Image Processing Device Superimposing Supplemental Star Patterns
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Solution Overview
Problem
Existing image processing techniques often produce insufficiently expressive decorative elements in images with high concentrations of high-luminance pixels, such as clouds on a bright day, as they fail to effectively render star patterns in areas with varying luminance.
Innovation Solution
An image processing device that selects focal pixels based on luminance variation with neighboring pixels, determines the size, shape, and luminance of supplemental images, and generates edited image data by superimposing these images around the focal pixels, enhancing expressiveness by accentuating luminance differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If star patterns are rendered in all high-luminance pixels, then the decorative effect is enhanced, but the expressiveness deteriorates in areas with high concentration of high-luminance pixels like clouds
Solution Approach 1:
The patent applies local quality by determining whether to render star patterns based on the local luminance characteristics of each pixel's neighborhood. Specifically, it compares the luminance of each pixel with its adjacent pixels to identify whether the pixel is in a high-luminance region (like clouds) or a point light source region. This local analysis enables different decorative rendering strategies in different local areas, thereby maintaining expressiveness while enhancing illumination intensity where appropriate.
2Quantity of substance
If star patterns are rendered in uniformly bright regions, then the decorative coverage is increased, but the natural appearance deteriorates
Solution Approach 1:
The patent employs parameter changes by dynamically adjusting the rendering decision based on luminance parameters. It calculates the luminance difference between each pixel and its adjacent pixels, using this parameter to determine whether the pixel qualifies for star pattern rendering. This parameter-based selection ensures that star patterns are rendered only where luminance transitions indicate point light sources or specular highlights, maintaining natural appearance while achieving appropriate decorative coverage.
Data Source
AI summary
An image processing device performs: setting a focal pixel among a plurality of pixels in an original image that is represented by original image data; setting a pixel near the focal pixel as a near pixel; acquiring a degree of difference in luminance for the focal pixel and the near pixel; determining, based on the degree of difference, at least one of: a size of a supplemental image; a shape of the supplemental image; color of the supplemental image; and luminance of the supplemental image; and generating edited image data by editing the original image data, the edited image data representing an edited image obtained by superimposing the supplemental image on the original image, the supplemental image being superimposed on an area around the focal pixel in the original image.