Character string reading method, character string reading device, and program

The character string reading method enhances the accuracy of character recognition and reduces misreadings by using specific character recognition conditions and notifying possible misreadings, addressing the challenges faced by portable reading devices in varying imaging environments.

JP2025040933AActive Publication Date: 2025-03-25OPTOELECTRONICS CO LTD
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Patent Information

Application Number
JP2024073531
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-04-30
Publication Date
2025-03-25
Estimated Expiration
2043-09-12

AI Technical Summary

Technical Problem

Portable reading devices face challenges in accurately reading character strings due to varying imaging environments, leading to potential misreadings. Existing technologies do not adequately address the need for frequent and appropriate notifications of possible misreadings, nor do they effectively reduce the incidence of misreadings.

Method used

A character string reading method that includes image acquisition, format acquisition, setting character recognition conditions to identify specific character groups, character recognition, and outputting a second character string that matches the acquired format. The method also includes procedures for notifying possible misreadings based on the number of characters in the output string and the presence of figures that do not constitute characters.

Benefits of technology

Improves the accuracy of character recognition in captured images through simple and low-load processing, while providing appropriate notifications of possible misreadings, thereby reducing the incidence of errors.

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Abstract

To appropriately notify an operator of a possibility of misreading in character recognition for recognizing a character in a captured image.SOLUTION: An imaging portion 141 acquires an image of an object to be read, an output format setting portion 147 sets a format of a character string to be read from the acquired image and to be output, and a character string recognizing portion 143 recognizes a character string in the acquired image. A character extracting portion 144 acquires a portion matching the set format among the recognized first character string as a candidate of a second character string for output, and selects one appropriate candidate of a plurality of candidates based on a predetermined condition as the second character string for output when the plurality of candidates are acquired. When the character extracting portion 144 acquires a plurality of candidates of the second character string, a notification necessity determination portion 163 determines that notification of a possibility of misreading is necessary and causes a notifying portion 162 to perform the notification.SELECTED DRAWING: Figure 20
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