I tried to dynamically display multi live camera in python tkinter with threads. But I have a FPS problem and performance unfortunately bad. The program use to ip camera links dynamically create ui and then frame using in threads. But despite to using threads, performance not satisfactory. How can I improve performance ?
from functools import partial
from PIL import Image, ImageTk
import tkinter as tk
from tkinter import messagebox
from tkinter import font as tkFont
import argparse
import datetime
import cv2
import imutils
import os
from threading import Thread
variable = 1
threads = []
camera_urls = ['rtsp://mycamera1.cgi', 'mycamera2.cgi']
video_captures=[]
video_panels=[]
video_currentImages=[]
snaphsot_display_panels=[]
video_labels=[]
class Application:
def __init__(self, output_path="./"):
self.output_path = output_path
self.current_image = None
self.root = tk.Tk()
self.root.title("Kamera")
self.root.protocol('WM_DELETE_WINDOW', self.destructor)
for indexofUrl in range(len(camera_urls)):
print("[INFO] URL::" + camera_urls[indexofUrl])
self.vs = cv2.VideoCapture(camera_urls[indexofUrl])
video_captures.append(self.vs)
self.panel = tk.Label(self.root, borderwidth=5, relief="sunken", bg="green")
self.panel.grid(row=0, column=indexofUrl, padx=20, pady=20)
video_panels.append(self.panel)
print("[INFO] STEP:: 1")
mylabel = tk.Label(text="Kamera " +str(indexofUrl), bg="black", fg="white", font=(None, 15))
mylabel.grid(row=1, column=indexofUrl)
print("[INFO] STEP:: 2")
btn = tk.Button(self.root, text="Görüntüyü kaydet(Kamera "+str(indexofUrl)+")", command=partial(self.take_snapshot,indexofUrl), bg="green", fg='white')
btn.grid(row=2, column=indexofUrl, padx=20, pady=20)
print("[INFO] STEP:: 3")
self.panel3 = tk.Label(self.root)
self.panel3.grid(row=3, column=indexofUrl)
print("[INFO] STEP:: 4")
self.mylabel2 = tk.Label(text="Snapshot bilgileri:", bg="blue", fg="white", font=(None, 15))
self.mylabel2.grid(row=4, column=indexofUrl)
video_labels.append(self.mylabel2)
print("[INFO] STEP:: 5")
self.panel4 = tk.Label(self.root,relief="sunken", borderwidth=5, bg="black")
self.panel4.grid(row=5, column=indexofUrl, padx=20, pady=20)
snaphsot_display_panels.append(self.panel4)
mythread = Thread(target=self.my_video_loop, args=())
mythread.daemon = True
mythread.start()
threads.append(mythread)
for t in threads:
t.join()
#self.my_video_loop()
self.thread2 = Thread(target= self.my_video_loop, args=())
self.thread2.daemon=True
self.thread2.start()
def my_video_loop(self):
for indexOfVideCaptures in range(len(video_captures)):
ok, frame= video_captures[indexOfVideCaptures].read()
frame=self.maintain_aspect_ratio_resize(frame , width=400)
if ok:
if len(video_currentImages) > len(camera_urls):
video_currentImages.clear()
cv2image = cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)
self.current_image = Image.fromarray(cv2image)
video_currentImages.append(self.current_image)
imgtk = ImageTk.PhotoImage(image=self.current_image)
video_panels[indexOfVideCaptures].imgtk =imgtk
video_panels[indexOfVideCaptures].config(image=imgtk)
self.root.after(30, self.my_video_loop)
# Resizes a image and maintains aspect ratio
def maintain_aspect_ratio_resize(self, image, width=None, height=None, inter=cv2.INTER_AREA):
# Grab the image size and initialize dimensions
dim = None
(h, w) = image.shape[:2]
# Return original image if no need to resize
if width is None and height is None:
return image
# We are resizing height if width is none
if width is None:
# Calculate the ratio of the height and construct the dimensions
r = height / float(h)
dim = (int(w * r), height)
# We are resizing width if height is none
else:
# Calculate the ratio of the 0idth and construct the dimensions
r = width / float(w)
dim = (width, int(h * r))
# Return the resized image
return cv2.resize(image, dim, interpolation=inter)
def take_snapshot(self, camera):
ts = datetime.datetime.now() # current timestamp
filename = "{}.png".format(ts.strftime("%Y-%m-%d__%H-%M-%S")) #filename
p = os.path.join(self.output_path, filename) # output path
if camera >= 0:
if len(video_currentImages) == 0:
self.take_snapshot(camera)
# self.root.after(500, self.take_snapshot(camera))
elif len(video_currentImages) == len(camera_urls):
video_currentImages[camera].save(p, "PNG") # save image as jpeg file
print("[INFO] saved {}".format(filename))
imgtk3 = ImageTk.PhotoImage(image=video_currentImages[camera])
snaphsot_display_panels[camera].imgtk =imgtk3
snaphsot_display_panels[camera].config(image=imgtk3)
video_labels[camera].config(text=filename.rstrip(".png") + f"\n KAMERA {camera}")
def destructor(self):
""" Destroy the root object and release all resources """
print("[INFO] closing...")
self.root.destroy()
for indexcameras in range(len(video_captures)):
video_captures[indexcameras].release() # release camera
cv2.destroyAllWindows() # it is not mandatory in this application
# construct the argument parse and parse the arguments
ap = argparse.ArgumentParser()
ap.add_argument("-o", "--output", default="./",
help="path to output directory to store snapshots (default: current folder")
args = vars(ap.parse_args())
# start the app
print("[INFO] starting...")
pba = Application(args["output"])
pba.root.mainloop()
