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

Figure 2

Complex 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 2D multimodal data points example

(b) The “two-moon” data samples