Updated README

Author: anisha282000

Image-Processing/Invisible_cloak/README.md

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+# Invisible Cloak
+This is a python script about the cloak of invisibility which was used by harry to become invisible.
+
+## How it works
+* It captures and store the background.
+* Detect the defined color using color detection.
+* Segment out the red colored cloth by generating a mask. 
+* Generate the final augmented output to create a magical effect.
+
+## Installation
+* Use the package manager [pip](https://pip.pypa.io/en/stable/) to install Opencv.
+
+```bash
+pip install opencv-python
+``` 
+* Install Numpy
+
+```bash
+pip install numpy
+```