Hyperspectral Data Processing: Algorithm Design and Analysis

24.2 Binary Coding

Assume that a spectral signature vector s specified by a column vectior where L is the total number of spectral bands. Each signature component s_l in s represents a spectral value at the lth spectral band that is acquired by a particular wavelength ω_l in a specific spectral range.

24.2.1 SPAM Binary Coding

Let μ be the mean of a spectral signature s and given by

(24.1)

Using (24.1) we can encode the signature vector s as a -dimensional binary code word, denoted by where is an L-dimensional binary code word and is an -dimensional binary code word, both of which are defined by

(24.2)

and

(24.3)

Now, for given two spectral signatures vectors and we can measure their similarity ...