function Im = imreadgs(filename) %------------------------------------------------------------------------ % Im = imreadgs(filename) % % Reads an image and transforms it into a grayscale image consisting of % doubles. % % filename: name of the image file. % Im: a grayscale image in double. %------------------------------------------------------------------------ %------------------------------------------------------------------------ % This file is part of the ASTRA Toolbox % % Copyright: 2010-2021, imec Vision Lab, University of Antwerp % 2014-2021, CWI, Amsterdam % License: Open Source under GPLv3 % Contact: astra@astra-toolbox.com % Website: http://www.astra-toolbox.com/ %------------------------------------------------------------------------ Im = double(imread(filename)); if size(Im,3) > 1 Im = Im(:,:,1); end