Printing Apparatus Pattern Correction for Fabric Alignment
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Solution Overview
Problem
Existing printing technologies face challenges in accurately determining the four corners of a pattern region on a fabric, leading to increased computational burden and processing time when generating printing data, as they rely on limited information such as center coordinates for pattern extraction and interpolation.
Innovation Solution
A printing apparatus and method that includes a pattern correction unit to transform first image data into corrected data with a center made up of four corners, allowing for precise extraction of pattern regions from second image data, and a printing image generation unit to arrange third image data to match the extracted pattern regions' centers, reducing the need for interpolation and enhancing processing speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If pattern extraction is performed using only center coordinates from captured images, then the extraction process is simplified, but the manufacturing precision of determining pattern region corners deteriorates
Solution Approach 1:
The pattern image data is divided into multiple divided pieces, each representing a portion of the complete pattern. By comparing divided pieces from the captured image with corresponding divided pieces from the pattern image data, the system can determine the positions of multiple corners of pattern regions independently, achieving high precision without requiring complex interpolation operations.
2Manufacturing precision
If interpolation operations are performed to determine four corners of pattern regions, then the manufacturing precision of pattern region determination is improved, but the productivity deteriorates due to increased computational burden
Solution Approach 1:
The invention extracts and utilizes the center coordinates of pattern regions directly from image comparison results. By dividing the pattern image data and comparing corresponding divided pieces, the system extracts the positions of all four corners of pattern regions directly from the comparison results, eliminating the need for subsequent interpolation operations and reducing computational burden while maintaining high precision.
3Measurement precision
If the pattern image data is divided into multiple divided pieces for comparison, then the measurement precision of pattern region extraction is improved, but the device complexity increases
Solution Approach 1:
The pattern image data is divided into multiple divided pieces, each representing a portion of the complete pattern. By comparing divided pieces from the captured image with corresponding divided pieces from the pattern image data, the system can determine the positions of multiple corners of pattern regions independently, achieving high precision without requiring complex interpolation operations.
Data Source
AI summary
A printing apparatus includes a pattern correction unit configured to change a mutual positional relationship among a plurality of divided pieces of first image data obtained by dividing first image data representing a first pattern formed in a fabric to generate corrected first image data having a center made up of four corners of the first image data, a pattern extracting unit configured to compare the corrected first image data with second image data generated by imaging the fabric to extract a pattern region corresponding to a second pattern represented by the corrected first image data from the second image data, a printing image generation unit configured to arrange third image data representing an image to be printed overlaid on the first pattern so as to match a region having centers of the pattern regions as four corners to generate printing image data, and a printing control unit.