【发布时间】:2019-11-26 02:43:25
【问题描述】:
我正在尝试将我的 Logitech C922 Pro 网络摄像头链接到 Python 并使用 Windows 从中读取,但我收到了一个断言错误。这是我正在使用的代码:
import cv2
import time
cap = cv2.VideoCapture(1)
cap.set(5, 60)
framecount = 0
prevMillis = 0
print(cap.get(5))
def fpsCount():
global prevMillis
global framecount
millis = int(round(time.time() * 1000))
framecount += 1
if millis - prevMillis > 1000:
print(framecount)
prevMillis = millis
framecount = 0
while True:
__, frame = cap.read()
#frame = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
#blur = cv2.blur(frame, (5, 5))
#ret, thresh = cv2.threshold(blur, 170, 255, 0)
cv2.imshow("Image", frame)
fpsCount()
k = cv2.waitKey(1) & 0xff
if k == 27:
break
cap.release()
cv2.destroyAllWindows()
但我得到的错误是:
cv2.imshow("Image", frame)
cv2.error: OpenCV(4.1.2) C:\projects\opencv-python\opencv\modules\highgui\src\window.cpp:376: error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'cv::imshow'
【问题讨论】:
-
看起来
frame的width或height小于0。你能检查frame的尺寸吗?
标签: python python-3.x opencv webcam