June 2014
Intermediate to advanced
576 pages
16h 43m
English
book
Image Analysis, Classification and Change Detection in Remote Sensing, 3rd Edition
by Morton J. Canty
Content preview from Image Analysis, Classification and Change Detection in Remote Sensing, 3rd Edition
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Multivariate alteration detection (MAD) 389
Listing 9 .3: Excerpt from the Python script imad.py.
1 # weighted cov arianc e ma trices and means
2 S = cpm . covar iance ()
3 means = cpm . mea ns ()
4 # reset prov mea ns objec t
5 cpm . __i nit__ (2* bands )
6 s11 = S [0: bands ,0: ba nds ]
7 s11 = (1 - lam )* s11 + lam *np . eye ( band s )
8 s22 = S[ ba nds : , ban ds :]
9 s22 = (1 - lam )* s22 + lam *np . eye ( band s )
10 s12 = S [0: bands , bands :]
11 s21 = S[ band s : ,0: ba nds ]
12 c1 = s12 * linalg . inv ( s22 )* s21
13 b1 = s11
14 c2 = s21 * linalg . inv ( s11 )* s12
15 b2 = s22
16 # so lution of generali zed ei genpro blems
17 IF bands >1:
18 mu2a ,
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