使用 python 连接到 Hikvision Camera 并打开 cv

Connecting to Hikvision Camera using python and open cv

我想将 Hikvision 网络摄像机与 python 连接并使用此代码打开 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 我的代码出现这个错误时:

    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)

我用 VLCPlayer 测试了我的相机,它运行完美!

我认为问题与opencv4有关!

我该如何解决? tnx 很多

错误是您在 OpenCV 的 imshow() 函数中传递 BOOLEAN 值而不是 Mat 值:

cv2.imshow('frame',ret)

所以你应该通过框架:

cv2.imshow('frame',frame)

cap.read() in Python returns 两个值,一个是Boolean表示帧是否读取成功,第二个是帧本身.所以你应该检查 ret 如果它是 true,然后显示框架。