Composite Symbol Reading Device for Rapid Authentication
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Solution Overview
Problem
Existing methods for reading composite symbols, which change appearance with viewing angle, are time-consuming due to the need to capture and read individual images of multiple symbols sequentially.
Innovation Solution
A reading device and method that captures a moving image while changing the angle relative to the composite symbol, detects symbols from the moving image, and determines authenticity based on the sequential order, switching transition, or emergence ratio of the symbols, allowing for quick and easy reading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual images of multiple symbols are captured and read sequentially by changing the position of the reading device, then all symbols in the composite symbol can be read, but the reading process becomes time-consuming
Solution Approach 1:
The patent captures a moving image that preliminarily contains all symbols in the composite symbol within a single continuous shot. By pre-capturing the entire sequence of symbols appearing at different viewing angles in one moving image, the system eliminates the need for multiple separate capture operations, thereby reducing reading time while maintaining the ability to detect and read all symbols accurately
Solution Approach 2:
The patent merges multiple symbol images that would normally require separate captures into a single moving image. The moving image contains all symbols appearing at different time points and viewing angles combined in one continuous capture, allowing the reading device to process all symbols simultaneously rather than sequentially, thus resolving the contradiction between complete symbol reading and reading speed
2Productivity
If a moving image is captured to read all symbols at once, then reading speed improves, but the complexity of detecting and verifying symbols increases
Solution Approach 1:
The patent segments the moving image into multiple individual symbol images based on appearance changes detected within the moving image. By automatically dividing the continuous moving image into discrete symbol instances and identifying their chronological order, the system simplifies the detection process while maintaining high reading speed, resolving the contradiction between productivity and detection difficulty
Solution Approach 2:
The patent uses feedback mechanisms to determine the chronological order of symbols based on their appearance changes in the moving image. By analyzing the sequence in which symbols appear and disappear, and using this information to verify authenticity, the system automates the complex verification process, making it easier to handle while preserving reading speed
Data Source
AI summary
A reading device, a reading method and a reading program that can easily and quickly read a composite symbol, and a settlement processing method are provided. A moving image of a composite symbol which includes a plurality of symbols emerging in the same location and whose appearance changes depending on a viewing angle, is captured. The symbols included in the composite symbol are detected from the moving image obtained by image-capturing. Authenticity of the composite symbol is determined based on the obtained moving image.