Holographic Display Hogel Interpolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for video holographic display of dynamic 3D scenes require excessive computational resources due to the need for brute force computation of 2D renderings from each hogel in a 2D hogel array, making real-time rendering impractical without significant improvements in processing capability.
Innovation Solution
A method that involves generating 2D perspective renderings for a sparse subset of hogels, interpolating radiation patterns for complementary hogels, and storing these patterns to reduce computational burden, allowing for efficient rendering of holographic views by exploiting the correlation between adjacent hogel radiation patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If brute force computation of 2D renderings from each hogel is used, then complete 4D wavefield accuracy is achieved, but computational resources and processing time become excessive
Solution Approach 1:
The hogel array is divided into a sparse subset and a complementary subset. The sparse subset (e.g., every fourth hogel) is rendered using brute force computation to ensure accuracy, while the complementary subset is generated through interpolation. This segmentation allows the system to maintain wavefield accuracy for critical elements while dramatically reducing overall computational burden.
Solution Approach 2:
Instead of applying brute force computation to all hogels (excessive action), the method applies it only to a partial subset of hogels that are sufficiently spaced apart. This partial action is sufficient to capture the essential wavefield characteristics, which are then propagated to the remaining hogels through interpolation, achieving acceptable accuracy with reduced computation.
2Measurement precision
If brute force rendering is applied to all hogels, then complete radiation pattern accuracy is achieved, but hardware requirements become unrealistic
Solution Approach 1:
The radiation patterns from sparsely rendered hogels serve as templates or copies that are interpolated and adapted for the complementary hogels. Instead of computing unique radiation patterns for every hogel, the system creates derived copies through interpolation, significantly reducing the computational and hardware resources needed while maintaining acceptable accuracy.
Solution Approach 2:
The method changes the computational parameters by rendering only a sparse subset of hogels at full resolution while using interpolation for the rest. This parameter change in the rendering strategy (from complete to partial sampling) reduces hardware requirements while maintaining the essential characteristics of the radiation patterns through mathematical interpolation.
3Manufacturing precision
If 2D renderings are generated for every hogel, then full parallax view quality is maintained, but processing time increases significantly
Solution Approach 1:
The system performs preliminary brute force rendering only on the sparse subset of hogels before generating the complete wavefield. This preliminary action on a reduced set of elements establishes the foundational radiation patterns that are then interpolated to complete the full hogel array, significantly reducing total processing time while maintaining image quality.
Solution Approach 2:
The method applies full-quality rendering to only the necessary sparse subset of hogels rather than all hogels. This partial action is sufficient to capture the essential visual information, which is then propagated through interpolation to generate the complete holographic image with full parallax, reducing processing time while maintaining quality.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
System and method for video holographic display. Information is received regarding a 2D hogel array with multiple hogel apertures, specifying number, size, and/or spacing of the hogel apertures. Information regarding a 3D scene is received, including a scaling factor mapping the 3D scene to a 3D display volume. Due to gradual variation of radiation patterns from hogel to hogel, a full set of color radiation intensity patterns for the entire hogel array may be generated by interpolating the color radiation intensity patterns from a sparse subset of the hogels without having to compute all of the patterns. The full set of color radiation intensity patterns may then be used to holographically display the 3D scene.