Do you ever think, how Facebook can automatically tag your friend when you upload an image, how your smart phone can recognize you, using it's very advanced and accurate  Face recognition feature.  Have you ever thought how a picture is processed by computer , how a picture  is stored in computer  etc.   These are very few examples, many more will be discussed as we go on, of Computer Vision. Well, In this post we are going to discuss about Computer Vision. So let's get started. What is C omputer Vision ? Computer Vision is a  interdisciplinary field that helps computer to make high-level understanding from digital images and videos to automate the task that human visuals do. It use some techniques  by which computer can understand many useful information from an image and perform some action based on that information. We see an image and our brain can understand the message, delivered by the image. Machines do exactly the same thing. ...

Have you ever seen Harry Potter’s   Invisible Cloak   If not then let's have a look.     Was it wonderful? Do you surprised how this can be possible? If yes, then this post is going to help you. You will be able to make such invisible cloak by your own but yes, not in real way but it is all about graphics . Algorithm behind the idea First, we take the background frame ( for some second ) and store in the memory. Then, we will take the frame with cloth. Then, detect and segment the portion of the cloth of pre-determined color. For Example here we will use Red. [ known as Color Detection and Image Segmentation ] Then, that segment will be replaced by the background , we have stored in the memory, segment. At last, create the final image to make the magic. Note: All the things will be done in python due to the availability of the various libraries mainly numpy . Python Code: First of all, importing all the required librar...