Image Processing Device Luminance Control for Region Blackout Prevention
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Solution Overview
Problem
Existing image processing technologies fail to maintain appropriate luminance in cut-out image regions, leading to 'blackout' or 'whiteout' issues when there are significant luminance deviations between regions, resulting in poor gradation expression.
Innovation Solution
An image processing device and method that cuts out multiple image regions from an input image, calculates luminance information for each region, and performs luminance changes based on attention point regions to maintain appropriate luminance, preventing blackout or whiteout by using a luminance change coefficient table and crossfading techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If gradation change is performed on the entire input image based on the gradation range of all cut-out image regions, then the overall gradation of the image is enhanced, but the luminance of individual image regions becomes inappropriate, causing blackout or whiteout
Solution Approach 1:
The patent divides the image processing into two levels: first, the input image is segmented into multiple image regions (first image region and second image region); second, each region is further segmented into attention point regions for luminance calculation. This multi-level segmentation allows different luminance adjustments to be applied to different regions, preventing blackout or whiteout while maintaining overall gradation enhancement.
Solution Approach 2:
The patent applies local quality by calculating luminance information specifically from attention point regions within each image region, rather than treating all regions uniformly. The luminance change coefficient is determined based on the luminance of attention points in the target image region, allowing each region to have its luminance adjusted according to its local characteristics, thus preventing blackout or whiteout in specific regions.
2Productivity
If luminance change is performed without considering attention point regions, then processing is simpler and faster, but sudden luminance changes occur during transitions between image regions
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing luminance information of attention point regions for each image region before the actual image switching occurs. The luminance change coefficient is determined in advance based on the luminance of attention points, which allows for smooth luminance transitions when switching between image regions, preventing sudden luminance changes while maintaining processing efficiency.
Solution Approach 2:
The patent uses attention point regions as intermediaries to mediate between different image regions. By calculating luminance information from these intermediary attention points and using them to determine luminance change coefficients, the patent ensures smooth transitions when switching between image regions, preventing sudden luminance changes while maintaining processing efficiency.
3Device complexity
If multiple image regions with different luminance characteristics are displayed without individual luminance adjustment, then the device complexity is reduced, but the image quality deteriorates due to blackout or whiteout in regions with extreme luminance
Solution Approach 1:
The patent applies self-service by enabling each image region to automatically adjust its own luminance based on the luminance characteristics of its attention point region. The luminance change coefficient is determined autonomously for each region based on its own luminance information, without requiring complex external control, thus maintaining image quality consistency while avoiding excessive device complexity.
Data Source
AI summary
An image processing device is provided. The image processing devices includes an input part configured to input an input image; a cutout part configured to cut out a plurality of image regions from the input image input by the input part; and a luminance change part configured to execute luminance change of each of the image regions cut out by the cutout part.