OpenCV SURF关键点比较

Question

我在相机中有2个图像，方向稍微偏左，我想从opencv中找到方向，我从2个图像中获得了冲浪关键点，我的问题是如何比较这2个关键点来找到方向。

Answer 1

You need to apply a matcher (cv FlannMatcher for example) to detect which keypoints in both images correspond to the same point.

Then, with the paired matches you have to apply cv::findHomography() . This algorithm will use 4 matched pairs to extract the homography matrix.

The last step ( some code here ) is to convert from homography matrix to pose matrix (extrinsic parameters matrix). The pose matrix is composed by rotation and translation.