From bd7cd64cee5f1ddc28e8e24e67b0aba393a4b3a3 Mon Sep 17 00:00:00 2001
From: jackyOO7 <44204857+jackyOO7@users.noreply.github.com>
Date: Tue, 16 Oct 2018 17:26:26 +0200
Subject: [PATCH 1/2] Colour Image OpenCV->PySimpleGUI

I think I found a nicer way to do it.
PySimpleGUI is really neat, thank you for your hard work!
Cheers
jacky
---
 Demo_OpenCV_Webcam.py | 23 ++++++-----------------
 1 file changed, 6 insertions(+), 17 deletions(-)

diff --git a/Demo_OpenCV_Webcam.py b/Demo_OpenCV_Webcam.py
index c21eaea0..006c2c47 100644
--- a/Demo_OpenCV_Webcam.py
+++ b/Demo_OpenCV_Webcam.py
@@ -4,10 +4,8 @@ if sys.version_info[0] >= 3:
     import PySimpleGUI as sg
 else:
     import PySimpleGUI27 as sg
-import cv2 as cv
-from PIL import Image
+import cv2
 import numpy as np
-import io
 from sys import exit as exit
 
 """
@@ -31,7 +29,7 @@ def main():
     window.Layout(layout).Finalize()
 
     # ---===--- Event LOOP Read and display frames, operate the GUI --- #
-    cap = cv.VideoCapture(0)
+    cap = cv2.VideoCapture(0)
     recording = False
     while True:
         event, values = window.ReadNonBlocking()
@@ -42,10 +40,8 @@ def main():
             recording = True
         elif event == 'Stop':
             recording = False
-            img = Image.new('RGB', (640, 480), (255, 255, 255))
-            bio = io.BytesIO()  # a binary memory resident stream
-            img.save(bio, format='PNG')  # save image as png to it
-            imgbytes = bio.getvalue()
+            img = np.full((480, 640),255)
+            imgbytes=cv2.imencode('.png', img)[1].tobytes() #this is faster, shorter and needs less includes
             window.FindElement('image').Update(data=imgbytes)
         elif event == 'About':
             sg.PopupNoWait('Made with PySimpleGUI',
@@ -56,14 +52,7 @@ def main():
                            keep_on_top=True)
         if recording:
             ret, frame = cap.read()
-
-            gray = cv.cvtColor(frame, cv.COLOR_BGR2GRAY)
-
-            # let img be the PIL image
-            img = Image.fromarray(gray)  # create PIL image from frame
-            bio = io.BytesIO()  # a binary memory resident stream
-            img.save(bio, format= 'PNG')  # save image as png to it
-            imgbytes = bio.getvalue()  # this can be used by OpenCV hopefully
+            imgbytes=cv2.imencode('.png', cv2.cvtColor(frame,cv2.COLOR_BGR2RGB))[1].tobytes() #ditto
             window.FindElement('image').Update(data=imgbytes)
 
-main()
\ No newline at end of file
+main()

From 03ef2aae4ee6ced6598600fa7cdcc4e9a21b3ea1 Mon Sep 17 00:00:00 2001
From: jackyOO7 <44204857+jackyOO7@users.noreply.github.com>
Date: Wed, 17 Oct 2018 07:38:53 +0200
Subject: [PATCH 2/2] Colour fix

fixed the colours. cvtColor is not needed here as openCV takes care of the BGR issue when saving to PNG.
---
 Demo_OpenCV_Webcam.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Demo_OpenCV_Webcam.py b/Demo_OpenCV_Webcam.py
index 006c2c47..c6fb89c3 100644
--- a/Demo_OpenCV_Webcam.py
+++ b/Demo_OpenCV_Webcam.py
@@ -52,7 +52,7 @@ def main():
                            keep_on_top=True)
         if recording:
             ret, frame = cap.read()
-            imgbytes=cv2.imencode('.png', cv2.cvtColor(frame,cv2.COLOR_BGR2RGB))[1].tobytes() #ditto
+            imgbytes=cv2.imencode('.png', frame)[1].tobytes() #ditto
             window.FindElement('image').Update(data=imgbytes)
 
 main()