摘要
重点研究直线图像的直线方程拟合方法,提出了一种基于最小距离直线拟合新方法,用于拟合指针表刻度直线。对采集的仪表图像做预处理后,获得仪表各刻度直线的二值图像。使用最小距离直线拟合方法拟合各刻度中心直线,使用刻度拟合直线相交点对拟合直线进行最小二乘修正,提高刻度中心直线的拟合精度。仿真结果表明,该直线拟合方法能快速确定高精度指针表刻度线图像的精确直线方程,有利于提高指针表读数的精度。
The straight-line equation fitting method of the straight-line image is researched in detail, and a straight-line fitting method is proposed based on the least distance for fitting pointer meters scales center straight-line. After pre-processing of poin- ter meters image, the meter scale linear binary image is obtained. Firstly, the least distance straight-line fitting method is used to fitting each scale center straight-line, then the crosspoints of the scale fitting straight-line is used to fix the fitting line on the least-square correction, and the scale center straight-line fitting precision is improved. Simulation results show that the linear fit- ting method can rapidly determine the precise equation of the scale center straight-line of the high-precisio~ pointer meters and improve effectively the accuracy of meter readout.
出处
《计算机工程与设计》
CSCD
北大核心
2012年第7期2726-2729,共4页
Computer Engineering and Design
基金
国家自然科学基金项目(11072063)
关键词
指针表
高精度
特征点
直线拟合
最小距离法
pointer meters
high-precision
feature point straight-line fitting
least distance method
