Dynamic Skew Correction Margin Allocation for Image Registration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image processing techniques face challenges in accurately correcting image inclination on printed matter, particularly in cases where the front and back surfaces have distortion, leading to issues with position adjustment, margin utilization, and potential image quality deterioration.
Innovation Solution
An image processing apparatus and method that calculates a third correction margin by subtracting a second correction margin from a first correction margin, allowing for effective skew correction within this range, and prioritizes skew correction based on available margins, adjusting image positions to maximize usable margins and prevent image quality deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If skew correction is performed by deforming image information to cancel distortion, then image position adjustment flexibility is improved, but image quality deteriorates
Solution Approach 1:
The patent changes the parameter of correction margin from a fixed value to a dynamically calculated value based on available margins. By calculating the third correction margin as (first correction margin - second correction margin), the system adapts the skew correction amount to the actual available space, enabling flexible position adjustment while preventing excessive deformation that would deteriorate image quality.
2Adaptability or versatility
If correction margin is increased to allow larger skew correction, then skew correction capability is improved, but printable area decreases
Solution Approach 1:
The patent applies partial action by calculating the third correction margin that represents only the portion of the first correction margin that is actually available for skew correction (after reserving the second correction margin for other distortions). This enables the system to perform skew correction to the extent necessary without unnecessarily reducing the printable area.
3Manufacturing precision
If skew correction is performed on both front and back surfaces, then front-back registration is improved, but margin utilization becomes complex
Solution Approach 1:
The patent segments the correction margin into two distinct parts: the first correction margin for skew correction and the second correction margin for other distortions. This segmentation is applied consistently to both front and back surfaces, allowing independent calculation and optimization of margin usage for each surface while maintaining overall front-back registration.
Solution Approach 2:
The patent applies local quality by allowing different correction margin allocations for front and back surfaces based on their specific requirements. The third correction margin is calculated independently for each surface, enabling optimized skew correction for each side while maintaining the overall front-back registration relationship.
Data Source
AI summary
An image processing apparatus includes: an image processing unit configured to execute image processing including skew correction that deforms an image so as to cancel distortion on the image; and a control unit configured to control the image processing on the image processing unit, wherein, in a case where a margin amount available for correcting the distortion is defined as a first correction margin amount and a margin amount used for correction other than skew correction is defined as a second correction margin amount, the control unit calculates a third correction margin amount obtained by subtracting the second correction margin amount from the first correction margin amount, and controls such that the image processing unit executes the image processing including the skew correction toward a first image and a second image such that the skew correction amount to be corrected falls within a range of the third correction margin amount.