The Harris interest point detector [6] is a classic technique to
robustly detect in a scene points that have strong orthogonal
image gradients. Such points are more likely to be tracked
across an image sequence.
To compute and overlay the detected corners on a street scene,
>> C = iharris(building);
>> idisp(building);
>> markfeatures(C, 50, .wo.);
will display the 50 strongest corners as white circles (see
Figure 9). The function
markfeatures() with outputarguments will be assigned the pixel coordinates of the corner