diff --git a/app/__pycache__/__init__.cpython-37.pyc b/app/__pycache__/__init__.cpython-37.pyc
index 3902cd6..d576318 100644
Binary files a/app/__pycache__/__init__.cpython-37.pyc and b/app/__pycache__/__init__.cpython-37.pyc differ
diff --git a/app/__pycache__/effects.cpython-37.pyc b/app/__pycache__/effects.cpython-37.pyc
index 74121d8..0e772c7 100644
Binary files a/app/__pycache__/effects.cpython-37.pyc and b/app/__pycache__/effects.cpython-37.pyc differ
diff --git a/app/__pycache__/routes.cpython-37.pyc b/app/__pycache__/routes.cpython-37.pyc
index 524f31b..363f019 100644
Binary files a/app/__pycache__/routes.cpython-37.pyc and b/app/__pycache__/routes.cpython-37.pyc differ
diff --git a/app/effects.py b/app/effects.py
index d4ae88d..c5b6569 100644
--- a/app/effects.py
+++ b/app/effects.py
@@ -7,7 +7,7 @@ class effects_lib (object):
     ds_factor = 0.8
     
     def __init__(self):
-        self.video = cv2.VideoCapture(0)
+        self.video = cv2.VideoCapture(0,cv2.CAP_DSHOW) # added second parameter to resolve the terminating async callback warning
 
     def __del__(self):
         self.video.release()
@@ -55,8 +55,8 @@ def warming_effect(self):
     def edge_detection(self):
         frame_status, frame = self.video.read()
         #modify frame here
-
-
+        frame = cv2.Canny(frame,100,200)
+        
         frame = cv2.resize(frame,None, fx = self.ds_factor, fy = self.ds_factor, interpolation = cv2.INTER_AREA)
         ret, jpeg = cv2.imencode(".jpg", frame)
         return jpeg.tobytes()
@@ -112,4 +112,3 @@ def black_and_white_sketch(self):
         frame = cv2.resize(frame,None, fx = self.ds_factor, fy = self.ds_factor, interpolation = cv2.INTER_AREA)
         ret, jpeg = cv2.imencode(".jpg", frame)
         return jpeg.tobytes()
-