Electrical and Computer Engineering Faculty Research

Title

VLSI Architecture for 4-D Depth Filtering

Document Type

Article

Publication Date

Spring 5-2015

Abstract

We propose the application of light field cameras and depth-selective 4-D IIR filtering to enable video surveillance, leveraging the post-capture depth-selective filtering enabled by computational photography. Novel ultralow-complexity differential-form depth-selective 4-D IIR filter algorithms and their corresponding architectures are proposed for processing 4-D light fields. Practical results are presented for real-world video sequences, and a CMOS VLSI implementation of the arithmetic processing elements is synthesized. The architecture shows 86.66, 78.94% reduction in multipliers and adders compared to direct-form structure and delivers 26 frames/s for light fields of size 16×16×128×128.

Publication Title

Signal, Imange and Video Processing

Volume

9

Issue

4

First Page

809

Last Page

818