Update README.md

AdityaPai2398 · web-flow · commit e292754b39d6 · 2019-01-07T20:39:57.000+05:30
diff --git a/README.md b/README.md
@@ -17,7 +17,17 @@ Initially we need to resize the images so OpenCV can handle it and then the foll
 ## This is shit, why did you build this?
 I was BORED :/ 
 
-# INSTALLATION 
+# Installation
 ```
 pip install opencv-python
 ```
+
+## Credits 
+
+1) Guassian Blur : https://docs.opencv.org/3.1.0/d4/d13/tutorial_py_filtering.html
+2) SO article on guassian Blur https://computergraphics.stackexchange.com/questions/39/how-is-gaussian-blur-implemented
+3) Vipul Sharma Github : https://github.com/vipul-sharma20/document-scanner
+4) Canny Edge Deetction  https://opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_imgproc/py_canny/py_canny.html
+5)Contours Documentation :  https://docs.opencv.org/3.1.0/d4/d73/tutorial_py_contours_begin.html
+6) ArcLength Documentation:  https://docs.opencv.org/3.1.0/dd/d49/tutorial_py_contour_features.html
+7) Perspective Transform Pyimage Search Tutorial https://www.pyimagesearch.com/2014/08/25/4-point-opencv-getperspective-transform-example/
