Image Processing Sharpness Control for Resolution Conversion
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Solution Overview
Problem
Conventional image processing methods fail to effectively control the stereoscopic effect during resolution conversion, leading to a deterioration in sharpness that affects the perceived depth and anteroposterior relationship in images.
Innovation Solution
An image processing apparatus and method that includes a resolution conversion unit, a storage unit for stereoscopic effect parameters, and a processing unit to control sharpness based on distance information and resolution conversion rates, ensuring that the sharpness is adjusted differently for varying distances to maintain the stereoscopic effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If resolution conversion processing is applied to image data, then the resolution is improved, but the sharpness deteriorates
Solution Approach 1:
The patent applies local quality by differentiating sharpness control based on distance information. The processing unit adjusts sharpness parameters differently for near objects and far objects, applying stronger sharpness enhancement to distant regions where resolution conversion causes more noticeable degradation, while maintaining natural appearance in near regions.
Solution Approach 2:
The patent changes parameters by dynamically adjusting sharpness control parameters based on distance information and resolution conversion rates. The storage unit holds multiple sharpness parameters corresponding to different distance ranges, and the processing unit selects appropriate parameters to compensate for resolution conversion effects in a distance-dependent manner.
2Measurement precision
If resolution conversion processing is applied to image data, then the resolution is improved, but the stereoscopic effect deteriorates
Solution Approach 1:
The patent preserves the stereoscopic effect by applying local quality control based on distance information. The processing unit maintains appropriate sharpness differences between near and far objects in different depth zones, ensuring that the relative sharpness relationships that create stereoscopic perception are preserved after resolution conversion.
Solution Approach 2:
The patent uses feedback by utilizing distance information about objects in the scene to guide sharpness adjustment. The processing unit receives distance information, compares it with stored sharpness parameters for different distance ranges, and applies appropriate sharpness control to maintain the stereoscopic effect throughout the image.
Data Source
AI summary
A resolution conversion of image data of a photographic image is performed, and based on information related to a distance from a focal plane in the photographic image and the resolution conversion, processing to control the sharpness of an image that the image data resulting from the resolution conversion represents is performed.