using this code, I am able to get the matched points, but I want to display the feature points without including the matched points. what modifications should the code need? Please someone help, Thank You.
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Sourav Das
on 9 Apr 2015
Commented: chandrakant kavad
on 7 Jun 2020
function s=surfMatchesExample(str,name,st,en) matches_arr=[];
for num_images=st:en-1
disp(['Processing frame:',num2str(num_images),' and ',num2str(num_images+1)]);
path1=[str,'\',name,'_',num2str(num_images),'.bmp'];
path2=[str,'\',name,'_',num2str(num_images+1),'.bmp'];
I1=imread(path1);
I2=imread(path2);
img_arr1=rgb2gray(I1);
img_arr2=rgb2gray(I2);
f1= detectSURFFeatures(img_arr1);
f2= detectSURFFeatures(img_arr2);
h=length(f1);
g=length(f2);
disp(['No. of matching features in block ',num2str(num_images),'=',num2str(h)]);
disp(['No. of matching features in block ',num2str(num_images+1),'=',num2str(g)]);
[features1, validf1] = extractFeatures(img_arr1, f1);
[features2, validf2] = extractFeatures(img_arr2, f2);
%strongestPoints = validf1.selectStrongest(1000);
%no_of_features1=length(strongestPoints);
%disp(['No. of matching features in block ',num2str(num_images),'=',num2str(no_of_features1)]);
indexPairs = matchFeatures(features1, features2);
matchedIm1 = validf1(indexPairs(:,1),:);
matchedIm2 = validf2(indexPairs(:,2),:);
% matchedIm3 = validf2(indexPairs(:,3),:);
no_of_matchedPts=length(indexPairs);
%[features3, validf3] = extractFeatures(indexPairs,1);
% m3 = matchFeatures(features3, features2);
%m4=length(m3);
disp(['No. of matching features in block ',num2str(num_images),',',num2str(num_images+1),'=',num2str(no_of_matchedPts)]);
%disp(num2str(m4));
%[tform, inlierf1, inlierf2] = estimateGeometricTransform(matchedIm1, matchedIm2, 'affine');
figure;
showMatchedFeatures(I1,I2, matchedIm1, matchedIm2,'montage');
%g=length(h);
%disp(['No. of matching features in block ','=',g]);
end
end
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Accepted Answer
Dima Lisin
on 9 Apr 2015
Do you mean that you want to display the detected points before matching? If so, than you can do the following:
f1= detectSURFFeatures(img_arr1);
figure
imshow(img_arr1);
plot(f1);
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