Publication Details

Real-Time PCA Calculation for Spectral Imaging (using SIMD and GP-GPU)

JOŠTH, R.; ANTIKAINEN, J.; HAVEL, J.; HEROUT, A.; ZEMČÍK, P.; HAUTA-KASARI, M. Real-Time PCA Calculation for Spectral Imaging (using SIMD and GP-GPU). Journal of Real-Time Image Processing, 2012, vol. 7, no. 2, p. 95-103. ISSN: 1861-8200.
Czech title
Výpočet PCA v reálném čase pro zpracování spektrálních obrazů (s využitím SIMD a GP-GPU)
Type
journal article
Language
English
Authors
Jošth Radovan, Ing., Ph.D.
Antikainen Jukka (VUT)
Havel Jiří, Ing., Ph.D. (CM-SFE)
Herout Adam, prof. Ing., Ph.D. (DCGM)
Zemčík Pavel, prof. Dr. Ing., dr. h. c. (DCGM)
Hauta-Kasari Markku, Dr.
Keywords

Spectral Imaging; PCA; GPU; CUDA; SSE

Abstract

This article presents two optimized implementations of the PCA algorithm, primarily targeted on spectral image analysis in real time. One of them utilizes the SSE instruction set of contemporary CPUs, the other one runs on graphics processors (GPUs), using the CUDA environment. The implementations are evaluated and compared with a multithreaded C implementation compiled by an optimizing compiler and the results show speed-ups of around 10x which allows for using PCA on RGB and spectral images in real time. The discussed implementations are made available in a dynamically linked library, including a MATLAB plug-in interface so that they can be used by the professional public.

Published
2012
Pages
95–103
Journal
Journal of Real-Time Image Processing, vol. 7, no. 2, ISSN 1861-8200
BibTeX 
@article{BUT50549,
  author="Radovan {Jošth} and Jukka {Antikainen} and Jiří {Havel} and Adam {Herout} and Pavel {Zemčík} and Markku {Hauta-Kasari}",
  title="Real-Time PCA Calculation for Spectral Imaging (using SIMD and GP-GPU)",
  journal="Journal of Real-Time Image Processing",
  year="2012",
  volume="7",
  number="2",
  pages="95--103",
  issn="1861-8200"
}
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