If you are using SURFPoints object from the Computer Vision System Toolbox, once you create your object, you can access the Location property, e.g.
x = SURFPoints([20 20; 3 4]); % this would normally be generated % by detectSURFFEatures >> x.Location
ans =
20 20
3 4
You can now filter the points based on location, e.g.
>> xcoord = x.Location(:,1) % get column of x coordinates
xcoord =
20
3
>> x(xcoord>5) = [] % wipe out any point where x coordinate is % greater than 5
Hence, you can wipe out points that are within a particular image region. You'll need to know the coordinates of you black border in order to use this strategy. Let me know if any of this is not making sense.
Witek
