Input-Aware Flow-Based Computing on Memristor Crossbars with Applications to Edge Detection

Dwaipayan Chakraborty, Sunny Raj, Steven Lawrence Fernandes, Sumit Kumar Jha

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Sneak paths in nanoscale memristor crossbars have traditionally been viewed as a problem in the use of memristor crossbars as non-volatile replacements of traditional volatile RAM memories. We show that the sneak paths in a memristor crossbar can be employed to perform computation that exploits device-level parallelism. Our computation can be performed in the memory and does not require data to be moved between a processor and a memory unit - thereby, avoiding the von Neumann bottleneck. We demonstrate the potential of our approach by applying it to a basic problem in computer vision: edge detection in an image. Our results show that the flow-based computing approach on nanoscale memristor crossbars can be used to obtain high-quality approximations of edge detection. We have synthesized multiple 8× 8 crossbar circuits for this purpose - a single crossbar circuit for detecting edges between all possible pixel pairs with 85% accuracy, and another family of input-aware crossbars with higher performance over real-world images. The family of input-aware crossbars together performs approximate edge detection for a subset of pixel pairs obtained from analyzing the BSD500 database, and the resultant images are of a quality comparable to exact edge detection.

Original languageEnglish (US)
Article number8790814
Pages (from-to)580-591
Number of pages12
JournalIEEE Journal on Emerging and Selected Topics in Circuits and Systems
Volume9
Issue number3
DOIs
StatePublished - Sep 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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