Holographic Image Processing Brightness Normalization
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Solution Overview
Problem
Current methods for processing computer-generated holograms (CGH) often result in eye fatigue and brightness inconsistencies due to excessive differences in amplitude values, leading to suboptimal hologram image quality and viewer experience.
Innovation Solution
A method involving frequency conversion of input image data to generate a complex array, encoding amplitude and phase information, sorting and normalizing per-pixel amplitude values using reference values to stabilize brightness, and converting these values into integers for generating a CGH image, thereby controlling and enhancing image brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional CGH processing methods are used, then hologram generation is achieved, but brightness inconsistencies and excessive amplitude differences occur leading to eye fatigue
Solution Approach 1:
The patent applies parameter changes by normalizing the real number values of per-pixel amplitude information based on a reference value (preset or dynamically determined). This normalization process adjusts the amplitude parameters to fall within a specific range, thereby controlling brightness consistency and eliminating excessive amplitude differences that cause eye fatigue during hologram display
2Stability of the object's composition
If amplitude values are not normalized, then processing speed is maintained, but brightness differences between frames become excessive
Solution Approach 1:
The patent implements preliminary action by determining a reference value for amplitude normalization in advance (either as a preset value or by dynamically analyzing the image data beforehand). This pre-determined reference value is then used to normalize all per-pixel amplitude information, ensuring brightness stability across frames while maintaining processing efficiency through a single-pass normalization operation
Data Source
AI summary
Provided are a method and device for processing a holographic image. The method includes generating a complex array by performing frequency conversion of input image data on a pixel-by-pixel basis, encoding per-pixel amplitude information and per-pixel phase information represented by complex numbers included in the complex array into real number values, sorting the real number values of the per-pixel amplitudes according to a magnitude and setting a prescribed-order number from among the real number values of the per-pixel amplitudes to a reference value, and normalizing the real number values of the per-pixel amplitudes based on the reference value.