Image Forming Device Data Loss Detection via Superimposed Pattern
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Solution Overview
Problem
Existing image forming devices cannot detect data loss in image data, particularly when there is no structural loss in the file but loss occurs due to reading errors or when documents with sticky notes are scanned, leading to unsatisfactory output.
Innovation Solution
An image forming device with a scanner and controller that generates and superimposes a loss detection image on a document image, allowing the controller to determine data loss by checking the arrangement of a user-input character string according to a prescribed rule, and notifies the user of any data loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a preview of image data is displayed on a display unit, then the user can check the contents and quality of the image, but data loss in the image data cannot be detected
Solution Approach 1:
A loss detection image containing a character string arranged according to a prescribed rule is introduced as an intermediary element. This loss detection image is superimposed on the document image, and its integrity serves as a mediator to detect data loss in the original image data without requiring complex direct analysis of the entire image
Solution Approach 2:
The invention changes the parameter being monitored from the entire image data to a specific characteristic parameter - the arrangement state of the character string in the loss detection image. By monitoring this specific parameter, data loss detection becomes feasible without analyzing the complete image dataset
2Reliability
If image data is printed without detection, then printing speed is maintained, but unsatisfactory output occurs when data loss is present
Solution Approach 1:
The loss detection image is superimposed on the document image before printing, and data loss is detected in advance by checking the character string arrangement. This preliminary detection action prevents unsatisfactory printing output while maintaining efficient printing processes
3Measurement precision
If the entire image data is analyzed for data loss, then comprehensive detection is achieved, but processing time and complexity increase significantly
Solution Approach 1:
The essential detection target - the character string in the loss detection image - is extracted from the entire image data. By focusing analysis only on this extracted element rather than the complete image, detection accuracy is maintained while processing time is significantly reduced
Data Source
AI summary
An image forming device includes a scanner for scanning a document image, and a controller for controlling the image forming device. The controller determines whether or not a loss detection image for determining presence or absence of data loss has been superimposed on a first document image scanned by the scanner, and when it is determined that the loss detection image has been superimposed on the first document image, extracts the loss detection image from the first document image and determines presence or absence of data loss in the extracted loss detection image, and notifies a user of presence or absence of data loss based on a result of the determination of presence or absence of data loss in the extracted loss detection image.