我想将Hikvision ip摄像机与python连接,并使用以下代码打开cv:
import numpy as np
import cv2
cap = cv2.VideoCapture()
cap.open("rtsp://yourusername:yourpassword@172.16.30.248:555/Streaming/channels/2/")
while(True):
# Capture frame-by-frame
ret, frame = cap.read()
# Our operations on the frame come here
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
# Display the resulting frame
cv2.imshow('frame',ret)
if cv2.waitKey(1) & 0xFF == ord('q'):
break
# When everything done, release the capture
cap.release()
cv2.destroyAllWindows()
当我运行代码时,出现此错误:
Traceback (most recent call last):
File "C:\Users\Amin\Desktop\ip camera in py\csm.py", line 15, in <module>
cv2.imshow('frame',ret)
cv2.error: OpenCV(4.0.0) c:\projects\opencv-python\opencv\modules\imgproc\src\color.hpp:261: error: (-2:Unspecified error) in function '__cdecl cv::CvtHelper<struct cv::Set<1,-1,-1>,struct cv::Set<3,4,-1>,struct cv::Set<0,2,5>,2>::CvtHelper(const class cv::_InputArray &,const class cv::_OutputArray &,int)'
> Unsupported depth of input image:
> 'VDepth::contains(depth)'
> where
> 'depth' is 6 (CV_64F)
我测试了我的相机VLCPlayer,它运行良好!
我认为问题在于opencv4!
我该如何解决? tnx很多
答案 0 :(得分:1)
错误是您在此处的OpenCV的BOOLEAN
函数中传递了Mat
值而不是imshow()
值:
cv2.imshow('frame',ret)
所以您应该通过框架:
cv2.imshow('frame',frame)
cap.read()
中的 Python
返回两个值,一个是Boolean
,它表示是否成功读取了该帧,第二个是帧本身。因此,应检查ret
是否为true
,然后显示框架。