我有一个在循环内执行 cv2.VideoCapture 的代码。这使得代码不断检查摄像头是否打开,这是摄像头未按应有的方式显示视频片段的原因。我在循环中有 cv2.VideoCapture,这样我就可以检测相机是否已连接。有没有办法解决这个问题,有什么方法可以检查我的网络摄像头是否已连接?
我尝试过多线程等,以获得进一步的成功。
一些代码:
from tkinter import * # Import the tkinter module (For the Graphical User Interface)
import cv2 # Import the cv2 module for web camera footage
import PIL # Import the pillow library for image configuration.
from PIL import Image, ImageTk # Import the specifics for Image configuration.
print("[INFO] Imports done")
width, height = 800, 600 # Define The width and height widget for cap adjustment
RootGeometry = str(width) + "x" + str(height) # Make a variable to adjust tkinter frame
print("[INFO] Geometries made")
ImageSource = 0
cap = cv2.VideoCapture(ImageSource) # First VideoCapture
cap.set(cv2.CAP_PROP_FRAME_WIDTH, width)
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, height)
print("[INFO] Cap set")
root = Tk()
print("[INFO] Window made")
root.title("Main Window")
root.configure(background="white")
root.geometry(RootGeometry)
root.bind('<Escape>', lambda e: root.quit())
lmain = Label(root)
lmain.pack()
print("[INFO] Configuration of cap done.")
def ShowFrame():
ok, frame = cap.read()
if ok:
print("[INFO] Show frame Initialized.")
cv2image = cv2.cvtColor(frame, cv2.COLOR_BGR2RGBA)
img = PIL.Image.fromarray(cv2image)
imgtk = ImageTk.PhotoImage(image=img)
lmain.imgtk = imgtk
lmain.configure(image=imgtk)
print("[INFO] After 10 initializing")
lmain.after(10, ShowFrame)
print("[INFO] Showed image")
else:
lmain.after(10, CheckSource)
def CheckSource():
print("[INFO] CheckSource Triggered.")
capture = cv2.VideoCapture(ImageSource)
if capture.isOpened():
print("[INFO] [DEBUG] if Ok initialized")
if cv2.waitKey(1) & 0xFF == ord('q'):
cv2.destroyAllWindows()
cv2.waitKey(0)
print("[WARNING] Exiting app after command")
ShowFrame()
else:
print("[WARNING] No source found. Looking for source.")
lmain.after(10, CheckSource)
CheckSource()
root.mainloop()
任何和所有的帮助将非常感激!
最佳答案
可以用下面的方法检查吗
cap.isOpened()
关于python - 有没有比 cv2.videocapture 不同的方法来检查相机状态?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58156557/