Transfer Kernel Common Spatial Patterns for Motor Imagery Brain-Computer Interface Classification

Algorithm 1

Kernel common spatial pattern algorithms.

Input: Data .

Output: Common spatial patterns ,

and common spatial filters .

(1) Compute spatial covariance matrix by (1)

and the total spatial covariance matrix is .

(2) Eigen decomposition ;

whitening transformation .

(3) Transform covariance matrices .

and eigen decomposition .

(4) Construct the spatial filter .