Hologram Display Phase Grouping for Resolution and Depth Control
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Solution Overview
Problem
Conventional CGH techniques face a trade-off between image resolution and depth of field, making it difficult to improve user experience.
Innovation Solution
An information processing device that groups pixels into different groups based on their requirements for resolution and depth of field, and applies phase patterns with varying phase differences to generate hologram data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a random phase is added to the input image, then robustness against artifacts and dust is improved, but speckle noise is induced on the reproduction field
Solution Approach 1:
The patent changes the phase distribution parameters by dividing pixels into multiple groups and allocating different phase patterns to each group. This parameter modification allows the system to achieve robustness against artifacts while suppressing speckle noise through controlled phase variation across groups rather than uniform random phase addition.
Solution Approach 2:
The patent applies local quality by assigning different phase characteristics to different pixel groups. Each group receives a phase pattern tailored to its specific requirements, allowing localized optimization of both robustness and speckle noise suppression rather than applying a uniform phase transformation across the entire image.
2Manufacturing precision
If a random phase is not used, then image quality is improved without speckle noise, but depth of field becomes deep and light beam becomes thin
Solution Approach 1:
The patent modifies the phase distribution parameters by implementing group-based phase allocation with controlled phase differences. This parameter change enables the system to maintain high image quality while adjusting the depth of field characteristics through the phase difference parameter, achieving a balance between image quality and depth perception.
Solution Approach 2:
The patent introduces dynamics by making the phase distribution adjustable and adaptive. The phase difference parameter can be modified to dynamically control the depth of field, allowing the system to transition between different depth perception modes while maintaining image quality, rather than being fixed in a static phase configuration.
3Measurement precision
If conventional techniques are used, then either poor image resolution or deep depth of field is achieved, but it is difficult to improve user experience
Solution Approach 1:
The patent applies local quality by assigning different phase patterns to different pixel groups based on their spatial locations and imaging requirements. This allows regions requiring high resolution to receive appropriate phase treatment while other regions can be optimized for depth perception, thereby improving overall user experience through localized optimization.
Solution Approach 2:
The patent changes the phase distribution parameters by implementing group-based allocation with adjustable phase differences. This parameter modification enables flexible control over the trade-off between resolution and depth of field, allowing the system to optimize for user experience by adjusting parameters according to different viewing conditions and requirements.
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
Enables simultaneous improvement in image resolution and depth of field, enhancing user experience by allowing clear and natural depth blur reproduction.
Implementation Method 1
a phase adjustment unit that allocates, to the plurality of pixels, a phase pattern having a phase difference different for each of the one or more groups
Data Source
AI summary
User experience is improved. An information processing device includes: a grouping unit (21) that groups a plurality of pixels configuring one or more objects included in one piece of image data into one or more groups; a phase adjustment unit (22) that allocates, to the plurality of pixels, a phase pattern having a phase difference different for each of the one or more groups; and a calculation unit (30) that generates hologram data from the image data to which the phase pattern is added.