python - AttributeError: 'module'对象没有属性 'cv'

Question

尝试执行BGR到二进制阈值转换时，出现以下错误。

imgthreshhold = cv2.inRange(img, cv2.cv.Scalar(3,3,125), cv2.cv.Scalar(40,40,255)) AttributeError: 'module' object has no attribute 'cv'

以下是完整的程序。

import cv2

cap = cv2.VideoCapture(0)
#help(cv2)
while cap.isOpened():
    #BGR image feed from camera
    ret, img = cap.read()
    cv2.imshow('output', img)
    #BGR to grayscale
    img2 = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
    cv2.imshow('grayscale', img2)
    #BGR to binary(RED) thershholded
    imgthreshhold = cv2.inRange(img, cv2.cv.Scalar(3,3,125), cv2.cv.Scalar(40,40,255))
    cv2.imshow('threshholded', imgthreshhold)

    k = cv2.waitKey(10)
    if k==27:
        break

cap.release()
cv2.destroyAllWindows()

我怎样才能解决这个问题？

Answer 1

我一直面临着同样的问题。而且我认为我们正在遵循OpenCV的同一教程。我稍微弄乱了这个函数，发现只提供值就可以了。

因此，您的代码应如下所示:

import cv2

cap = cv2.VideoCapture(0)
#help(cv2)
while cap.isOpened():
    #BGR image feed from camera
    ret, img = cap.read()
    cv2.imshow('output', img)
    #BGR to grayscale
    img2 = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
    cv2.imshow('grayscale', img2)
    #BGR to binary(RED) thershholded
    imgthreshhold = cv2.inRange(img, (3,3,125), (40,40,255))
    cv2.imshow('threshholded', imgthreshhold)

    k = cv2.waitKey(10)
    if k==27:
        break

cap.release()
cv2.destroyAllWindows()