1. On-Device Event Filtering with Binary Neural Networks for Pedestrian Detection Using Neuromorphic Vision Sensors
- Author
-
Daniel D. Lee, Volkan Isler, Anthony Bisulco, Fernando Cladera Ojeda, and Daniel Kepple
- Subjects
Reduction (complexity) ,Light intensity ,Artificial neural network ,Neuromorphic engineering ,Computer science ,Pedestrian detection ,Real-time computing ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,02 engineering and technology ,Filter (signal processing) ,Image sensor ,020202 computer hardware & architecture - Abstract
In this work, we present a hardware-efficient architecture for pedestrian detection with neuromorphic Dynamic Vision Sensors (DVSs), asynchronous camera sensors that report discrete changes in light intensity. These imaging sensors have many advantages compared to traditional frame-based cameras, such as increased dynamic range, lower bandwidth requirements, and higher sampling frequency with lower power consumption. Our architecture is composed of two main components: an event filtering stage to denoise the input image stream followed by a low-complexity neural network. For the first stage, we use a novel point-process filter (PPF) with an adaptive temporal windowing scheme that enhances classification accuracy. The second stage implements a hardware-efficient Binary Neural Network (BNN) for classification. To demonstrate the reduction in complexity achieved by our architecture, we showcase a Field-Programmable Gate Array (FPGA) implementation of the entire system which obtains a 86& reduction in latency compared to current neural network floating-point architectures.
- Published
- 2020