Compute the Euler number from a binary image.

 

function call:

[num1]=vsg('EulerNum',in_img1);

 

Arguments:

in_img1 input image, 3 channel RGB, 1 channel greyscale or binary image.

 

Return values:

The num1 – the Euler number of the input image. The number of objects in the image minus the number of holes in those objects.

 

Example:

img = openimage('blobs.jpg');

[out_img1]=vsg('Threshold',img,100);

[num1]=vsg('EulerNum',out_img1);