Hologram Layer Data Occlusion Boundary Wavefront Leakage Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hologram display devices experience ringing issues due to wavefront leakage between foreground and background objects, leading to blurred contours and reduced visibility in holographic projections.
Innovation Solution
An information processing device that specifies occlusion regions in layer data and modifies the amplitude or phase at these boundaries to suppress wavefront leakage, using techniques such as amplitude extension, smoothing, and phase modification to prevent wavefront spread into occlusion regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If hidden surface removal processing is performed to reproduce three-dimensional objects in hologram display, then the visibility of foreground objects is improved, but wavefront leakage occurs at boundaries causing ringing artifacts
Solution Approach 1:
The patent applies preliminary action by performing amplitude modification at the boundary of occlusion regions before hologram reconstruction. The specifying unit identifies occlusion regions where wavefront leakage occurs, and the modifying unit pre-adjusts the amplitude distribution at these boundaries to suppress leakage before the wavefront propagation process, thereby preventing ringing artifacts while maintaining foreground visibility
Solution Approach 2:
The patent applies local quality by selectively modifying the amplitude only at the boundary regions of occlusion areas rather than uniformly across the entire hologram. The specifying unit locates specific boundary regions where wavefront leakage occurs, and the modifying unit applies localized amplitude adjustment only to these regions, preserving the overall image quality while suppressing ringing artifacts at critical boundaries
2Object-generated harmful factors
If amplitude modification is applied at occlusion boundaries to suppress wavefront leakage, then ringing artifacts are reduced, but computational complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the hologram processing into distinct functional modules: a specifying unit that identifies occlusion regions and their boundaries, and a modifying unit that adjusts amplitude at these boundaries. This segmentation allows the system to apply complex amplitude modification only where necessary (at occlusion boundaries) rather than across the entire hologram, reducing overall computational complexity while effectively suppressing ringing artifacts
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively suppresses wavefront leakage and ringing at occlusion boundaries, enhancing the clarity and visibility of holographic projections by modifying the amplitude and phase in the specified occlusion regions.
Implementation Method 1
modifies at least one of an amplitude or a phase in one of the plurality of pieces of layer data at a boundary with the occlusion region so that leakage of the object light to an outside of the occlusion region is suppressed
Data Source
AI summary
An information processing device (20) includes: a specifying unit (23A) that specifies, from a plurality of pieces of layer data capable of expressing object light of a three-dimensional object in a stepwise manner, an occlusion region that is lost due to a foreground image of layer data of another hierarchy; and a modifying unit (23B) that modifies at least one of an amplitude or a phase in layer data at a boundary with the occlusion region that has been specified so that leakage of the object light to the outside of the occlusion region is suppressed.