摘要
针对动态数字图像的识别问题,提出基于二级复合链码的七段数字识别方法。对细化后的目标图像进行第1级8方向Freeman链码描述,在此基础上,进行第2级4方向Freeman链码描述,得到的复合链码与七段数字具有单一映射关系。在无线瓦斯检测系统中的应用结果表明,该方法具有较高的识别率和执行效率。
Aiming at the recognition problem of dynamic digit image, this paper proposes seven-segment digit recognition method based on secondary compound chain code. The first level 8-direction Freeman chain code description is carried on the thinned object image. On the basis of this, the second level 4-direction Freeman chain code description is continued. It can make the sole mapping relationship between the obtained compound code and the described seven-segment digit. Application result in a wireless gas monitoring system shows that this method has high recognition ratio and high processing efficiency.
出处
《计算机工程》
CAS
CSCD
北大核心
2010年第7期182-184,共3页
Computer Engineering
关键词
链码
二级复合链码
七段数字
图像细化
数字识别
chain code
secondary compound chain code
seven-segment digit
image thinning
digit recognition
