从灰度图像和自定义颜色贴图创建RGB图像

时间:2014-07-25 22:35:04

标签: image matlab image-processing colors

我有一个灰度级matlab图像,我想将其转换为带有自定义颜色贴图的RGB图像。我用我想要的颜色显示图像没有问题,但是当我使用imwrite时,图形不会保存为RGB图像。它不是300x1000x3数据结构,而是300x1000。我该怎么做才能解决这个问题?

m=255;
map = ones(m,3);
strongsignal = [3, 7, 41]./ 255;
DRAQ = [100, 85, 105]./255;

R = linspace(DRAQ(1),strongsignal(1),254); 
G = linspace(DRAQ(2),strongsignal(2),254);
B = linspace(DRAQ(3),strongsignal(3),254);

Sample = [R', G', B'];

i = imread('sliceXY045_660.png');
limits = graythresh(i);
i_adjust = im2bw(i,limits); 
map(2:255,:)= Sample;

imagesc(i_adjust)
colormap(map)
imwrite(i_adjust,map,'colormap45.png')

1 个答案:

答案 0 :(得分:1)

cmap = colormap(map);
imwrite(i_adjust,cmap, 'colormap45.png', 'png');

将最后一部分改为此..希望这会有所帮助..