**There is a my sample kod. I want to do video rendering. For this propose, I wrote two thread one capture the screen from the camera consistently and save to disk and other one take this image from disk and update the my GUI.
I use Tkinter for UI rendering.My problem is starting here. Speed of the refreshing is too low. The image comes to GUI intermittently.I want to use memory for transfer the images to GUI but Tkinter only
allow me using disk, not memory. Do anyone give me any suggestions please? How I solve this problem on memory? :)**
# import the necessary packages
import io
from picamera.array import PiRGBArray
from picamera import PiCamera
import time
import cv2
import sys
import traceback
import threading
from PIL import Image, ImageTk
import numpy as np
# GUI side imports
from Tkinter import *
import os
from shutil import copyfile
class ReaderThread(threading.Thread):
def __init__(self):
super(ReaderThread, self).__init__()
def run(self):
readMe()
class UpdaterThread(threading.Thread):
def __init__(self):
super(UpdaterThread, self).__init__()
def run(self):
renderMe()
def readMe():
for frame in camera.capture_continuous(rawCapture, format="bgr", use_video_port=True):
# grab the raw NumPy array representing the image, then initialize the timestamp
# and occupied/unoccupied text
try:
image = frame.array
cv2.imwrite("photo.jpg",image)
# clear the stream in preparation for the next frame
rawCapture.truncate(0)
except:
exc_type, exc_value, exc_traceback = sys.exc_info()
traceback.print_exception(exc_type, exc_value, exc_traceback)
# initialize the camera and grab a reference to the raw camera capture
sWidth = 800
sHeight = 600
camera = PiCamera()
camera.resolution = (sWidth, sHeight)
camera.framerate = 15
rawCapture = PiRGBArray(camera, size=(sWidth, sHeight))
# allow the camera to warmup
time.sleep(0.1)
mainWindow = Tk()
# Render area definition
renderFrame = Frame(mainWindow, width = 800, height = 600)
renderFrame.grid(row = 0, column = 1, padx = 10, pady =2)
renderLabel = Label(renderFrame)
renderLabel.grid(row = 0, column = 0, padx = 0, pady = 0)
renderLabel.pack()
# update frames on screen
def renderMe():
while 1:
if os.path.isfile("photo.jpg"):
copyfile("photo.jpg", "photo2.jpg")
renderLabel["image"] = ImageTk.PhotoImage(file="photo2.jpg")
key = cv2.waitKey(1) & 0xFF
# if the `q` key was pressed, break from the loop
if key == ord("q"):
camera.close()
break
os.system('exit')
# GUI interaction functions area
def freeMouseChoice():
print "You will choose the mouse my buddy"
def main():
try:
rThread = ReaderThread()
rThread.start()
print "Reader thread started..."
uThread = UpdaterThread()
uThread.start()
print "Updater thread started..."
except:
exc_type, exc_value, exc_traceback = sys.exc_info()
traceback.print_exception(exc_type, exc_value, exc_traceback)
camera.close()
mainWindow.wm_title("Con sinov - Bustard the BEKCI")
mainWindow.config(background = "#000000")
#Preparing toolbar
toolFrame = Frame(mainWindow, width=200, height = 600)
toolFrame.grid(row = 0, column = 0, padx = 10, pady = 2)
mouseChooseButton = Button(toolFrame, text = "Fare Secim", command = freeMouseChoice)
mouseChooseButton.grid(row = 0, column = 0, padx = 5, pady = 2)
#renderLabel.pack()
mainWindow.mainloop()
if __name__ == "__main__":
main()
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