opencv-features2d

SIFT & SURF : Set OPENCV_ENABLE_NONFREE CMake ==> Solution OpenCV 3 & OpenCV 4 [closed]

由 五迷三道 提交于 2020-12-14 06:24:12
问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed last month . Improve this question I try to use the SIFT and SURF function with some of the versions of OpenCV 3 and openCV 4 (after having installed opencv-contrib-python) with: pip install opencv-contrib-python i try version 3.4.3 and 3.4.9 and 4.1.0, but have same probleme: sift = cv2.xfeatures2d.SIFT_create(

openCV4Android features2d error

由 醉酒当歌 提交于 2020-01-13 19:48:48
问题 I want to use features2d to draw good matches (not all matches) between two images.So I used this snippet of code: Mat gray1 = //image1 converted to gray Mat gray2 = //image2 converted to gray MatOfDMatch matches = new MatOfDMatch(); MatOfDMatch gm = new MatOfDMatch(); LinkedList<DMatch> good_matches = new LinkedList<DMatch>(); MatOfKeyPoint keypoints_object = new MatOfKeyPoint(); MatOfKeyPoint keypoints_scene = new MatOfKeyPoint(); Mat descriptors_object = new Mat(); Mat descriptors_scene =

openCV4Android features2d error

由 我们两清 提交于 2020-01-13 19:48:08
问题 I want to use features2d to draw good matches (not all matches) between two images.So I used this snippet of code: Mat gray1 = //image1 converted to gray Mat gray2 = //image2 converted to gray MatOfDMatch matches = new MatOfDMatch(); MatOfDMatch gm = new MatOfDMatch(); LinkedList<DMatch> good_matches = new LinkedList<DMatch>(); MatOfKeyPoint keypoints_object = new MatOfKeyPoint(); MatOfKeyPoint keypoints_scene = new MatOfKeyPoint(); Mat descriptors_object = new Mat(); Mat descriptors_scene =

Opencv - Features2D + Homography incorrect results

由 狂风中的少年 提交于 2019-12-23 13:13:59
问题 I have been having some issues getting the outline of the detected object in the correct place, its as if the coordinates are in the wrong place. I have the hessian set to 2000 and I have filtered for matches that are less than 3 times the minimum distance. Any help would be appreciated. Results from running matching and homography: Code sample below: public static void findMatches() { System.loadLibrary(Core.NATIVE_LIBRARY_NAME); //Load Image 1 Mat img_object = Highgui.imread("./resources

openCV4Android features2d error

由 可紊 提交于 2019-12-06 07:17:52
I want to use features2d to draw good matches (not all matches) between two images.So I used this snippet of code: Mat gray1 = //image1 converted to gray Mat gray2 = //image2 converted to gray MatOfDMatch matches = new MatOfDMatch(); MatOfDMatch gm = new MatOfDMatch(); LinkedList<DMatch> good_matches = new LinkedList<DMatch>(); MatOfKeyPoint keypoints_object = new MatOfKeyPoint(); MatOfKeyPoint keypoints_scene = new MatOfKeyPoint(); Mat descriptors_object = new Mat(); Mat descriptors_scene = new Mat(); FeatureDetector fd = FeatureDetector.create(FeatureDetector.ORB); fd.detect(gray1, keypoints

Extract common part of images with Opencv

由 喜欢而已 提交于 2019-12-02 04:01:37
问题 I'm writing a program that find differences between images. For now, I'm finding features with AKAZE, so I've the common point of the 2 images. The problem is that these 2 images have only a part in common. How can I extract the common part from both images? For better explanation: I need to extract the common part from the first image and then from the second, so I can do absdiff for finding difference. I'm programming in c++ Thanks to all! 回答1: You should warp the first image onto the
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