Document Area Detection for Repeat Layout Specification
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Solution Overview
Problem
Users face difficulties in accurately specifying and repeating small document areas, such as business cards, when the document size detection sensor fails, leading to cumbersome operations to enlarge the desired portion within the scan image displayed on a large platen size.
Innovation Solution
An image processing apparatus that performs tilt correction and automatic detection of document areas, displaying a repeat target area specification screen with a frame indicating the repeat target area, allowing users to modify its position and size, and generates a repeat layout-processed output image for printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the entire platen is scanned when document size detection fails, then the scan image covers the full platen area, but the document area becomes too small to accurately specify on the display screen
Solution Approach 1:
The patent segments the scan image display into two stages: first displaying the entire platen area for overview, then automatically enlarging and displaying only the detected document area for precise specification. This segmentation allows the system to maintain both the full area context and the precision needed for accurate repeat target selection.
Solution Approach 2:
The system performs preliminary document area detection and automatic enlargement before the user needs to specify the repeat target. By pre-processing the image to highlight and enlarge the document area, the system eliminates the need for users to manually navigate through the entire platen image, thus improving specification accuracy before the actual task begins.
2Area of stationary object
If the entire platen scan image is displayed, then the full scan area is visible, but users need to perform troublesome operations to enlarge the desired portion for accurate specification
Solution Approach 1:
The system performs automatic document area detection and automatic enlargement without requiring user intervention. The apparatus identifies the document area itself and enlarges it automatically, making the system self-serving rather than requiring the user to manually perform enlargement operations.
Solution Approach 2:
The system pre-performs the enlargement operation that would otherwise be required from the user. By detecting the document area and automatically enlarging it before the specification step, the system eliminates the need for users to perform troublesome manual enlargement operations.
3Measurement precision
If manual enlargement operations are required to specify small document areas, then users can achieve precise specification, but the operation process becomes complicated and time-consuming
Solution Approach 1:
The system automatically detects and enlarges the document area without requiring user operations. This self-service approach eliminates the time users would spend on manual enlargement while maintaining or improving specification accuracy through automated detection algorithms.
Solution Approach 2:
The system performs the time-consuming enlargement operation in advance, before the user needs to specify the repeat target. By pre-enlarging the document area automatically, the system eliminates the time users would otherwise spend on manual operations while ensuring accurate specification is achieved.
Data Source
AI summary
A tilt-corrected document image is obtained by performing image analysis processing on a scan image to detect a document area and performing extraction and tilt correction of a document image based on the detected document area. The tilt-corrected document image and a frame indicating a repeat target area are displayed in a repeat target area specification screen. The initially displayed frame indicates an area corresponding to the tilt-corrected document image. A position of the displayed frame can be changed based on a user's instruction on the screen. A repeat layout-processed output image is generated by repeatedly laying out an image of the repeat target area determined based on the frame set on the screen within a specified sheet size, and print processing is made executable.