Edge Pixel Expansion for Image Reading Device Interruption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional image reading devices face difficulties in detecting edge pixels from the outline of original documents, leading to inadequate image processing when the detected edge pixels are partially interrupted.
Innovation Solution
An image reading device with a controller that performs edge detection, expansion of edge pixels in specific ranges, and determines edge pixel interruptions, ensuring proper image processing by increasing edge pixels in the sub-scanning direction more than in the main scanning direction during the expansion process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If edge detection process is performed on image data, then edge pixels can be detected, but the detected edge pixels may be partially interrupted leading to inadequate image processing
Solution Approach 1:
The patent performs preliminary determination of whether edge pixel sequences are interrupted before executing image processing. The controller checks if detected edge pixels form continuous sequences, and only processes images when continuity is confirmed, preventing processing errors in advance
Solution Approach 2:
The system implements feedback by determining the continuity status of edge pixel sequences and using this information to control whether image processing should proceed. This feedback mechanism ensures processing reliability by preventing operations on interrupted edge data
2Measurement precision
If expansion process is performed on edge pixels, then detection accuracy can be improved, but device complexity increases
Solution Approach 1:
The expansion process is applied locally only to specific edge pixels that meet certain criteria, rather than uniformly to all edge pixels. This targeted approach improves detection accuracy where needed while minimizing unnecessary processing complexity
Solution Approach 2:
The patent applies expansion process partially to edge pixels based on determination results, expanding only the necessary portions to achieve continuity rather than performing exhaustive expansion on all edge pixels, thus balancing accuracy improvement with processing simplicity
Data Source
AI summary
There is provided an image reading device in which a controller is configured to perform detecting, by executing an edge detection process, edge pixels from image data scanned by a reading device and stored in a storage, the edge pixels being pixels obtained by reading an edge of an original document. Then, it is determined whether a sequence of the detected edge pixels in a particular direction is interrupted. When interrupted, an expansion process is executed to increase the edge pixels in a particular range in a neighborhood of the detected edge pixels of the image data. Then, a particular process is performed on the image data using the edge pixels detected from the image data after the edge pixels are increased.