I want to use detectSURFFeatures function and get the result in the form of coordinates x,y ?
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How can I get the result of detectSURFFeatures in the form of (x1,Y1, x2,y2,.......),ie in coordinates form. can any one help me thank you in advance
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Walter Roberson
2017 年 5 月 7 日
points = detectSURFFeatures(I);
xxyy = points.Location;
xyxy = reshape( xxyy.', 1, []);
That is, xxyy is an M x 2 array in which the x are the first column and the y are the second column. But you want a row vector in which the x and y alternate, so it is necessary to transform the 2D array to get the vector you want. (Personally I think the 2D array is a lot easier to work with...)
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Walter Roberson
2017 年 5 月 9 日
Try
for j = 1 : Nfeat
pts_3d(j, :) = I(xxyy(j, 2), xxyy(j, 1), :);
end
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