Reduced Image Heading Extraction for Document Preview
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Solution Overview
Problem
Existing image processing systems face challenges in efficiently displaying and managing preview images of multi-page documents, particularly when the number of pages exceeds the display capacity, leading to user inconvenience in selecting pages to print.
Innovation Solution
An image processing apparatus that generates and displays a reduced image of the heading portion of each page, allowing for easier page selection by extracting distinguishable rows as headings from vertically or horizontally written document data, and displaying these as preview images on a limited display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If full-page preview images are displayed for multi-page documents, then users can see complete page content, but the display area is quickly exhausted requiring frequent screen switching
Solution Approach 1:
The patent extracts only the heading portion from each page instead of displaying the entire page. The reduced image generation unit identifies and extracts the heading row (which contains distinguishable text different from other rows) and generates a reduced image containing only this extracted portion, thereby reducing display area consumption while preserving essential page identification information.
2Ease of operation
If reduced images are generated to save display area, then more preview images fit on screen, but distinguishing important content becomes difficult
Solution Approach 1:
The patent applies local quality by selectively processing different parts of the page with different levels of detail. The heading portion is extracted and preserved in full detail in the reduced image, while the rest of the page content is omitted. This ensures that the most important identifying information (the heading) maintains high quality and distinguishability in the reduced preview image.
3Loss of information
If entire pages are displayed as previews, then complete content is visible, but processing and display time increase
Solution Approach 1:
The patent extracts only the essential heading portion from each page to generate reduced images. The reduced image generation unit identifies the heading row and generates compact reduced images containing only this extracted content, dramatically reducing the data processing volume and generation time compared to processing entire pages, while still providing sufficient information for page identification.
Data Source
AI summary
Provided is an image processing apparatus including a memory that stores information, and a reduced image generation unit that extracts a row including a distinguishable part from other rows as a heading from a vertically long range from top to bottom on a left end side when document data is horizontally written, extracts a row including a distinguishable part from other rows as a heading from a horizontally long range from a right end to a left end on an upper end side when the document data is vertically written, and generates a portion including the heading as a reduced image.