VB-KGN: Variational Bayesian Kernel Generation Networks for Motion Image Deblurring

Motion blur estimation is a critical and fundamental task in scene analysis and image restoration. While most state-of-the-art deep learning-based methods for single-image motion image deblurring focus on constructing deep networks or developing training strategies, the characterization of motion blur has received less attention. In this paper, we innovatively propose a non-parametric Variational Bayesian Kernel Generation Network (VB-KGN) for characterizing motion blur in a single image. To solve this model, we employ the variational inference framework to approximate the expected statistical distribution of motion blur images in a data-driven manner. The qualitative and quantitative evaluations of our experimental results demonstrate that our proposed model can generate highly accurate motion blur kernels, significantly improving motion image deblurring performance and substantially reducing the need for extensive training sample preprocessing for deblurring tasks.