camera_barcode.py

from imutils.video import VideoStream
from pyzbar import pyzbar
import argparse
import datetime
import imutils
import time
import cv2
def scan():



	ap = argparse.ArgumentParser()
	ap.add_argument("-o", "--output", type=str, default="barcodes.csv",
		help="path to output CSV file containing barcodes")
	args = vars(ap.parse_args())

	print("[INFO] starting video stream...")
	vs = VideoStream(src=0).start()
	#vs = VideoStream(usePiCamera=True).start()
	time.sleep(2.0)




	while True:
		frame = vs.read()
		frame = imutils.resize(frame, width=400)

		barcodes = pyzbar.decode(frame)

		for barcode in barcodes:
			(x, y, w, h) = barcode.rect
			cv2.rectangle(frame, (x, y), (x + w, y + h), (0, 0, 255), 2)

			barcodeData = barcode.data.decode("utf-8")
			barcodeType = barcode.type

			text = "{} ({})".format(barcodeData, barcodeType)
			cv2.putText(frame, text, (x, y - 10),
				cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 255), 2)



		cv2.imshow("Barcode Scanner", frame)
		key = cv2.waitKey(1) & 0xFF

		if key == ord("q"):
			break

	print("[INFO] cleaning up...")

	cv2.destroyAllWindows()
	vs.stop()