Abstract

Dynamic texture can be defined as a temporally continuous and infinitely varying stream of images that exhibit certain temporal statistics. Linear dynamic system (LDS) represented by the state-space equation has been proposed to model dynamic texture[12]. LDS can be used to synthesize dynamic texture by sampling the system noise. However, the visual quality of the synthesized dynamic texture using noise-driven LDS is often unsatisfactory. In this paper, we regard the noise-driven LDS as an open-loop control system and analyze its stabi- lity through its pole placement. We show that the noise-driven LDS can produce good quality dynamic texture if the LDS is oscillatory. To deal with an LDS not oscillatory, we present a novel approach, called closed- loop LDS (CLDS) where feedback control is introduced into the system. Using the succeeding hidden states as an input reference signal, we de- sign a feedback controller based on the difierence between the current state and the reference state. An iterative algorithm is proposed to ge- nerate dynamic textures. Experimental results demonstrate that CLDS can produce dynamic texture sequences with promising visual quality.