Higher-order Autoregressive Models for Dynamic Textures
M. Eric Hyndman, Allan Stewart Jepson, David J. Fleet · 2007
Dynamic textured sequences are characterized by the interactions between many particles or objects in the scene. Based on earlier work the images of the sequence are interpreted as the output of a linear autoregressive process driven by white Gaussian noise. We extend earlier work by increasing the amount temporal information included when learning the motion in the scene, allowing the models to capture complex motion patterns which extend over multiple frames, thereby increasing the perceptual accuracy of the synthesized results. To overcome problems of dynamic model stability, we apply Burg’s Maximum Entropy Spectral Analysis technique for parameter estimation, which is found to be reliably stable on smaller samples of training data, even with higher-order dynamics. 1