Image Processing Apparatus for Accurate Erecting Direction Determination
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Solution Overview
Problem
The accuracy of determining the erecting direction of an image is decreased when character recognition is performed only in a predetermined fixed area without considering the results of layout analysis, and when characters relevant for the determination are not included in this area.
Innovation Solution
An image processing apparatus that includes a layout analyzing part, an extraction part, a character recognizing part, and an erecting direction deciding part, which performs layout analysis, extracts diagrammatic representations, executes character recognition in areas with a high probability of containing character strings related to the diagrammatic representations, and determines the erecting direction based on the recognition results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If character recognition is performed only in a predetermined fixed area, then processing speed is improved, but determination accuracy deteriorates
Solution Approach 1:
The patent applies local quality by dividing the image into different functional areas: a first area for erection direction determination and a second area for character recognition. The character recognition area is dynamically adjusted based on the detected erection direction, ensuring that recognition operations are performed in the most appropriate local region rather than a fixed predetermined area. This resolves the contradiction by optimizing both processing efficiency (through targeted local recognition) and determination accuracy (through adaptive area selection).
Solution Approach 2:
The patent implements dynamics by making the character recognition area adaptive rather than fixed. The system first performs erection direction determination, then uses this information to dynamically define the optimal area for subsequent character recognition. This dynamic adjustment ensures that the recognition area always corresponds to the actual character location, improving both processing efficiency and accuracy while resolving the trade-off between speed and precision.
2Device complexity
If character recognition is performed in a predetermined fixed area without layout analysis, then device complexity is reduced, but reliability of determination deteriorates
Solution Approach 1:
The patent applies segmentation by separating the image processing into distinct functional segments: layout analysis for erection direction determination, and character recognition in a separately defined area. This segmentation allows each component to be optimized independently while working together to improve overall reliability. The first area is dedicated to determining orientation, while the second area handles character recognition, ensuring that both functions can be performed reliably without interfering with each other.
Solution Approach 2:
The patent implements preliminary action by performing erection direction determination before character recognition. The layout analysis and erection direction detection are completed first, and based on these results, the optimal character recognition area is defined. This preliminary action ensures that subsequent character recognition is performed in the correct area, significantly improving the reliability of the overall system while maintaining manageable complexity through a clear sequential process.
Data Source
AI summary
An image processing apparatus includes a layout analyzing part that executes layout analysis for image data, an extraction part that extracts a diagrammatic representation from the image data by using a result of the layout analysis, a character recognizing part that executes character recognition for a partial area having a high probability of presence of a character string in a relationship with the extracted diagrammatic representation, and an erecting direction deciding part that decides an erecting direction of the image data by using a result of the character recognition.