opencv-contrib-Python編譯module 'cv2.cv2' has no attribute 'xfeatures2d'
阿新 • • 發佈:2018-11-01
opencv-contrib-Python編譯module 'cv2.cv2' has no attribute 'xfeatures2d'
引言
opencv-contrib-Python編譯出現錯誤:
sift = cv.xfeatures2d.SIFT_create()
cv2.error: OpenCV(3.4.3) C:\projects\opencv-python\opencv_contrib\modules\xfeatures2d\src\sift.cpp:1207: 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::SIFT::create’
即是sift = cv.xfeatures2d.SIFT_create()函式無法使用,也是opencv-contrib-python無法使用。解決方法為降低opencv版本,因為當初安裝時是預設版本安裝的,版本比較高,但是也不清楚為什麼版本高了不支援,反正TensorFlow裡面對版本對應要求比較嚴格。
解決步驟一
開啟Anaconda解除安裝opencv。
pip uninstall opencv-python
pip install opencv-contrib-python
解決步驟二
重灌opencv-python、opencv-contrib-python。指定版本安裝。
pip install opencv_python==3.4.2.16
pip install opencv-contrib-python==3.4.2.16
最後開啟Pycharm執行sift演算法測試:
import numpy as np import cv2 as cv img = cv.imread('test_1.jpg') gray = cv.cvtColor(img,cv.COLOR_BGR2GRAY) sift = cv.xfeatures2d.SIFT_create() kp = sift.detect(gray,None) img=cv.drawKeypoints(gray,kp,img) cv.imshow("SIFT", img) cv.imwrite('sift_keypoints.jpg',img) cv.waitKey(0) cv.destroyAllWindows()