Python OpenCV output on Tkinter label deletion -

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i trying delete tkinter label displaying webcam stream made opencv. made happen not way wanted because stops stream last image outputted stream still present. code this:

from tkinter import * import cv2 pil import image, imagetk  def start():     width, height = 800, 600     cap = cv2.videocapture(0)     cap.set(cv2.cv.cv_cap_prop_frame_width, width)     cap.set(cv2.cv.cv_cap_prop_frame_height, height)     def show_frame():         _, frame = cap.read()         frame = cv2.flip(frame, 1)         cv2image = cv2.cvtcolor(frame, cv2.color_bgr2rgba)         img = image.fromarray(cv2image)         imgtk = imagetk.photoimage(image=img)         lmain.imgtk = imgtk         lmain.configure(image=imgtk)         lmain.after(10, show_frame)     show_frame()  root = tk() lmain = label(root) lmain.pack(side = right)  button1 = button(root, text = "start", command = start) button1.pack(side = left) button2 = button(root, text = "stop", command = start) button2.pack(side = left)  root.mainloop()

you may notice function used stop same function used start it, because clueless on how stop it.

i have tried code, , add code here:

from tkinter import * import cv2 pil import image, imagetk  isrunning = 0 def start():     global isrunning     if isrunning == 0:         width, height = 800, 600         cap = cv2.videocapture(0)         cap.set(cv2.cv.cv_cap_prop_frame_width, width)         cap.set(cv2.cv.cv_cap_prop_frame_height, height)         isrunning = 1         lmain.pack(side = right)          def show_frame():             _, frame = cap.read()             frame = cv2.flip(frame, 1)             cv2image = cv2.cvtcolor(frame, cv2.color_bgr2rgba)             img = image.fromarray(cv2image)             imgtk = imagetk.photoimage(image=img)             lmain.imgtk = imgtk             lmain.configure(image=imgtk)             if isrunning == 1:                 lmain.after(10, show_frame)      show_frame()  def stop():     global isrunning     isrunning = 0     lmain.pack_forget()  root = tk() lmain = label(root)  button1 = button(root, text = "start", command = start) button1.pack(side = left) button2 = button(root, text = "stop", command = stop) button2.pack(side = left)  root.mainloop()

you can find add global variable isrunning let function show_frame check every time. if variable isrunning equal 0, function stop. , add function stop callback function of "stop" button contains code lmain.pack_forget() remove label.

since label removed every time when click "stop" button, move code adding label start function. hope helps.


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