python multiprocessing with raspberry pi

Question

I am trying to capture a raspberry pi camera image with a multiprocessing module The motion is stopped at the part being captured No error code and just the following code doesn't work. If you know the cause, I would appreciate it.

import cv2 
import cv2 as cv
import numpy as np
import io
from PIL import Image
import time
import picamera
import picamera.array
import RPi.GPIO as GPIO
from picamera.array import PiRGBArray
from datetime import datetime
import math
from multiprocessing import Process, Queue, Manager

camera = picamera.PiCamera()
camera.resolution = (1280, 720)
camera.framerate = 15
camera.iso = 300

def camera1(queue):
    print("1")
    rawCapture = picamera.array.PiRGBArray(camera)
    print("2")
    rawCapture = PiRGBArray(camera, size=(1920, 1080))
    print("3")
    camera.capture(rawCapture, format="bgr")
    print("4")
    image = rawCapture.array
    print("5")
    return image

if __name__ == "__main__":
    GPIO.add_event_detect(Sensor1, GPIO.RISING, bouncetime=800)
    GPIO.add_event_detect(Sensor2, GPIO.FALLING, bouncetime=1000)
    queue = Manager().Queue()
    process1 = Process(target = camera1, args(queue,)

    while True:
        if GPIO.event_detected(Sensor1):
            process1.start()
            process1.join()

It prints until print("3") and does not proceed to the next operation.

question from:https://stackoverflow.com/questions/65929656/python-multiprocessing-with-raspberry-pi

Answer 1

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