根据

旋转编码的特点，进一步提出旋转编码性能的评价标准．然后，提出基于旋转编码的图像匹配运算

与有效面积求解运算．最后，给出旋转编码区域扩充性质、区域平移性质的定义及对应的实现算

法，并给出算法的运算实例．-According to the characteristics of rotating code，the criterion

of rotating code is proposed．Then，on the basis of rotating code，the method of image matching and valid

area calculating is explained．Finally，the characteristics of expanding in region，definition of horizontal

movement in region and their operation method are introduced and some operation examples are given．