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Principal component transform of multiband image

Modified on 2010/05/07 09:38 by Administrator Categorized as Digital Image Processing
Karhunen Loeve(KL) Transform (eigenvector/principal component/hotelling Transform)



Principal components transform. (a) Red band of a color image. (b) Green band. (c) Blue band. (d) Principal component band 1. (e) Principal component band 2. (f) Principal component band 3. Note that the red, green, and blue bands are highly correlated – they look similar ; whereas with the PCT bands most the visual information is in band 1, some in band 2 and none in band 3. This is what it means when we say that the PCT decorrelates the data and puts most of the information into the principal component band.


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