Python mat 不是数字元组：openCV 错误
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mat is not a numerical tuple : openCV error
提问by user3218971
i have write down a code showing error i ma not getting it: Please help: Its showing mat is not a numerical tuple:
我已经写下一个代码，显示错误我可能没有得到它：请帮助：它的显示垫不是数字元组：
import cv
import cv2
capture = cv2.VideoCapture("j.3gp")
while(1):
_, frame1 = capture.read()
grayImage1 = cv2.cvtColor(frame1, cv2.COLOR_BGR2GRAY)
_, frame2 = capture.read()
grayImage2 = cv2.cvtColor(frame2, cv2.COLOR_BGR2GRAY)
differenceImage = cv2.absdiff(grayImage1,grayImage2)
thresholdImage = cv2.threshold(differenceImage,25,255,cv2.THRESH_BINARY)
cv2.imshow("Difference Image", differenceImage)
cv2.imshow("threshold Image", thresholdImage)
cv2.imshow("Image", frame1)
k = cv2.waitKey(30) & 0xff
Error arising :
-----------------------------------------------------------------------------------------
Traceback (most recent call last):
File "Desk.py", line 15, in <module>
cv2.imshow("threshold Image", thresholdImage)
TypeError: mat is not a numerical tuple
回答by user3218971
I got the answer myself: cv2.thresholdreturns two values and adding an extra variable at the start rectifies the error like given below as I did in capture.read()
我自己得到了答案：cv2.threshold返回两个值并在开始时添加一个额外的变量纠正了下面给出的错误，就像我在capture.read()
thresholdImage = cv2.threshold(differenceImage,25,255,cv2.THRESH_BINARY)
should be:
应该：
_ ,thresholdImage = cv2.threshold(differenceImage,25,255,cv2.THRESH_BINARY)
回答by gobrandal
_ ,thresholdImage = cv2.threshold(differenceImage,25,255,cv2.THRESH_BINARY)
_ ,thresholdImage = cv2.threshold(differenceImage,25,255,cv2.THRESH_BINARY)
could also be
也可以
thresholdImage = cv2.threshold(differenceImage,25,255,cv2.THRESH_BINARY)**[1]**
