Multicamera Array Matt Casella Elizabeth Dinella Killian Coddington

Multicamera Array Matt Casella, Elizabeth Dinella, Killian Coddington, Nate Bellavia

Origins of project • Motivated by work done by Stanford Ph. D students • RIT Prototype developed during 20122013 academic year by students in the Freshman Imaging Project class

Synthetic Aperture Imaging Reference: Marc Levoy

Basic Concept Cameras Occluder Object

What is a Multi-Camera Array?

Prototype Architecture Mac Laptop Camera Image capture x 6 Image compression and resizing Computer Switch Data routing x 6 User Interface Arduino Trigger cameras Select operating mode, initiate operation, render imagery Processing, control, storage

Imagine. RIT Prototype

Summer Objectives • Increase frame rate of prototype by improving image processing • Develop and validate a predictive model • to facilitate analysis of alternate configurations Conduct cost/performance trade-off study

Bottlenecks • Matlab processing limitations o Handling of image display • Non-optimal data flow o Picture transfer from camera to software

Components of the software • Calibration • Synthetic aperture through image shifting • GUI

Progress to date Matlab to C++ translation complete • Result: 400% faster processing o 16 frames per second • Limitations: capture rate of cameras

Next Steps • remove remaining bottlenecks o File stream • Software optimization

Summer Objectives • Increase frame rate of prototype by improving image processing • Develop and validate a predictive • model to facilitate analysis of alternate configurations Conduct cost/performance trade-off study

Predictive Model

Static Validation

Dynamic Validation

Model Applications • Alternate Configurations o Different cameras o Number of cameras o Placement of cameras

Cost/Performance Tradeoffs • Point Grey cameras used in prototype cost ~$650 each • Other potential cameras available for a cost of ~$25 each • Planning to model and test system using • Raspberry Pi cameras to determine impact on image quality and frame rate Work currently in progress

Summary • Demonstrated significantly improved performance by translating processing routines • Validated predictive model to allow rapid assessment of alternate architectures • Anticipate completing cost/performance trade offs by end of summer

Acknowledgements Dan Smialek Joe Pow RIT Carlson Center Facilities Manager RIT CIS Associate Director Philip Salvaggio Dr. María RIT Imaging Science Helguera Ph. D Student RIT Associate Professor Stefi Baum Billy Frey Director of CFC Center for Imaging Science undergraduate student Dr. Roger Easton RIT Professor Jason Faulring RIT Systems Integration Engineer Lindsey Schwartz Imaging Science undergraduate student Bob Callens Intern Program Coordinator Dr. Carl Salvaggio RIT Professor