根据铜转炉内壁蚀损趋势分析的需要,提出了一种基于等温线轮廓特征的红外系列图像配准算法。使用了质心距离函数和傅里叶描述寻找相似度最高的等温线轮廓,在相似轮廓线对的点集合上建立对应关系,经匹配将图像配准问题转换为标准的参数矩阵最小二乘估计问题,由仿射变换建立图像的配准空间。测试结果表明,算法具有简单、运算速度快的特点,能满足分析精度要求。

For the tendency analysis of copper converter inner-lining wear,a new method of infrared sequential images registration based on the isotherm contour features was proposed. The most similar isotherm contour was sought by centroid distance function and Fourier descriptor. The parallelism point set was given on the similar isotherm contour,and the images registration space was built by projective transformation. The image registration problem was converted into the least square estimation problem of standard parameter matrix. The test result shows that the isotherm contour matching and images registration are found rapidly and simply by the method,which may attain the analytical precision of smelting plant.