Local and Global Geometric Structure Preserving and Application to Hyperspectral Image Classification

Figure 1

Simple examples of dimensionality reduction on generated 2D data sets produced by LDA, PCA, LPP, MFA, LGSPP, JGLDA, and LGGSP, respectively. The samples from different classes are marked with different shapes and colors (blue cross × and red circle ), respectively.

(a) A simple linear separable D data problem

(b) Projected on “ripley” data set

(c) “ripley” data set