Steerable filters-based method for generation of non-photorealistic animation
基于定向滤波的非真实感动画生成方法

Different to traditional computer animation, accurate 3D models and illumination models were not requested in non-photorealistic animation, so some users hoped to create simple NPA by themselves. Based on this requirement, this paper introduced steerable filters: generated a pair of even and odd filtered images by convoluting a quadrature pair of steerable filters with a source image, and then through continuously varying their phases over time, it gave the vision of an object in motion without changing its position. Created the animation conveniently in this way.