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How to integrate barcode scanner with tkinter GUI application in python?

When I run the below code. The camera opens and we can read the barcode. What I need is that the camera window remains at the side of my Tkinter GUI application rather than poping up. Here's the code
from imutils.video import VideoStream
from pyzbar import pyzbar
import argparse
import datetime
from datetime import datetime
import imutils
import time
import cv2
import winsound
frequency = 600 # Set Frequency To 2500 Hertz
duration = 800 # Set Duration To 1000 ms == 1 second
ap = argparse.ArgumentParser()
ap.add_argument("-o", "--output", type=str, default="barcodesData.csv",
help="path to output CSV file ")
args = vars(ap.parse_args())
print("Starting webcam")
vs = VideoStream(src=0).start()
time.sleep(2.0)
csvWrite = open(args["output"], "w")
found = set()
while True:
frameData = vs.read()
frameData = imutils.resize(frameData, width=600)
barcodes = pyzbar.decode(frameData)
for barcode in barcodes:
(x, y, width, height) = barcode.rect
cv2.rectangle(frameData, (x, y), (x + width, y + height), (0, 0, 255), 2)
barcodeData = barcode.data.decode("utf-8")
barcodeType = barcode.type
textData = "{} ({})".format(barcodeData, barcodeType)
cv2.putText(frameData, textData, (x, y - 10),
cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 255), 2)
if barcodeData not in found:
csvWrite.write("{},{}\n".format(datetime.today().strftime('%Y-%m-%d'),
barcodeData))
csvWrite.flush()
found.add(barcodeData)
winsound.Beep(frequency, duration)
cv2.imshow("Barcode Scanner", frameData)
key = cv2.waitKey(1) & 0xFF
if key == ord("e"):
break
# close the output CSV file do a bit of cleanup
print("\nWait while we calculate cost...")
csvWrite.close()
cv2.destroyAllWindows()
vs.stop()
time.sleep(1.0)
TO be specific. I'm making a billing software where I can read the barcodes of the products and make a bill. The camera separate screen is annoying so if the camera is on any side of the canvas all the time. It would be more quick.

I encoded the IDs of each product/item in my database in a QR code. When that particular item is being sought for, I used CV2 to detect and decode the QR code.
Here is the code:
def encode_qr():
import qrcode
import random as r
item_code = r.randint(00000000,99999999)
data = item_code
qrfile = "qr_image_name_for_specified_item.png"
# generate qrcode
qrimage = qrcode.make(data)
# save image
fl = qrimage.save(qrfile)
print("Done generating qrcode")
def decode_qr():
import cv2
filename="qr_image_name_for_specified_item.png"
# alternatively webcam cv2.VideoCapture(0)
# read image
image = cv2.imread(filename)
# initialize qrcode detector
detector = cv2.QRCodeDetector()
# detect and decode
info, v_array, binary_qrcode=detector.detectAndDecode(image)
# if null?
if v_array is None:
print("No qrcode detected or probably some technical issues occurred")
else:
print("QRCODE data")
print(info)
# below i am working with the import sqlite3 as sql3
sqldb = sql3.connect("your_database.db")
cur = sqldb.cursor()
cur.execute("select * from table where ID=?, (info,))
rows = cur.fetchall()
for r in rows:
print(r) # this will loop all the item details with the itemcode
print(r[1]) # a specific detail with the item_code

Recording video in specified time intervals and then saving them into file OpenCv Python

Here are my goals.
Capture video continuously until 'q; is pressed
Every ten seconds save the video in created directory file
Continue step two until 'q' is pressed
I am executing the following code. But when creating files it's creating 6kb files and saying cannot play. I am fairly new to opencv and python. Not sure what I am missing. Running this code on pycharm with Python 3.6. Also the
cv2.imshow('frame',frame)
stops after ten seconds but recording is happening in background and files are created.
import numpy as np
import cv2
import time
import os
import random
import sys
fps=24
width=864
height=640
video_codec=cv2.VideoWriter_fourcc('D','I','V','X')
name = random.randint(0,1000)
print (name)
if (os.path.isdir(str(name)) is False):
name = random.randint(0,1000)
name=str(name)
name = os.path.join(os.getcwd(), str(name))
print('ALl logs saved in dir:', name)
os.mkdir(name)
cap = cv2.VideoCapture(0)
ret=cap.set(3, 864)
ret=cap.set(4, 480)
cur_dir = os.path.dirname(os.path.abspath(sys.argv[0]))
start=time.time()
video_file_count = 1
video_file = os.path.join(name, str(video_file_count) + ".avi")
print('Capture video saved location : {}'.format(video_file))
while(cap.isOpened()):
start_time = time.time()
ret, frame = cap.read()
if ret==True:
cv2.imshow('frame',frame)
if (time.time() - start > 10):
start = time.time()
video_file_count += 1
video_file = os.path.join(name, str(video_file_count) + ".avi")
video_writer = cv2.VideoWriter(video_file,video_codec, fps,(int(cap.get(3)),int(cap.get(4))))
time.sleep(10)
if cv2.waitKey(1) & 0xFF == ord('q'):
break
else:
break
cap.release()
cv2.destroyAllWindows()
I want files with the recorded videos. Files are generated but size 6kb and nothing is being recorded.

