60.3: Spatio-Temporal Edge Enhancement for Reducing Motion Blur

Abstract

LCDs suffer from a loss of resolution when displaying moving images (motion blur). Solutions to this problem have included overdriving and reduction of temporal aperture by introducing blanks or by increasing the frame rate. These methods usually require additional hardware, thereby increasing cost. We propose a purely mathematical operation to reduce motion blur. In the proposed method, the degree of overdriving is not constant over the whole image. Rather, it depends on the spatial complexity surrounding a given area, wherein more overdriving is applied to areas of high spatial frequency. In this way, motion blur can be reduced without inducing artifacts which may otherwise result from excessive overdriving. The new method shows easily distinguishable improvement and the MPRT (Motion Picture Response Time) values are reduced by 5 ∼ 10%.