How do I convert rgb to Lab and display only a* layer with matlab?

I want to get a* layer to continue processing.

Answer 1

[Jarrod Dowdall]

Perhaps the easiest way would be to use the function rgb2lab() in matlab. Note that you will need the Image Processing Toolbox.

Lab = rgb2lab(rgb);
a = Lab(:,:,2);

I hope that helps you get started.

[Image Analyst]

And then, to display:

imshow(a, []);
axis('on', 'image');
title('a channel', 'FontSize', 20);

[MH K]

Thanks