CAJ | 학술논문

车牌角度矫正是汽车牌照识别的一个重要步骤。采用Hough变换法检测车牌的倾斜角度。首先对汽车牌照图像预处理，再提取车牌上下边框的边缘信息，利用Hough变换对提取的边缘信息进行变换，从而获得车牌上下边框的拟合直线及其倾斜角度，并引入可信度，以度量检测结果的优劣，最终获得较精确的汽车牌照的倾斜角度。实验结果表明，该法抗干扰能力强，检测精度高。
차패각도교정시기차패조식별적일개중요보취。채용Hough변환법검측차패적경사각도。수선대기차패조도상예처리，재제취차패상하변광적변연신식，이용Hough변환대제취적변연신식진행변환，종이획득차패상하변광적의합직선급기경사각도，병인입가신도，이도량검측결과적우렬，최종획득교정학적기차패조적경사각도。실험결과표명，해법항간우능력강，검측정도고。
License plate Angle correction is an important step of car license plate recognition .This article uses the Hough Transform method to detect the angle of the car license plate .In order to extract the frame information from the edge of the plate ,we should pretreat the car license plate images at the beginning ,then use the Hough transform to transform the extracting information of edge to get the line of the car license plate and its frame fitting line Angle . At the same time , we can introduce credibility to measure the pros and cons of test results .Finally we can get a pre-cise angle of the car license plate .The experiments show that this method can resist interference and have a good effect.The angle of car license plate measured has high credibility , reliability, and good results.