opencv 3 python函数cv2.detectAndCompute和cv2.compu上的功能检测错误

Question

我使用opencv 3.0.0和python 2.7.5_x32

这是我的代码（ORB功能检测）：

import numpy as np
import cv2
from matplotlib import pyplot as plt

img1 = cv2.imread('C:\\Python27\\madar1.jpg',0)          # queryImage
img2 = cv2.imread('C:\\Python27\\madar2.jpg',0) # trainImage

# Initiate SIFT detector
orb = cv2.ORB_create()

# line 12
# find the keypoints and descriptors with SIFT
kp1, des1 = orb.detectAndCompute(img1,None)
kp2, des2 = orb.detectAndCompute(img2,None)

# create BFMatcher object

bf = cv2.BFMatcher(cv2.NORM_HAMMING, crossCheck=True)

# Match descriptors.
matches = bf.match(des1,des2)

# Sort them in the order of their distance.
matches = sorted(matches, key = lambda x:x.distance)

# Draw first 10 matches.
img3 = cv2.drawMatches(img1,kp1,img2,kp2,matches[:10], flags=2)

plt.imshow(img3),plt.show()

cv2.waitKey()
cv2.destroyAllWindows()

这是错误信息，错误信息在 kp1，des1=orb.检测和计算（img1，无）部分， 我在opencv 2.4.11上工作过，但在opencv 3.0.0上不工作！

    Traceback (most recent call last):
  File "C:\Python27\orb_matcher.py", line 12, in <module>
   kp1, des1 = orb.detectAndCompute(img1,None)
error: ..\..\..\modules\python\src2\cv2.cpp:163: error: (-215) The data should normally be NULL! in function NumpyAllocator::allocate

请帮帮我，我该怎么做才能成功？

Answer 1

这是一个已知的错误。您可以在这里找到更多信息https://github.com/opencv/opencv/issues/6081。

今天有人正在解决这个问题：T-API python support implemented #6847。

Answer 2

您可以在导入cv2和其他脚本后尝试添加此脚本cv2.ocl.setUseOpenCL(False)这解决了我的问题。