Clark School Home UMD

ECE News Story

Narayan is PI for NSF sampling rate distortion grant

Narayan is PI for NSF sampling rate distortion grant

Professor Prakash Narayan (ECE/ISR) is the principal investigator for a three-year, 500K NSF Communication and Information Theory grant, Sampling Rate Distortion.

The research takes an information theoretic approach to understanding principles that govern a coordinated rate-efficient sampling of multiple signals and centralized compression of the sampled subset. The goal is to reconstruct the entirety of the signals within acceptable distortion levels. The research has three main components: an integrated analysis of sampling and rate distortion behavior, and their tradeoffs; sampling rate distortion theory for Markov random fields; and sampling rate distortion performance for signals with memory. Expected outcomes are a characterization of fundamental performance limits of optimum sampling rate and lossy compression rate and their interplay, together with the best choice of sampling mechanisms and attendant processing for reconstruction.

The investigators' technical approach involves the development of a principle of "sampling rate distortion" which lies at the intersection of specialities in information theory and signal processing, and has the larger objective of elucidating material connections between sampling and rate distortion performance. The performance of specific sampling and rate distortion processing schemes will be investigated. Specific groups of open problems chosen for investigation address a general class of multisignal models for sampling and lossy data compression. These are motivated by potential applications including dynamic thermal management for on-chip temperature control during runtime; network function computation; and image restoration, surface reconstruction and visual integration in computer vision.

Related Articles:
Narayan, Martins participate in BIRS decentralized systems workshop
Narayan is PI for NSF network function computation grant

September 1, 2013

Prev   Next

Current Headlines

Jonathan Simon is invited speaker at Paris Workshop on Decoding of Sound and Brain

Barg, Tamo named winners of IEEE Information Theory Society Paper Awad

UMD Discovery Could Enable Portable Particle Accelerators

JaJa Connects UMD Experts with NSF South Big Data Hub Resources

Fisher Named Chair of the Fischell Department of Bioengineering

ISR participates in NSF 30th Anniversary ERC Celebration

Papamanthou Receives Yahoo! Labs Award

White Symposium to Examine Collective Animal Behavior and Control of Robotic Networks

News Resources

Return to Newsroom

Search News

Archived News

Events Resources

Events Calendar

Additional Resources

UM Newsdesk

Faculty Experts