Video Feedback Overview Video feedback is the process of pointing a camera at the screen displaying the camera's output. This creates a feedback loop of images infinitely repeating onto and over themselves creating interesting patterns. An initial curious result has become a studied phenomena that relates to other sciences such as cellular automata, reaction diffusion and non-linear dynamics. This page has information on simulating video feedback, examples of real video feedback and links to other websites with further information about video feedback.

Simulating video feedback The following movie is a sample of some results from attempting to simulate video feedback. Created with Visions Of Chaos. See SimulatingVideoFeedback.pdf for more details.

Simulating video feedback again Years after the above simulation attempts I was inspired again to try new methods of simulation. The following movie is a full HD 1080p ten minute example of what the new simulation produces. This really needs to be watched full screen at the full HD resolution. Created with Visions Of Chaos. See this blog post for more details.

Other attempts at simulating video feedback Eugene Donev - Spatio-Temporal Dynamics in Video Feedback University of Glasgow - Department of Physics & Astronomy - Optics Group - Fractal video feedback applet Simulation of video feedback - Michael Cramer Andersen and Jesper Petersen Dave Bollinger - Feedback applet Dimitre Lima - Feedback Synthesizer Jose Maria Castelo - Morphogen

Examples of real video feedback

Video Feedback related links Joel Cadman - Spinning Lights. Jose Maria Castelo - Video Feedback Explorations. Anja Franz - Oil paintings of video feedback Chaim Goodman-Strauss - Fractal Feedback Tom Holroyd - Dr Tom's Video Feedback Gallery Ole Hyldgaard - Danish gallery of video feedback images Peter Henry King - Video Feedback Fractal Genesis Lari Lucien - Images of video feedback and video feedback using analog image mixers Jesper Petersen - Danish gallery of video feedback images Paul Prudence - Talysis. More samples here Harald Walker - MediaSculp Michael Frame, Benoit Mandelbrot, and Nial Neger - Yale University's information on video feedback. Wikipedia - Optical feedback

Scientific papers relating to Video Feedback In depth and mathematical, but will be of interest to people who want a much more detailed description of video feedback. Space-Time Dynamics in Video Feedback 1984, James P. Crutchfield Spatio-Temporal Complexity in Nonlinear Image Processing 1988, James P. Crutchfield Spatiotemporal Chaos 1994, M. C. Cross, P. C. Hohenberg Pattern formation in nonequilibrium physics 1999, J. P. Gollub, J. S. Langer Nonlinear Dynamics of Video Feedback Timothy Burt and Michael G. Lagoudakis Farey sequences of spatiotemporal patterns in video feedback 2000, Essevaz-Roulet, P. Petitjeans, M. Rosen, and J. E. Wesfreid

Did I miss anything? If you know of any other websites or papers related to video feedback contact me.

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