Remove SURF points according to scales
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Hai,
I would like to remove any SURF points that having scales less than 2. how can i do that?
please help.
2 Comments
John D'Errico
on 30 Dec 2016
HUH? Slow down. Ask your question clearly.
Apparently you have a surface, generated by surf. I think?
You don't want to plot some part of the surface?
What is a scale? Maybe something that you weigh yourself with?
Answers (2)
KSSV
on 30 Dec 2016
[x,y,z] = peaks(100) ;
figure(1)
surf(x,y,z)
% remove less then 2
z(z<2) = NaN ;
figure(2)
surf(x,y,z)
3 Comments
Image Analyst
on 30 Dec 2016
That's why it helps to list toolboxes in the Products section. I did that for you but you should do it yourself from now on.
Anand
on 30 Dec 2016
% Read an image
I = imread('cameraman.tif');
% Compute SURF features
points = detectSURFFeatures(I);
% Filter out points with scale less than 2
newPoints = points( points.Scale<2 );
% Plot points
imshow(I);
hold on;
plot(newPoints);
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