NDLI: Integral form 4-D light field filters using Xilinx FPGAs and 45 nm CMOS technology

Content Provider	Springer Nature Link
Author	Wimalagunarathne, Randeel Wijenayake, Chamith Madanayake, Arjuna Dansereau, Donald G. Bruton, Len T.
Copyright Year	2013
Abstract	Four-dimensional (4-D) infinite impulse response frequency hyper-planar filter and a digital VLSI architecture for real time light field based depth filtering applications is proposed. A signal flow graph based on discrete spatial integrators is introduced, which leads to improved sensitivity properties for perturbations in filter coefficients. First order sensitivity analysis of filter transfer function shows a 92.9 % reduction of maximum gain error in frequency response with 12 bits of fractional precision, when compared with a direct-form architecture. Prototype FPGA hardware-in-the-loop co-simulations are performed for two different light field geometries. Register transfer level design validation is carried out via FPGA hardware emulation with a host computer providing memory buffers, and the full-design emulation is carried out on a standalone Berkely Emulation Engine (BEE3), operating at 36.44 and 37.31 MHz for the two light field geometries, respectively. 45 nm CMOS implementation is carried out up to the synthesis level, yielding operating frequencies of 154.4 and 153.3 MHz (correspondingly frame rates of 1.15 and 18.286 Hz) for the two light field geometries, respectively.
Starting Page	47
Ending Page	65
Page Count	19
File Format	PDF
ISSN	09236082
Journal	Multidimensional Systems and Signal Processing
Volume Number	26
Issue Number	1
e-ISSN	15730824
Language	English
Publisher	Springer US
Publisher Date	2013-05-09
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	4-D filtering Light fields Digital architecture Frequency-hyperplanar Circuits and Systems Electrical Engineering Signal, Image and Speech Processing Artificial Intelligence (incl. Robotics)
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Artificial Intelligence Signal Processing Information Systems Computer Science Applications Software Hardware and Architecture

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