You're almost there! Given that I understood what your goal is, and with minimal change to your code, here is what worked for me.
This writes a new video file every ten seconds while recording each frame into the current video.
import numpy as np
import cv2
import time
import os
import random
import sys
fps = 24
width = 864
height = 640
video_codec = cv2.VideoWriter_fourcc("D", "I", "V", "X")
name = random.randint(0, 1000)
print(name)
if os.path.isdir(str(name)) is False:
name = random.randint(0, 1000)
name = str(name)
name = os.path.join(os.getcwd(), str(name))
print("ALl logs saved in dir:", name)
os.mkdir(name)
cap = cv2.VideoCapture(0)
ret = cap.set(3, 864)
ret = cap.set(4, 480)
cur_dir = os.path.dirname(os.path.abspath(sys.argv[0]))
start = time.time()
video_file_count = 1
video_file = os.path.join(name, str(video_file_count) + ".avi")
print("Capture video saved location : {}".format(video_file))
# Create a video write before entering the loop
video_writer = cv2.VideoWriter(
video_file, video_codec, fps, (int(cap.get(3)), int(cap.get(4)))
)
while cap.isOpened():
start_time = time.time()
ret, frame = cap.read()
if ret == True:
cv2.imshow("frame", frame)
if time.time() - start > 10:
start = time.time()
video_file_count += 1
video_file = os.path.join(name, str(video_file_count) + ".avi")
video_writer = cv2.VideoWriter(
video_file, video_codec, fps, (int(cap.get(3)), int(cap.get(4)))
)
# No sleeping! We don't want to sleep, we want to write
# time.sleep(10)
# Write the frame to the current video writer
video_writer.write(frame)
if cv2.waitKey(1) & 0xFF == ord("q"):
break
else:
break
cap.release()
cv2.destroyAllWindows()

A sign that the videos are being received at 6 kb, an error with the codec. You need to download opencv_ffmpeg.dll and place it in the Python3.2.1 folder and renamed to opencv_ffmpeg321.dll
This solved the problem for me, and before that, 5.6 kb videos were created, regardless of what I do. But the problem is deeper than it seems, it can still be connected with a mismatch in the resolution of the stream and the recording.
For OpenCV version X.Y.Z
opencv_ffmpeg.dll ==> opencv_ffmpegXYZ.dll
For 64-bit version of OpenCV X.Y.Z
opencv_ffmpeg.dll ==> opencv_ffmpegXYZ_64.dll

How to access Wireless Camera from IP webcam via open cv ?

import cv2
import urllib
import numpy as np
stream=urllib.urlopen('http://192.168.1.5:8080/frame.mjpg')
bytes=''
while True:
bytes+=stream.read(1024)
a = bytes.find('\xff\xd8')
b = bytes.find('\xff\xd9')
if a!=-1 and b!=-1:
jpg = bytes[a:b+2]
bytes= bytes[b+2:]
i = cv2.imdecode(np.fromstring(jpg, dtype=np.uint8),cv2.CV_LOAD_IMAGE_COLOR)
cv2.imshow('i',i)
if cv2.waitKey(1) ==27:
exit(0)
The code is not throwing any error too,I have set No authentication in IPWebcam.
Its throwing error Connection Refused

try this:
import urllib
import cv2
import numpy as np
import time
# Replace the URL with your own IPwebcam shot.jpg IP:port
url='http://192.168.20.108:8080/shot.jpg'
while True:
# Use urllib to get the image from the IP camera
imgResp = urllib.urlopen(url)
# Numpy to convert into a array
imgNp = np.array(bytearray(imgResp.read()),dtype=np.uint8)
# Finally decode the array to OpenCV usable format ;)
img = cv2.imdecode(imgNp,-1)
# put the image on screen
cv2.imshow('IPWebcam',img)
#To give the processor some less stress
#time.sleep(0.1)
# Quit if q is pressed
if cv2.waitKey(1) & 0xFF == ord('q'):
break

How can i find optical flow of a live video stream (Android IPWebcam) in OpenCV Python?

