how to convert black and white image into a colour image using matlab functions?

how to convert black and white image into a colour image using matlab functions?

Answer 1

[Walter Roberson]

ColorImage = repmat(BWImage,[1,1,3]);

The result will be an RGB image whose colors are the same as the black and white image. If you want colors other than shades of grays, then you would need to alter the image.

Or perhaps the answer you are looking for is

colormap hot

or

colormap copper

or any of the other ready-made colormaps.

[Aya Ahmed]

How to convert colour image into black and white using matlab functions? (inverse image)??

[Image Analyst]

grayScaleImage = rgb2gray(255 - rgbImage);

Answer 2

[PROSANJEET SARKAR]

bwImg=im2bw(image_name,thershold value);

above function you can convert colour image to black and white image