Character recognition method and device

Abstract

The invention provides a character recognition method and device. The character recognition method is applied to recognition for a character in an image. The image comprises a text box with the position being uncertain, and the character is filled in the text box. The character recognition method comprises the steps of determining the position of the text box in an image to be recognized; intercepting a target image corresponding to the text box in the image to be recognized according to the position of the text box; calculating a target histogram of oriented gradient (HOG) feature description operator corresponding to the target image; acquiring a character to be recognized of the target image according to the target HOG feature description operator and a pre-trained support vector machine (SVM) classifier. By applying the embodiment of the invention, the position of the text box is determined in the image to be recognized, and a target image corresponding to the text box in the image to be recognized is intercepted according to the position of the text box, so that active positioning and interception for the target image are realized, an error occurred when a target image area is intercepted according to preset fixed coordinates is avoided, and the recognition accuracy is improved.

Description

technical field [0001] This application relates to the technical field of computer recognition, in particular to a method and device for character recognition. Background technique [0002] At present, character recognition technology is applied in many scenarios. For example, in the process of marking examination papers, for examination papers scanned to the computer, the examination questions and answers are mainly completed manually, while some records and statistics of student numbers, names, and scores can be done manually. It is done by computer recognition. This requires the computer to achieve a certain accuracy in the recognition of numbers and characters. [0003] Taking the recognition of characters in the test paper as an example, in the prior art, since the image file format of the recognition object is required to be uniform and the size is fixed, firstly, the paper of the test paper will be scanned into an image file, and intercepted according to the preset f...

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method and device for character recognition, which are used to solve the problem of low recognition accuracy in the prior art

Images