Image Processing Apparatus Dynamic Color Removal
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Solution Overview
Problem
Existing image processing methods fail to effectively remove specified colors from image data, especially when colors are represented using process colors, leading to incomplete removal and unintended color retention.
Innovation Solution
An image processing apparatus that specifies a color, sets a hue range for removal, expands the removal range based on image data features, and removes the color within that expanded range, using a three-dimensional lookup table to convert specified colors to white pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If specified color removal is performed using conventional methods, then the removal range is limited, but colors represented by process colors remain without being removed
Solution Approach 1:
The patent applies dynamics by making the removal range adjustable and adaptive. The system dynamically determines the removal range based on the specified color and image characteristics, allowing the range to expand or contract as needed. This enables complete removal of process colors while maintaining control over the removal scope.
Solution Approach 2:
The patent changes parameters by introducing a removal range parameter that can be adjusted based on image data. The system modifies the removal range parameter dynamically to accommodate different color representations, particularly process colors, ensuring complete removal while avoiding unintended consequences.
2Reliability
If the removal range is widened to remove all process colors, then complete color removal is achieved, but colors that should not be removed may be inadvertently removed
Solution Approach 1:
The patent implements feedback by using image data to adjust the removal range. The system processes image data to determine appropriate removal parameters, creating a feedback loop where the output of one process (image processing) becomes the input for another (parameter determination). This ensures accurate color removal while preventing unintended consequences.
Solution Approach 2:
The system dynamically adjusts the removal range based on real-time image analysis. The removal parameters are not fixed but adapt to the specific characteristics of the input image, allowing precise control over which colors are removed and which are preserved.
3Ease of manufacture
If a fixed removal range is used for specified color removal, then the process is simple, but it cannot handle different color representations accurately
Solution Approach 1:
The patent applies preliminary action by processing image data before determining the removal parameters. The system performs preliminary image analysis to understand the characteristics of the input image, which then guides the determination of appropriate removal ranges. This preliminary processing enables effective color removal while maintaining operational simplicity.
Data Source
AI summary
In a document represented by CMYK process colors, a color that a user wishes to remove is prevented from remaining without being removed by specified color removal, and even a color that the user does not wish to remove by rights is prevented from being removed.