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After preprocessing: a) A spherical representation is generated based on central surface. b) Features are computed and resampled along with central surface into 163,842 vertices via icosahedron subdivision. c) The covariance matrix is constructed. d) The weighted mean of features is computed based on weights from covariance matrix. e) The unweighted mean is computed f) Qualitative and quantitative analysis are performed based on weighted and un-weighted mean information.
