opencv3.0沒有SIFT嘛，我想用怎麽辦。。。新手，渣，求指教

void sift_detector_and_descriptors(IplImage* i_left,IplImage* i_right)

{

Mat mat_image_left=Mat(i_left,false);

Mat mat_image_right=Mat(i_right,false);

cv::SiftFeatureDetector *pDetector=new cv::SiftFeatureDetector;

pDetector->detect(mat_image_left,left_key_point);

pDetector->detect(mat_image_right,right_key_point);

Mat left_image_descriptors,right_image_descriptors;

cv::SiftDescriptorExtractor *descriptor_extractor=new cv::SiftDescriptorExtractor;

descriptor_extractor->compute(mat_image_left,left_key_point,left_image_descriptors);

descriptor_extractor->compute(mat_image_right,right_key_point,right_image_descriptors);

Mat result_l,result_r;

drawKeypoints(mat_image_left,left_key_point,result_l,Scalar::all(-1),0);

drawKeypoints(mat_image_right,right_key_point,result_r,Scalar::all(-1),0);

//imshow("result_of_left_detector_sift",result_l);

//imshow("result_of_right_detector_sift",result_r);

Mat result_of_sift_match;

BruteForceMatcher<L2<float>> matcher;

matcher.match(left_image_descriptors,right_image_descriptors,result_of_point_match);

drawMatches(mat_image_left,left_key_point,mat_image_right,right_key_point,result_of_sift_match,result_of_sift_match);

imshow("matches_of_sift",result_of_sift_match);

imwrite("matches_of_sift.jpg",result_of_sift_match);

}

void main()

{

IplImage *n_left_image=cvLoadImage("D:\\lena.jpg");

IplImage *n_right_image=cvLoadImage("D:\\lena_r.jpg");

sift_detector_and_descriptors(n_left_image,n_right_image);

cvWaitKey(0);

}

這個是我實現sift匹配的代碼，我就懂妳為什麽要用到 drawMatchesKnn() , 每個版本都是支持SIFT的，和版本沒有關系的。

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