How can an color image can be changed have only four color in desire area.

Hello , i am doing with image segmentation and have an gray image segmented with only four different intensity level .Now how can be it convert to four different color rgb format.

Answer 1

[Walter Roberson]

[indimg, map] = rgb2ind(YourImage, 4);
newimg = ind2rgb(indimg, map);

[Tabish Raza]

can it be done with desire pixel intensity.suppose i need only four color red blue green and yellow in output correspond four different gray scale intensity

[Image Analyst]

You can create up any colormap you want to assign any graylevel range you want to the color you want. Then pass it in to ind2rgb to make a new rgb image, or just call colormap if you want to not create a new RGB image and just view your grayscale image in a pseudocolor image on the display. Do you just want to view it in color with colormap, or do you actually need a new variable in your program that represents the RGB image?