Hologram Image Data Processing via Fourier Calculation and Pixel Encoding

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Solution Overview

Problem

Current methods for generating 3D hologram images, such as glasses-type and non-glasses-type methods, face limitations in the number of viewpoints and cause viewer fatigue due to inconsistencies between perceived depth and eye focus, while commercial holographic display techniques require extensive computations for image processing.

Innovation Solution

A method and apparatus for processing hologram image data that involves receiving input image data, reading a header with parameters like depth, scale, and gamma information, performing Fourier calculations, and pixel encoding to optimize hologram image generation, reducing computational load and improving image quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If computer-generated hologram (CGH) techniques are used to provide full parallax and consistent depth perception, then hologram image quality is improved, but the number of computations and computation time increase significantly

Engineering Contradiction:

Improvehologram image qualityVSAvoidcomputation time

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The patent segments the hologram generation process into distinct computational stages: performing a first Fourier calculation based on pupil-retina distance, then performing a second Fourier calculation based on display panel-pupil distance. This segmentation allows each calculation stage to be optimized independently, reducing the overall computational burden while maintaining image quality.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies parameter changes by using depth information to dynamically adjust focus terms and calculation parameters during the Fourier calculations. By changing computational parameters based on depth layers, the system optimizes the balance between computation time and hologram image quality without requiring exhaustive calculations for all possible depths.

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If traditional 3D display methods are used, then the implementation is simpler, but the number of viewpoints is limited due to binocular parallax

Engineering Contradiction:

Improveimplementation simplicityVSAvoidnumber of viewpoints

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent transitions from 2D image processing to 3D holographic rendering by performing Fourier calculations that simulate light propagation in three-dimensional space. This dimensional transformation enables full parallax and multiple viewpoints without requiring complex mechanical systems, as the third dimension is achieved through computational optical path simulation.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Device complexity

If traditional 3D display methods are used, then the implementation is simpler, but viewers experience fatigue due to inconsistency between perceived depth and eye focus

Engineering Contradiction:

Improveimplementation simplicityVSAvoidviewer fatigue

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces mechanical optical systems with computational algorithms that simulate light propagation and focus. By using Fourier calculations to model optical paths and depth-dependent focus terms, the system achieves consistent depth perception and eye focus without complex mechanical components, thereby eliminating viewer fatigue while maintaining implementation feasibility.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

This approach enhances the quality and efficiency of hologram image processing by optimizing computations and dynamically adjusting parameters for improved depth perception and image resolution, reducing viewer fatigue and increasing the number of viewpoints.

Implementation Method 1

the spatial light modulator forms a hologram pattern and diffracts light according to an input CGH signal, thereby generating a 3D image

Methodology Applied

Scientific EffectDiffraction: Diffraction

Implementation Method 2

generating hologram data configured to display a hologram image by performing a Fourier calculation and pixel encoding on the input image data

Methodology Applied

Scientific EffectFourier transformation:

Data Source

PatentUS11561508B2Method and apparatus for processing hologram image data

Publication Date: 2023.01.24 SAMSUNG ELECTRONICS CO LTD

AI summary

A method and apparatus for processing hologram image data capable of optimizing image quality of a hologram image are provided. The image processing method includes receiving input image data, reading a header included at a predetermined location in the input image data, and generating hologram data configured to display a hologram image by performing a Fourier calculation and pixel encoding on the input image data based on at least one parameter recorded in the header, wherein the at least one parameter recorded in the header includes at least one of depth information, scale information, and gamma information.