Question

请教，opencv3.0中怎么用sift相关函数

Answer 1

<code>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/nonfree/features2d.hpp> //Thanks to Alessandro

int main(int argc, const char* argv[])
{
const cv::Mat input = cv::imread("input.jpg", 0); //Load as grayscale

cv::SiftFeatureDetector detector;
std::vector<cv::KeyPoint> keypoints;
detector.detect(input, keypoints);

// Add results to image and save.
cv::Mat output;
cv::drawKeypoints(input, keypoints, output);
cv::imwrite("sift_result.jpg", output);

return 0;
}
</code>
需要连接的库包括：
opencv_nonfree248d.lib
opencv_highgui248d.lib
opencv_features2d248d.lib
opencv_core248d.lib;