how to count number of Corner Detected in matlab

I have implemented certain number of algorithms to detect corners in matlab like harris corner ,moravec corner ect.. Now my question is how to detect the number of corners detected. In other words i want the count of number of corners detected.

Answer 1

[Wei Zhang]

Harrispoint = detectHarrisFeatures(im_gray);

[Numberofcorners, ~] = size(Harrispoint);