Background subtraction in processing<title> </head> <body bgcolor="#ffffff"> <h1>Background subtraction in <a href="http://processing.org">processing</a></h1> This is some sample code to show a moderately sophisticated background subtraction algorithm in <a href="http://processing.org">Processing</a> <p> I used this code in my <a href="../../../isea2006/workshop.html">ISEA/San Jose Zero One workshop on "Computer vision for Artists"</a> <p> it's not meant to be fast, more to demonstrate the principles, from frame differencing and adaptation to morphology and connected components. The code is designed to use <a href="http://webcamxtra.sourceforge.net/">JMyron</a> by Josh Nimoy, but could be adapted to use the video module of processing. I've designed some of my own new classes but it's based around the pimage class of processing. <p> I am making the code publicly available in gratitude for all the great free software out there, in particular processing and JMyron. You are welcome to use the code for your own projects, just preserve the attribution in the code, and please credit me and link to my web site where possible. <p> The code can be found in a <a href="backgroundsubtraction.zip">zip file here </a> or as individual files: <ul> <li><a href="backgroundsubtraction.pde">backgroundsubtraction.pde</a> the main code - gets images from the web cam and displays results. <li><a href="pbgs.pde">pbgs.pde</a> the BGS code - an adaptive BGS algorithm. <li><a href="pconcomps.pde">pconcomps.pde</a> connected components code label components and remove small ones <li><a href="pimageoperations.pde">pimageoperations.pde</a> Some basic operations on pimages- copying , subtracting etc. includes morphology. </ul> Note that you will have to edit the code to use the correct image size- I have a webcam that uses 352x240 by default.<p> See also the simple <a href="../">keepmax</a> program using JMyron and processing.<p> <a href="../../../home.html">Home page</a> <hr> <address><a href="../../../contact.html">Andrew Senior</a></address> </body> </html>