How can I know the number of channels available for a particular image (tiff/png) in MATLAB 7.6 (R2008a)?

A TIFF image can have a number of channels as follows:

- a single channel specifying a black-and-white image

- three channels specifying a color image in RGB color space

- four channels specifying a color image in CMYK color space.

- any number of alpha channels specifying masks and selections

I want to find out the number of channels that my image has.

Answer 1

[MathWorks Support Team]

You can use the IMINFO function to derive this information from the TIFF image. The available number of channels will be one greater than the result.

info = imfinfo( 'demo.tif' );

% The available number of channels

channels = info +1;