FIELD PROGRAMMABLE GATE ARRAYS (FPGA) FOR PIXEL PURITY INDEX USING BLOCKS OF SKEWERS FOR ENDMEMBER EXTRACTION IN HYPERSPECTRAL IMAGERY

被引：31

作者：

Hsueh, Mingkai ^{[1
]}

Chang, Chein-I ^{[1
]}

机构：

[1] Univ Maryland Baltimore Cty, Dept Comp Sci & Elect Engn, Remote Sensing Signal & Image Proc Lab, Baltimore, MD 21250 USA

来源：

INTERNATIONAL JOURNAL OF HIGH PERFORMANCE COMPUTING APPLICATIONS | 2008年 / 22卷 / 04期

关键词：

automatic pixel purity index (APPI); block of skewers (BOS)-APPI; field programmable gate arrays (FPGA); pixel purity index (PPI); virtual dimensionality (VD);

D O I：

10.1177/1094342007088378

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Pixel purity index (PPI) is a popular endmember extraction algorithm because of its availability in the ENVI software. Recently, its hardware implementation has been explored by the so-called block of skewers (BOS) that can be used to generate desired skewers required by the PPI with significantly reduced computational complexity. This paper investigates the feasibility of field programmable gate arrays (FPGAs) design for the BOS of a modified PPI ( called automatic PPI), referred to as BOS-APPI in high speed computation. Several block designs based on cube, pyramid, square and tetrahedron are also developed for the BOS-APPI along with their FPGA implementations as new reconfigurable systems to perform fast and onboard processing of hyperspectral imagery. Finally, the proposed FPGA designs are realized and substantiated by simulations.

引用

页码：408 / 423

页数：16

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