Conjointly Space and 2D Frequency Localized Filterbanks

This paper proposes a conjointly space-frequency well localized separable 2D filters. The separable 2D filterbanks constitute a perfect or near perfect reconstruction system. The novel space-frequency localization measure to determine optimality is the product of a filter's 2D variance in space and 2D frequency variance. The particle swarm optimization method is efficiently applied to determine perfect or near perfect reconstruction optimal 2D filterbanks.