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;