CAJ | 학술논문

对单相电表表盘读数的显示特点进行了研究,针对在电表表盘末位刻度识别中存在识别困难,识别率低的情况,提出了像素比例法这一精确识别方法.对初始图像采用大津二值化法,中值滤波法进行预处理,用投影法分别对字段及单个字符进行分割.采用GA-BP算法识别表盘读数.在样本集下单整字识别率为99.2%,非整字识别率为97.7%.实验结果表明,该方法对刻度有较高的识别精度.
대단상전표표반독수적현시특점진행료연구,침대재전표표반말위각도식별중존재식별곤난,식별솔저적정황,제출료상소비례법저일정학식별방법.대초시도상채용대진이치화법,중치려파법진행예처리,용투영법분별대자단급단개자부진행분할.채용GA-BP산법식별표반독수.재양본집하단정자식별솔위99.2%,비정자식별솔위97.7%.실험결과표명,해방법대각도유교고적식별정도.
The feature is researched, which numeric characters display on single-phase ammeter dial plate. Against the scale which is on the bottom of the ammeter dial plate is difficult to be recognized, and its recognition rate is very low, an algorithm based on Pixei-scale method is put forward. Otsu binary transform algorithm and mid-value filter method are used to preprocess the original image. Pro-jection algorithm is used to field a single character and the segmentation. GA-BP algorithm is introduced into precise automatic recognition of numeric characters on single-phase ammeter dial plate. The whole-word recognition rate reaches 99.2%, non-whole word recognition rate reaches 97.7%. Experiments show that the algorithm has more high precision.