Form Processing Device Using Pre-calculated Transform Coefficients
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Solution Overview
Problem
Existing form processing systems face inefficiencies in identifying and judging input forms due to the need for time-consuming characteristic extraction, alignment, and transform coefficient calculation across multiple registered forms, which slows down the processing speed and accuracy.
Innovation Solution
A processing device that stores difference information between judgment and representative frames, allowing for efficient form identification by calculating and utilizing transform coefficients to align and compare input forms with pre-registered forms, thereby reducing the need for repeated characteristic checks and alignment processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If characteristic extraction, alignment, and transform coefficient calculation are performed for each input form, then form identification accuracy is improved, but processing time increases
Solution Approach 1:
The patent pre-calculates and stores transform coefficients between representative frames of different form types during a registration phase. When an input form arrives, the system only needs to compare it against stored difference information rather than performing full characteristic extraction and alignment, thus maintaining accuracy while reducing processing time
Solution Approach 2:
The patent extracts and stores only the essential difference information between judgment use frames and representative frames, rather than storing complete form characteristics. This selective extraction reduces the amount of data to be processed while preserving the key features needed for accurate form identification
2Reliability
If multiple registered forms are compared using full characteristic checks, then form identification reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the form identification process into two phases: a registration phase where transform coefficients are pre-calculated and stored, and a judgment phase where only simple comparisons are performed. This segmentation reduces the complexity of the judgment process while maintaining reliability through the use of pre-computed reference data
Solution Approach 2:
The patent introduces transform coefficients as an intermediary element that mediates between the input form and the registered forms. These coefficients serve as a bridge that simplifies the comparison process, reducing the need for complex real-time calculations while ensuring reliable form identification
Data Source
AI summary
A processing device includes: a memory that stores first difference information representing a difference between a judgment use frame in reference information and a representative frame in association with the reference information; and a judging unit that, based on second difference information representing a difference between a judgment frame in input information and the representative frame and on the first difference information stored in the memory, judges the input information by use of the reference information.