Performance comparison between orthogonal subspace projection and the constrained signal detector

Steven E. Johnson

doi:10.1117/1.2749708

1 June 2007 Performance comparison between orthogonal subspace projection and the constrained signal detector

Steven E. Johnson

Author Affiliations +

Optical Engineering, Vol. 46, Issue 6, 067005 (June 2007). https://doi.org/10.1117/1.2749708

Abstract

The orthogonal subspace projection (OSP) algorithm, which is used to process mixed pixels in hyperspectral images, is discussed frequently in the remote sensing literature. A recent paper discussed ways to derive the OSP and the use of OSP as a target detector or for material abundance estimation. However, a technique called the constrained signal detector (CSD) outperforms the OSP technique. OSP is equivalent to the unconstrained least-squares estimate of the abundance of a particular material in a mixed pixel. CSD is equivalent to the constrained least-squares abundance estimate. It is shown through theory and simulation that the constrained method (CSD) outperforms the unconstrained technique (OSP) for the problems of target detection and material abundance estimation in mixed pixels.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Steven E. Johnson "Performance comparison between orthogonal subspace projection and the constrained signal detector," Optical Engineering 46(6), 067005 (1 June 2007). https://doi.org/10.1117/1.2749708

Published: 1 June 2007

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