尝试在MATLAB中将x * y * 3矩阵转换为图像时出错？

Question

I have an x*y*3 matrix in MATLAB which I'm trying to convert to an image (layer one is the R intensity, layer 2 is the G intensity, layer 3 is the B intensity.

I'm currently only using an imwrite function to convert it, but the resulting image is always in black and white. Because my calculations all currently rely on the matrix being 3 layers I can't compress it down to one and use the ind2rgb function and the map, can I?

I'm pretty lost, so any advice would be greatly appreciated. Please and thank you!

Answer 1

It is possible that the values of your image are out of range.

You can try either uint8() :

imwrite(uint8(I), 'file.png');

or, mat2gray() :

imwrite(mat2gray(I),'file.png');

assuming I is your image data.