我收到一个错误，TypeError: src 不是 numpy 数组，也不是标量。
Traceback says
Traceback (most recent call last):
File "img.py", line 19, in <module>
gray = cv2.cvtColor(images,cv2.COLOR_BGR2GRAY)
TypeError: src is not a numpy array, neither a scalar
。 我在img.py中写了
import numpy as np
import cv2
import glob
from PIL import Image
# termination criteria
criteria = (cv2.TERM_CRITERIA_EPS + cv2.TERM_CRITERIA_MAX_ITER, 30, 0.001)
# prepare object points, like (0,0,0), (1,0,0), (2,0,0) ....,(6,5,0)
objp = np.zeros((6*7,3), np.float32)
objp[:,:2] = np.mgrid[0:7,0:6].T.reshape(-1,2)
# Arrays to store object points and image points from all the images.
objpoints = [] # 3d point in real world space
imgpoints = [] # 2d points in image plane.
images = Image.open('photo.jpg')
gray = cv2.cvtColor(images,cv2.COLOR_BGR2GRAY)
# Find the chess board corners
ret, corners = cv2.findChessboardCorners(gray, (7,6),None)
# If found, add object points, image points (after refining them)
if ret == True:
objpoints.append(objp)
corners2 = cv2.cornerSubPix(gray,corners,(11,11),(-1,-1),criteria)
imgpoints.append(corners2)
# Draw and display the corners
img = cv2.drawChessboardCorners(img, (7,6), corners2,ret)
cv2.imshow('img',img)
cv2.waitKey(500)
cv2.destroyAllWindows()
我搜索了这个错误，发现了这个问题exceptions.TypeError: src is not a numpy array, neither a scalar ，但是我已经在 cvtColor 方法中使用了 cv2.COLOR_BGR2GRAY 所以我真的无法理解为什么会发生这个错误。我真的无法理解 src 的含义。我的代码有什么问题？我应该如何解决这个问题？我引用了这个 opencv 文档 https://docs.opencv.org/3.4.0/d9/df8/tutorial_root.html .
最佳答案
问题出在这里:
images = Image.open('photo.jpg')
gray = cv2.cvtColor(images,cv2.COLOR_BGR2GRAY)
OpenCV 使用 numpy 数组。因此，您需要将该 PIL 图像转换为 numpy 数组。也许是这样的:
images = np.array(Image.open('photo.jpg'))
gray = cv2.cvtColor(images,cv2.COLOR_BGR2GRAY)
关于python - TypeError : src is not a numpy array, 既不是标量 我的代码有什么问题？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/49062816/