I tried to install opencv-contrib-python-nonfree using pip install opencv-contrib-python-nonfree. and it says the below error. I googled it and i found the below website says it is gone. so is there an alternative? I can install opencv-contrib-python no problem. The reason I need nonfree version is because of the error when calling SURF algorithm like this: surf = cv2.xfeatures2d.SURF_create(8000). So how to solve it? I need to use SURF algorithem. Thanks
https://github.com/skvark/opencv-python/issues/348
the error when install opencv-contrib-python-nonfree:
ERROR: Could not find a version that satisfies the requirement opencv-contrib-python-nonfree (from versions: none)
ERROR: No matching distribution found for opencv-contrib-python-nonfree
The error when using SURF
import cv2
img = cv2.imread('../images/varese.jpg')
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
surf = cv2.xfeatures2d.SURF_create(8000)
keypoints, descriptors = surf.detectAndCompute(gray, None)
error: OpenCV(4.5.1) C:UsersappveyorAppDataLocalTemp1pip-req-build-i1s8y2i1opencv_contribmodulesxfeatures2dsrcsurf.cpp:1029: error: (-213:The function/feature is not implemented) This algorithm is patented and is excluded in this configuration; Set OPENCV_ENABLE_NONFREE CMake option and rebuild the library in function 'cv::xfeatures2d::SURF::create'
