Ledger Sheet Recognition Using Dual Definition Information
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Solution Overview
Problem
Existing ledger sheet recognition techniques face challenges in accurately identifying item names and their relative positions on diverse or unknown layouts, leading to difficulties in extracting values from ledger sheet images.
Innovation Solution
An information processing apparatus and method that utilize both general-purpose and user-specific ledger sheet definition information to extract items and values from ledger sheet images, associating character strings with their positions, thereby improving recognition accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single type of ledger sheet definition information is used, then the device complexity is reduced, but the recognition accuracy deteriorates due to inability to handle diverse layouts
Solution Approach 1:
The patent segments ledger sheet definition information into multiple types: first ledger sheet definition information for general-purpose layouts and second ledger sheet definition information for user-specific layouts. This segmentation allows the system to handle diverse layouts accurately while maintaining manageable complexity through organized information categorization.
Solution Approach 2:
The patent implements a multi-functional definition information management system that can universally handle both general-purpose ledger sheets and user-specific variations. The system selectively applies appropriate definition types based on the ledger sheet being processed, enabling one system to serve multiple layout requirements without requiring separate specialized systems.
2Measurement precision
If multiple types of definition information are used, then the recognition accuracy is improved, but the information processing complexity increases
Solution Approach 1:
The patent implements a dynamic selection mechanism that adaptively chooses which ledger sheet definition information to apply based on the specific processing needs. The system can switch between first and second definition information types depending on whether the ledger sheet requires general-purpose or user-specific layout handling, optimizing information processing efficiency.
Solution Approach 2:
The patent applies different definition information qualities to different processing contexts: using comprehensive second ledger sheet definition information for user-specific layouts requiring high precision, and simpler first ledger sheet definition information for general-purpose layouts. This local quality differentiation optimizes the balance between recognition accuracy and processing complexity for each specific case.
Data Source
AI summary
An information processing apparatus includes processing circuitry. The circuitry acquires first ledger sheet definition information and second ledger sheet definition information from a memory. The first ledger sheet definition information defines relative positions of an item and a value of the item in a ledger sheet. The second ledger sheet definition information defines relative positions of an item and a value of the item in a ledger sheet unique to a user. Based on at least one of the first ledger sheet definition information and the second ledger sheet definition information, the circuitry extracts an item and a value of the item from reading result information that associates a character string read from a ledger sheet image with information representing a position of the character string, and the circuitry outputs the extracted item and value of the item as a recognition result.