% 获取最大值和最小值,从而将矩阵的值域放缩到0~255之间
maxH = max(max(map));
minH = min(min(map));
map = (map - minH) / (maxH - minH) * 255;
% 矩阵转灰度图
image = mat2gray(map);
% 显示
figure
imshow(image);
% 获取最大值和最小值,从而将矩阵的值域放缩到0~255之间
maxH = max(max(map));
minH = min(min(map));
map = (map - minH) / (maxH - minH) * 255;
% 矩阵转灰度图
image = mat2gray(map);
% 显示
figure
imshow(image);