Stereoscopic Image Luminance Adjustment for 3D Display Comfort
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Solution Overview
Problem
Current three-dimensional display technologies, such as 3D videos, often cause user discomfort like headaches and fatigue due to discrepancies between visual and sensory information, as stereoscopic cameras do not account for human anatomy, leading to unnatural luminance distribution between images for each eye.
Innovation Solution
A method that modifies the luminance of pairs of images based on the anatomical details of the human face and the angle of incidence of light, simulating real-life lighting conditions by analyzing the luminance distribution and histogram to adjust luminance values accordingly, ensuring that each eye receives different luminance values as it would in real life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If stereoscopic cameras are used to capture three-dimensional images, then three-dimensional visual content can be provided to users, but the luminance distribution between images for each eye becomes unnatural because cameras do not account for human anatomy
Solution Approach 1:
The patent applies local quality by differentiating luminance processing between left and right eye images based on anatomical factors. Specifically, the nose shadow effect is applied selectively to one eye's image depending on light direction, and pupil size differences are compensated differently for each eye. This localized adjustment to specific regions and channels resolves the contradiction by making luminance distribution anatomically accurate while preserving 3D visual content.
Solution Approach 2:
The patent implements asymmetry by recognizing that human eyes receive different luminance values due to anatomical features like the nose and varying pupil sizes. The processing deliberately creates asymmetric luminance adjustments between left and right images - for example, darkening one image more than the other based on nose shadow direction - rather than treating both eyes equally. This asymmetric processing resolves the technical contradiction by matching natural human visual experience.
2Device complexity
If uniform luminance is provided to both eyes in stereoscopic images, then image processing is simplified, but user discomfort such as headaches and fatigue occurs due to discrepancy between visual and sensory information
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting luminance values based on detected light direction and anatomical parameters. The system changes the luminance parameter selectively for left or right images depending on which eye should receive more or less light based on the virtual light source position. This parameter adjustment resolves the contradiction by introducing necessary complexity to eliminate harmful effects while maintaining processing efficiency through rule-based adjustments.
3Manufacturing precision
If anatomical details of the human face are considered in image modification, then realism of three-dimensional visuals is enhanced, but processing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-defining anatomical parameters such as nose position, pupil size relationships, and light interaction rules before actual image processing. The system establishes virtual light sources and pre-calculates expected shadow patterns and luminance adjustments based on these fixed anatomical models. This preliminary setup resolves the contradiction by creating a reusable framework that enhances realism without requiring complex real-time calculations during image processing.
Data Source
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AI summary
The present invention provides a method for modifying pairs of images- (101 ) for improved three-dimensional displaying,, the method comprising analyzing the images (523, 524) for detecting tie angle of incidence of the illuminating light (211, 311, 525, 526, 527, 528) in the images (523, 524), and modifying the luminance values of at least a section of at least one of the images (523, 524) of each pair based on the angle of incidence and anatomical details of the human face. Further, the present invention provides a respective apparatus (100).