信息熵 ......\shannon.m ......\shannon_test.m 图像模糊熵 ..........\fuzzyentropy_test.m ..........\fuzzy_s.m ..........\fuzzy_s11.m ..........\specialmax.m ..........\specialmin.m 平均梯度 ........\avg_gradient.m ........\gradient_test.m 方差 ....\variance1.m ....\variance1_test.m