Detection and Removal of Rain from Videos

The visual effects of rain are complex. Rain consists of spatially distributed drops falling at high velocities. Each drop refracts and reflects the environment, producing sharp intensity changes in an image. A group of such falling drops creates a complex time varying signal in images and videos. In addition, due to the finite exposure time of the camera, intensities due to rain are motion blurred and hence depend on the background intensities. Thus, the visual manifestations of rain are a combination of both the dynamics of rain and the photometry of the environment. In this paper, we present the first comprehensive analysis of the visual effects of rain on an imaging system. We develop a correlation model that captures the dynamics of rain and a physics-based motion blur model that explains the photometry of rain. Based on these models, we develop efficient algorithms for detecting and removing rain from videos. The effectiveness of our algorithms is demonstrated using experiments ...

• Type: Conference
• Year: 2004
• Where: CVPR
• Authors: Kshitiz Garg, Shree K. Nayar
• Keywords: Common Weather Conditions, Computer Vision, CVPR 2004, Dynamic Weather Conditions, Various Weather Conditions, Visual Effects, Weather Conditions