湖南工程学院学报：自然科学版
湖南工程學院學報：自然科學版
호남공정학원학보：자연과학판
Journal of Hunan Institute of Engineering(Natural Science Edition)
2011年
3期
5-8
,共4页
数字识别%八方向跟踪%空洞%缺口%结构特征
數字識彆%八方嚮跟蹤%空洞%缺口%結構特徵
수자식별%팔방향근종%공동%결구%결구특정
numeral recognition%8 Direction Tracking%holes%gaps%architectural feature
在自然光条件下用普通相机拍摄的电表图像，分辨率较低且变形严重，对于不同表盘其数字大小、字形也不同．针对以上问题，提出了一种八方向跟踪找空洞数字识别算法，利用每个字符的空洞和缺口数目对机械式表盘上的数字进行识别．该识别算法无需对数字大小、字形进行归一化．实验表明该找空洞数字识别算法在抗干扰性方面表现良好，有效地降低了算法复杂度，提高了处理速度及识别率．
在自然光條件下用普通相機拍攝的電錶圖像，分辨率較低且變形嚴重，對于不同錶盤其數字大小、字形也不同．針對以上問題，提齣瞭一種八方嚮跟蹤找空洞數字識彆算法，利用每箇字符的空洞和缺口數目對機械式錶盤上的數字進行識彆．該識彆算法無需對數字大小、字形進行歸一化．實驗錶明該找空洞數字識彆算法在抗榦擾性方麵錶現良好，有效地降低瞭算法複雜度，提高瞭處理速度及識彆率．
재자연광조건하용보통상궤박섭적전표도상，분변솔교저차변형엄중，대우불동표반기수자대소、자형야불동．침대이상문제，제출료일충팔방향근종조공동수자식별산법，이용매개자부적공동화결구수목대궤계식표반상적수자진행식별．해식별산법무수대수자대소、자형진행귀일화．실험표명해조공동수자식별산법재항간우성방면표현량호，유효지강저료산법복잡도，제고료처리속도급식별솔．
This paper presents a new method of numeral recognition that applies character features of the power meter images taken by a handheld terminal camera. The main difficulties for this recognition arise from pictures of low acquisition resolution, noise, heavy or light printing, and numerial distortion. Besides, different dials have different figures in sizes and font. Based on above difficulties, a new kind of 8 Direction Tracking Find-Hole method is proposed. Numbers are recognized by extracting holes and gaps of each character. The Find-Hole method in this paper dosen＇t have to normalize irregular characters. Experiments show that this method performs well in anti-interference, reducing the complexity of the algorithm effectively and enhancing the processing speed and recognition rate.
