Character color recognition processing method and device

Abstract

The invention discloses a character color recognition processing method and device, and the method comprises the steps: extracting a to-be-recognized region from a picture; performing connected domainanalysis on the to-be-identified area to obtain an external rectangle of a plurality of character areas; for the external rectangle of each character area, taking the pixel color values in the circumscribed rectangles as clustering elements, and performing clustering processing on the clustering elements to obtain a plurality of clustering color values; and comparing the plurality of clustering color values with the background color value of the peripheral area of the external rectangle, and determining the character color of the character area. According to the technical scheme provided by the invention, the color values of the pixels in the circumscribed rectangle of the character area obtained by analyzing the connected domain are clustered, so that the color included in the characterarea is quickly identified; the character colors are determined by comparing the plurality of clustering color values with the background color value of the peripheral area of the circumscribed rectangle, so that the character color recognition precision is effectively improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a character color recognition processing method and device. Background technique [0002] Character recognition algorithms such as OCR can automatically recognize characters in pictures. According to the existing character recognition algorithm, according to the positional relationship, the combination of characters with close distances will be spliced ​​into a character. As for the color of the character, the color of the recognized character is usually directly set to a preset color such as black or through The color of the character is determined by how the color of the character part in the picture is extracted. For example, the Chinese patent application with the application publication number CN 102737241A provides an information processing method, which determines the characters of the character string in the character string region according to the result of the...

AI Technical Summary

Problems solved by technology

[0003] However, in order to obtain a better display effect when displaying pictures, most of the pictures are processed by anti-aliasing, etc. The above-mentioned processing will cause the color value of the character part in the picture to not be a fixed value, especially the edge position is usually using the difference value If the intermediate value generated by the calculation is used as the color value, the color of the character cannot be accurately recognized by using the existing technology, and there is a problem of low character color recognition accuracy

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