现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2014年
16期
92-95
,共4页
车牌定位%字符分割%字符识别%Halcon
車牌定位%字符分割%字符識彆%Halcon
차패정위%자부분할%자부식별%Halcon
license plate location%character segmentation%character recognition%Halcon
为了实现车牌字符快速准确的识别，基于Halcon软件提出了一种二次阈值的车牌定位方法，根据车牌在HSV颜色模式中S通道的纹理特征进行一次阈值，获取车牌候选区域，其次校正车牌候选区域，最后进行第二次阈值，通过字符区域的最大（小）行（列）值确定出精确的车牌区域；在字符分割模块提出了一种汉字分割与其他字符连通域法相结合的方法。实验结果表明，这两种方法简单快捷、识别正确率高。
為瞭實現車牌字符快速準確的識彆，基于Halcon軟件提齣瞭一種二次閾值的車牌定位方法，根據車牌在HSV顏色模式中S通道的紋理特徵進行一次閾值，穫取車牌候選區域，其次校正車牌候選區域，最後進行第二次閾值，通過字符區域的最大（小）行（列）值確定齣精確的車牌區域；在字符分割模塊提齣瞭一種漢字分割與其他字符連通域法相結閤的方法。實驗結果錶明，這兩種方法簡單快捷、識彆正確率高。
위료실현차패자부쾌속준학적식별，기우Halcon연건제출료일충이차역치적차패정위방법，근거차패재HSV안색모식중S통도적문리특정진행일차역치，획취차패후선구역，기차교정차패후선구역，최후진행제이차역치，통과자부구역적최대（소）행（렬）치학정출정학적차패구역；재자부분할모괴제출료일충한자분할여기타자부련통역법상결합적방법。실험결과표명，저량충방법간단쾌첩、식별정학솔고。
In order to achieve accurate and quick recognition of license plates,a license plate positioning method with secondary threshold is proposed based on Halcon. A primary threshold is made based on the license plate texture characteristics of S channel in HSV color mode to get the candidate region of a license plate,and then adjusting the candidate region to make the second threshold and determine the exact license plate region according to the maximum(minimum)row(column)value of the character region. As for the character segmentation module,a method to combine Chinese character segmentation with other character connected domain method is proposed. The experimental results indicate that both of the two methods are simple and quick,and have high recognition rate.
