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我期待视频捕捉刷新屏幕。当它不是一个班,它按我的预期工作。然后我将它转换为oop -below。 它没有刷新......然后我预计“之后”会做这项工作。显然,我不明白如何工作后?它不会在下面调用 - root.vidImg.vid()。如果是,为什么self.cap = cv2.VideoCapture(0)不捕获并显示新图像? 感谢提前为什么捕捉视频不会在tkinter循环中刷新?
这里是我的代码来帮助...
import tkinter as tk
from PIL import Image, ImageTk
import cv2
class Window(tk.Tk):
def __init__(self):
tk.Tk.__init__(self)
self.videoFrm = tk.Frame(self, width=480, bg='yellow', height=320)
self.videoFrm.grid(row=0, column=0, sticky=tk.NW)
self.vidImg = cnvs(self.videoFrm,self)
self.vidImg.grid()
class cnvs(tk.Frame):
def __init__(self,parent,controller):
tk.Frame.__init__(self,parent)
self.controller = controller
self.canvas = tk.Canvas(self, width=480, height=320, bg='green')
self.canvas.grid()
def vid(self):
# Capture video frames
self.cap = cv2.VideoCapture(0)
_, self.frame = self.cap.read()
self.img = cv2.flip(self.frame, 1)
self.cv2image = cv2.cvtColor(self.img, cv2.COLOR_BGR2RGBA)
self.cv2image = cv2.resize(self.cv2image, (0, 0), fx=0.2, fy=0.2)
self.img = Image.fromarray(self.cv2image)
self.imgtk = ImageTk.PhotoImage(image=self.img)
self.canvas.create_image(10, 10, anchor=tk.NW, image=self.imgtk)
def main():
root = Window()
root.after(0, root.vidImg.vid())
root.mainloop()
if __name__ == '__main__':
main()
谢谢你的两条建议;运作良好 –
@Ekmel,不客气!请[接受答案](https://meta.stackexchange.com/a/5235/361431)表明您的问题已解决;) – Josselin