Patent Document ID: 9613266
Application ID: 15032167

Base Claim:
1. A complex background-oriented optical character recognition method, comprising: capturing image information, to obtain a captured image; acquiring a region of target characters from the captured image based on character characteristics as a target object; extracting character edge information in the target object by using a differential method, to obtain an extracted image; superposing the target object and the extracted image, to obtain a recovery image; performing an inverse and a Gaussian filtering on the recovery image, to obtain a processed image; searching for a location of the target characters in the processed image; and recognizing the target characters.

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Claim 5:
5. The complex background-oriented optical character recognition method according to claim 1 , wherein, the searching for the location of the target characters in the processed image comprises: determining a search box based on the character characteristics and the processed image; and sliding the search box in the processed image continuously by a predetermined rule, calculating a sum of grayscales of pixels in the search box, and determining a location of the search box in which the sum of grayscales of pixels is the greatest to be the location of the target characters.