SYSTEM AND METHOD FOR RECOGNITION OF VEHICLE LICENSE PLATES USING ADAPTIVE LOCAL BINARIZATION

摘要

the invention of the camera shoots the license plate image recognition system and method for on that will . ; First, create an image of a license plate consisting of an edge (edge) only the outline of the object image, the black edge of the video again, making a binary image consisting of only white. Then, each separated by a binarized edge image horizontally by image projection, and a lower region, to the vertical and horizontal projection by the separated area extracting the character contained in the character area, respectively, the threshold value set by the extracted character region The. And, in performing the character area by binarization based on the set threshold value, wherein only a pre-extracted character region is performed based on the binarization threshold value having a different value, even if, according to the physical condition or the environment of the license plate can cause visible symptoms character has blown. Thus, the present invention after separating the character area into a character based on the position again broken into two areas, but performing the binarization for each region, and by applying the binarization threshold value with entries. By doing this, it is possible to obtain a clearer binary outcome can accurately recognize the image of the license plate.