I have written a code which works fine for a recorded video or video from webcam of my laptop.. but i need it to work with video directly from my phone.. Now i have been able to get video from phone and show it through python. But i need frames of this video to apply OpticalFlow function on it. (calcOpticalFlowFarneback).. Here's my two codes. i'll be thankful for your help.
This is code for getting video from android phone's camera to python
import cv2
import urllib2
import numpy as np
import sys
host = "192.168.1.2:8080"
if len(sys.argv)>1:
host = sys.argv[1]
hoststr = 'http://' + host + '/video'
print 'Streaming ' + hoststr
stream=urllib2.urlopen(hoststr)
bytes=''
while True:
bytes+=stream.read(1024)
a = bytes.find('\xff\xd8')
b = bytes.find('\xff\xd9')
if a!=-1 and b!=-1:
jpg = bytes[a:b+2]
bytes= bytes[b+2:]
i = cv2.imdecode(np.fromstring(jpg, dtype=np.uint8),cv2.IMREAD_COLOR)
cv2.imshow(hoststr,i)
if cv2.waitKey(1) ==27:
exit(0)
And this one is relevant portion for motion flow, notice i need frames from video
vid=cv2.VideoCapture('vidaflv.flv')
ret, frame = vid.read()
imgrayp = cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)
while True:
ret, frame = vid.read()
if ret:
imgray = cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)
flow = cv2.calcOpticalFlowFarneback(imgrayp,imgray,None,0.5,3,15,3,5,1.2,0)
cv2.imshow('Optical flow',draw_flow(frame,flow))
imgrayp=imgray
if cv2.waitKey(1)==ord('e'):
break
what i can't figure out is how to get a frame from live stream video code to put in my optical flow fuction..

Withourt being able to test this, I'd try something like:
import cv2
import urllib2
import numpy as np
import sys
host = "192.168.1.2:8080"
if len(sys.argv)>1:
host = sys.argv[1]
hoststr = 'http://' + host + '/video'
print 'Streaming ' + hoststr
stream=urllib2.urlopen(hoststr)
bytes=''
FirstTime=True
while True:
bytes+=stream.read(1024)
a = bytes.find('\xff\xd8')
b = bytes.find('\xff\xd9')
if a!=-1 and b!=-1:
jpg = bytes[a:b+2]
bytes= bytes[b+2:]
i = cv2.imdecode(np.fromstring(jpg, dtype=np.uint8),cv2.IMREAD_COLOR)
if FirstTime=True:
FirstTime=False
imgrayp = cv2.cvtColor(i,cv2.COLOR_BGR2GRAY)
imgray = cv2.cvtColor(i,cv2.COLOR_BGR2GRAY)
flow = cv2.calcOpticalFlowFarneback(imgrayp,imgray,None,0.5,3,15,3,5,1.2,0)
cv2.imshow('Optical flow',draw_flow(frame,flow))
if cv2.waitKey(1) ==27:
exit(0)

Opencv two camera source

I am working with opencv and have two video source. I am using the following code. The code works sometimes and sometimes it does not work. Is there a problem with my code. How can I make the amends...
import cv2
Channel0 = cv2.VideoCapture(0)
IsOpen0, Image0 = Channel0.read()
Channel1 = cv2.VideoCapture(1)
IsOpen1, Image1 = Channel1.read()
while IsOpen0 and IsOpen1:
IsOpen0, Image0 = Channel0.read()
IsOpen1, Image1 = Channel1.read()
cv2.imshow("Webcamera",Image0)
cv2.imshow("Panasonic",Image1)
cv2.waitKey(10)
PS It always works when I use only one video source.

I think I figured out my error. For some reason the following code works. It must have been problem with threading...
import thread
import time
import cv2
def Webcamera():
Channel0 = cv2.VideoCapture(0)
IsOpen0, Image0 = Channel0.read()
while IsOpen0:
IsOpen0, Image0 = Channel0.read()
cv2.imshow("Webcamera",Image0)
cv2.waitKey(10)
if not IsOpen0:
time.delay(0.5)
print "Error opening Web camera"
def Panasonic():
Channel1 = cv2.VideoCapture(1)
IsOpen1, Image1 = Channel1.read()
while IsOpen1:
IsOpen1, Image1 = Channel1.read()
cv2.imshow("Panasonic",Image1)
cv2.waitKey(10)
if not IsOpen1:
time.sleep(0.5)
print "Error opening Panasonic"
try:
thread.start_new_thread(Webcamera,())
thread.start_new_thread(Panasonic,())
except:
print "Error: unable to start thread"
while 1:
pass