Live Demonstration: Digit Recognition on Pixel Processor Arrays

Abstract

In this demo, we will showcase recent work on implementing convolutional neural networks directly on pixel processor arrays (PPA). As CNNs demonstrate enhanced performance across tasks from classification to image synthesis, it becomes essential to find the most adequate ways to realize them especially for embedded, real-time and reactive tasks in areas across Computer Vision and Robotics. The PPA concept is one architecture that pairs sensing and massively parallel processing at the focal plane level and allow mid to high level tasks to be run wholly embedded within them. They allow operation at high framerates and low energy consumption (<= 2W), and without the need for external signal interpretation or processing. In this demo we will showcase our recent work on the implementation of CNNs on the SCAMP5 architecture as a step towards true end-to-end operation on flexibly programmable PPA hardware. In particular, we will showcase live how our modifications to CNNs allow them to run tasks such as handwritten number classification from image capture to classification wholly embedded on the PPA.