3D virtual content to a user. The stereoscopic display system may present a left eye perspective image and a right eye perspective image of the scene to the user based on the position and orientation of the user's head. The images presented to the user may be updated based on a change in the position or the orientation of the user's head or based on receiving user input.