Amir.t's profile - activity

i think my code is wrong and anybody have a correct code Sift image matching by Opencv C++????

http://stackoverflow.com/questions/10...

i use this code c++

this codes is image matching by sift in matlab

enter code here

fprintf('Computing matches.\n') ;
        descr1=uint8(512*descr1) ;
        descr2=uint8(512*descr2) ;
        tic ;
        matches=siftmatch( descr1, descr2 ) ;
        fprintf('Matched in %.3f s\n', toc) ;
        figure(3) ; clf ;
        plotmatches(I1,I2,frames1(1:2,:),frames2(1:2,:),matches) ;
        drawnow ;

enter code here

    I1=imreadbw('c:\st11.jpg') ;
    I2=imreadbw('c:\test1.jpg') ;
    I1=I1-min(I1(:)) ;
    I1=I1/max(I1(:)) ;
    I2=I2-min(I2(:)) ;
    I2=I2/max(I2(:)) ;
    fprintf('Computing frames and descriptors.\n') ;
    [frames1,descr1,gss1,dogss1] = sift( I1, 'Verbosity', 1 ) ;
    [frames2,descr2,gss2,dogss2] = sift( I2, 'Verbosity', 1 ) ;
    figure(11) ; clf ; plotss(dogss1) ; colormap gray ;
    figure(12) ; clf ; plotss(dogss2) ; colormap gray ;
    drawnow ;
    figure(2) ; clf ;
    subplot(1,2,1) ; imagesc(I1) ; colormap gray ;
    hold on ;
    h=plotsiftframe( frames1 ) ; set(h,'LineWidth',2,'Color','g') ;
    h=plotsiftframe( frames1 ) ; set(h,'LineWidth',1,'Color','k') ;

thank for answer images size are same.but the left picture has cropped and zoomed.it not seems that have effect on result. i think that matlab code is correct but in result of opencv is not good i need a correct opencv code about Sift image matching

hi guys i trying sift matching in opencv and got bad result , but with same picture in matlab result is excellent...why ???

in above picture , left picture is output of opencv sift matching and in right sift matching by matlab pictures is equal and output is different...

is there anybody to help me ???? thank a lot

hi guys i am working on vehicle type detection(for example detect BMW) uses Sift algorithm and OPENCV i uses image matching and i make a Pattern (front car) and compare this pattern with other input image i have a problem

this algorithm just find same pattern in input image and cannot find similar car in image please give me idea

i test a pattern by Matlab on this attachment picture please see it

hi adamIB

i try to install opencv3 for my project with extra module (i want to use sift algorithm for image processing) but i cannot configure cmake with contrib (contain feature2d) ..i got error "CMake Error at cmake/OpenCVModule.cmake:277 (add_subdirectory):

The binary directory C:/opencv/build/modules/calib3d/.calib3d" and for other modules "core,cudaarithm,cudabgsegm,cudacodec,cudacodec,cudafeatures2d,cudafilters,cudaimgproc,cudalegacy,cudaobjdetect,cudaoptflow,cudastereo,cudawarping,cudev,features2d,flann,highgui,imgcodecs, etc.)

for example recognition from front of vehicle (car) ....excuse me for bad english typing....

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