Band-Limited Phase-Only Correlation (Blpoc) Using Fpga For Finger Vein Recognition System
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Date
2013-09
Authors
Tan, Chee Wei
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Nowadays, due to the high security and reliable of finger vein pattern, it had become one
of the major interests in the biometric research. In the last few years, a number of finger vein
recognition algorithms have been proposed. Most of the proposed methods were implemented
in software-based on a general-purpose processor, which have limitations on the processing
speed, size and power consumption. To overcome these limitations, this thesis presents an
architecture for finger vein recognition system based on BLPOC matching method. The BLPOC
is a phase-based matching method which have benefits of high accuracy and less affected by
image shifted or brightness changed. It involves a high computation process, which is 2D-DFT,
therefore, it is necessary to implement on a hardware device such as FPGA. It consists of two
types of multiplexer blocks, one DFT block, one CORDIC block, seven types of memory blocks,
one subtracter block, one divider block and one comparator block; and is implemented using
Verilog HDL and verified using the Altera Cyclone III EP3C120F780 FPGA board. The proposed
DFT block had contributed to reduce the area used by 97% of the previously proposed DFT
block. A finger vein image database of 204 classes has been used to evaluate the performance
of the proposed architecture. Results show that the proposed architecture can process a single
matching of two finger vein images in 1.15 ms, which is about nine times faster than the softwarebased
implementation, while the accuracy is similar with the software-based implementation. In
conclusion, the finger vein recognition system based on BLPOC is successfully implemented on
a FPGA board with better processing time as compared with the software-based implementation.
Description
Keywords
Band-Limited Phase-Only Correlation (Blpoc) , Fpga