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%% Calculate Euler Number for Binary Image % %% % Read binary image into workspace, and display it. % Copyright 2015 The MathWorks, Inc. BW = imread('circles.png'); imshow(BW) %% % Calculate the Euler number. In this example, all the circles touch so % they create one object. The object contains four "holes", which are the % black areas created by the touching circles. Thus the Euler number is 1 % minus 4, or -3. bweuler(BW)