gusucode.com > 《MATLAB图像与视频处理实用案例详解》代码 > 《MATLAB图像与视频处理实用案例详解》代码/第 16 章 基于Hu不变矩的图像检索技术/Compute_QuadDistance.m

    function value = Compute_QuadDistance(X1, map1, X2, map2)
[count1, y1] = imhist(X1, map1);
[count2, y2] = imhist(X2, map2);
q = count1 - count2;
s = abs(q);
A = Compute_SimMat(map1, map2);
d = s.'*A*s;
d = d^1/2;
d = d / 1e8;
value = d;