Reduction of the number of spectral bands in Landsat images: a comparison of linear and nonlinear methods

L. Journaux; Irene Foucherot; Pierre Gouton

doi:10.1117/1.2212108

1 June 2006 Reduction of the number of spectral bands in Landsat images: a comparison of linear and nonlinear methods

L. Journaux, Irene Foucherot, Pierre Gouton

Author Affiliations +

Optical Engineering, Vol. 45, Issue 6, 067002 (June 2006). https://doi.org/10.1117/1.2212108

Abstract

We describe some applications of linear and nonlinear projection methods in order to reduce the number of spectral bands in Landsat multispectral images. The nonlinear method is curvilinear component analysis (CCA), and we propose an adapted optimization of it for image processing, based on the use of principal-component analysis (PCA, a linear method). The principle of CCA consists in reproducing the topology of the original space projection points in a reduced subspace, keeping the maximum of information. Our conclusions are: CCA is an improvement for dimension reduction of multispectral images; CCA is really a nonlinear extension of PCA; CCA optimization through PCA (called CCAinitPCA) allows a reduction of the computation burden but provides a result identical to that of CCA.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

L. Journaux, Irene Foucherot, and Pierre Gouton "Reduction of the number of spectral bands in Landsat images: a comparison of linear and nonlinear methods," Optical Engineering 45(6), 067002 (1 June 2006). https://doi.org/10.1117/1.2212108

Published: 1 June 2006

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available