Image Processing Apparatus Smoothing Concavo-Convex Signals for Color Reproducibility
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Solution Overview
Problem
Existing methods for forming concavo-convex and color objects, such as those using ink jet printing systems, face challenges in achieving desirable color reproduction due to variations in concavo-convex shapes, which affect the color reproduction range and gamut.
Innovation Solution
An image processing apparatus that obtains concavo-convex and color data, determines correction areas where color reproducibility is decreased, and corrects the concavo-convex data by smoothing the signals in those areas to enhance color reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If color is formed on concavo-convex surface, then stereoscopic effects and texture are represented, but color reproduction range varies due to concavo-convex shape variations
Solution Approach 1:
The patent applies different processing strategies to different regions of the concavo-convex surface. By calculating color reproducibility for each pixel based on its local concavo-convex characteristics (slope, curvature), the system identifies regions where color reproduction deteriorates and applies selective smoothing only to those areas, preserving texture in regions where color reproduction is acceptable.
Solution Approach 2:
The patent changes the parameters of the concavo-convex signal in correction areas by applying smoothing processing. This modifies the slope and curvature parameters locally in regions where color reproduction is problematic, thereby improving color consistency without fundamentally altering the overall concavo-convex structure and texture.
2Ease of manufacture
If same amount of color ink is printed in same pattern, then printing process is simplified, but color reproduction range expands or narrowes due to concavo-convex variations
Solution Approach 1:
The patent performs preliminary analysis and correction of the concavo-convex signal before the actual color printing process. By pre-identifying correction areas where color reproduction would deteriorate and pre-applying smoothing to those regions, the system ensures consistent color reproduction without requiring complex real-time adjustments during printing.
Solution Approach 2:
The patent uses color reproducibility calculations as feedback to determine which areas require correction. By evaluating how the concavo-convex shape affects color reproduction in each region and using this information to guide selective smoothing, the system optimizes color consistency based on actual reproduction characteristics rather than applying uniform processing.
3Manufacturing precision
If concavo-convex signal is smoothed in correction areas, then color reproducibility is improved, but texture reproduction may be reduced
Solution Approach 1:
The patent applies smoothing selectively only to correction areas where color reproduction deteriorates, rather than uniformly across the entire image. This localized approach preserves texture details in non-correction areas while improving color consistency in problematic regions, balancing both color accuracy and texture reproduction.
Data Source
AI summary
An image processing apparatus is used for processing of reproducing a target object by applying color onto a structure formed based on a concavo-convex signal indicating a shape of the target object. The image processing apparatus determines, based on concavo-convex data, color data, and color reproducibility, a correction area which is an area in which color reproduction represented by the color data is decreased according to the shape represented by the concavo-convex data. The image processing apparatus corrects the concavo-convex data by smoothing the concavo-convex signal corresponding to the determined correction area.