We present an extension to the widely used spectral angle metric, calculating an azimuthal angle around a reference vector. We demonstrate that it provides additional information, thus improving the classification ability of the spectral angle.
© 2011 OSA
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(110.4234) Imaging systems : Multispectral and hyperspectral imaging
(280.4788) Remote sensing and sensors : Optical sensing and sensors
J. O'Sullivan, P. R. Hoy, and H. N. Rutt, "An Extended Spectral Angle Map for Hyperspectral and Multispectral Imaging," in CLEO:2011 - Laser Applications to Photonic Applications, OSA Technical Digest (CD) (Optical Society of America, 2011), paper CMG2.