关键词: 车牌字符分割 图像增强 二值化 倾斜校正

Abstract:

The article aims at the characteristics of license plate images,and puts forward a new approach to license plate preprocessing by character segmentati  on. The license plate after location is usually colorful, so before the segmentation isdone, we transfer the color plate to gray firstly, and then enhan ce the image, threshold, clear the rivet, tilt correction and obtain a refined location of the license plate. Experimental results show the proposed met   hod is easy-to-implement and offers robustness when dealing with the number plate that has dirt, poor contrast, uneven illumination or tilt.

Key words: license plate character segmentation, image enhancement, threshold, tilt correction