By using rgb2bind function 512x512x3 image is converted into 512x512 for algorithm implementation.If i have to convert 512x512 image into 512x512x3 image what needs to be done?

A=imread('airplane.bmp');
[Z,map]=rgb2ind(A,256);

A is 512x512x3 and Z is 512x512.

I want to perform reverse operation.

Answer 1

[Walter Roberson]

A_rebuilt = ind2rgb(Z, map);

[Jan]

@Sudeep Albal: This answer looks a kind of trivial. You can find such solutions by reading the "See also" line of the commands.