Image Processing Apparatus for Handwritten Annotation Deletion
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Solution Overview
Problem
Existing image forming apparatuses face challenges in quickly and accurately deleting hand-written memoranda, including characters and annotation lines, from source images, often requiring extensive processing time and failing to completely remove annotations like underlines and enclosures.
Innovation Solution
An image processing apparatus comprising a storage device, character region identifier, image acquirer, annotation line identifier, and generator that identifies character regions, detects annotation lines, and generates a modified image by deleting these elements from the source image, improving deletion accuracy and speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the image forming apparatus decides whether each character image is hand-written individually, then the deletion accuracy of hand-written characters is improved, but the processing time increases significantly
Solution Approach 1:
The patent segments the image processing into distinct functional modules: character region identification, annotation line detection, and selective deletion. By dividing the processing task into independent segments that can be executed in a optimized sequence, the system achieves both high accuracy in identifying hand-written elements and improved processing efficiency through targeted operations on specific regions rather than the entire image.
2Reliability
If the image forming apparatus processes all character images to identify hand-written characters, then the deletion completeness is improved, but the processing speed decreases
Solution Approach 1:
The patent applies local quality by focusing processing resources on specific regions where hand-written annotations are likely to occur. The character region identifier and annotation line identifier operate selectively on relevant portions of the image, applying different processing intensities to different areas. This ensures complete deletion of hand-written elements in critical regions while maintaining high processing speed overall.
3Measurement precision
If the image forming apparatus deletes all detected hand-written elements, then the deletion accuracy is improved, but annotation lines such as underlines and enclosures remain undelated
Solution Approach 1:
The patent implements universality by designing the annotation line identifier to detect multiple types of annotations (underlines, enclosures, and other markup elements) using a unified detection mechanism. The system identifies various annotation line types and applies appropriate deletion strategies for each, ensuring comprehensive removal of all hand-written annotation elements while maintaining a flexible, adaptable processing framework.
Data Source
AI summary
An image forming apparatus includes a storage device for storing a source image, a character region identifier that identifies a character region in the source image, an image acquirer that acquires an image of the character region from the source image, an annotation line identifier that detects an annotation lines in the character region, and identifies a position of the annotation line, and a generator that generates, from the source image, a modified image not containing an image located outside the character region in the source image, and in which the annotation lines have been deleted from the image of the character region.