COMPLEX BACKGROUND-ORIENTED OPTICAL CHARACTER RECOGNITION METHOD AND DEVICE

摘要

A complex background-oriented optical character recognition method and device. First, an original image and an image after edge detection are superposed, and then inversion and Gaussian filtration are conducted on the processed image. On this basis, an integral image is calculated according to the processed image, and the locating process is accelerated using the integral image, so that accurate and quick locating and recognition of characters can be realized on the basis of effectively suppressing background noise and highlighting character information. The method of the present invention comprises: collecting image information to obtain a collected image; according to character characteristics, acquiring a target character region from the collected image, and taking same as a target object; extracting character edge information in the target object using a differential method to obtain an extracted image; superposing the target object and the extracted image to obtain a recovery image; conducting inversion and Gaussian filtration processing on the recovery image to obtain a processed image; searching for a target character location in the processed image; and recognizing the target character location.