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How can i find distance between surf feature point on a signature image in oder to varify real signature or not.

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Afzal wasiullah
Afzal wasiullah 2017-3-8
编辑： Afzal wasiullah 2017-3-8
E= imread('1.png');
F=rgb2gray(E);
G= imsharpen(F,'Radius',2,'Amount',1);
H=im2bw(G);
% points= detectSURFFeatures(l);
figure;
imshow(H); hold on;
title('Image Of H');
% plot(points);
A = imread('4.png');
B=rgb2gray(A);
C= imsharpen(B,'Radius',2,'Amount',2);
D=im2bw(C);
figure;
imshow(D); hold on;
title('Image Of D');
hPoints = detectSURFFeatures(H); dPoints = detectSURFFeatures(D);
figure; imshow(H); title('200 Strongest Feature Points from H Image'); hold on; plot(selectStrongest(hPoints, 200));
figure; imshow(D); title('200 Strongest Feature Points from D Image'); hold on; plot(selectStrongest(dPoints, 200));
this are the code for feature extraction

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