sam
Description
measures the spectral similarity between the spectra of each pixel in the hyperspectral data
score
= sam(inputData
,refSpectra
)inputData
and the specified reference spectra
refSpectra
by using the spectral angle mapper (SAM) classification
algorithm. Use this syntax to identify different regions or materials in a hyperspectral
data cube.
measures the spectral similarity between the specified test spectra
score
= sam(testSpectra
,refSpectra
)testSpectra
and reference spectra refSpectra
by
using the SAM classification algorithm. Use this syntax to compare the spectral signature of
an unknown material against the reference spectra or to compute spectral variability between
two spectral signatures.
Note
This function requires the Image Processing Toolbox™ Hyperspectral Imaging Library. You can install the Image Processing Toolbox Hyperspectral Imaging Library from Add-On Explorer. For more information about installing add-ons, see Get and Manage Add-Ons.
The Image Processing Toolbox Hyperspectral Imaging Library requires desktop MATLAB®, as MATLAB Online™ or MATLAB Mobile™ do not support the library.
Examples
Input Arguments
Output Arguments
More About
References
[1] Kruse, F.A., A.B. Lefkoff, J.W. Boardman, K.B. Heidebrecht, A.T. Shapiro, P.J. Barloon, and A.F.H. Goetz. “The Spectral Image Processing System (SIPS)—Interactive Visualization and Analysis of Imaging Spectrometer Data.” Remote Sensing of Environment 44, no. 2–3 (May 1993): 145–63. https://doi.org/10.1016/0034-4257(93)90013-N.
Version History
Introduced in R2020a
See Also
spectralMatch
| readEcostressSig
| sid
| hypercube
| sidsam
| jmsam