Rethinking Image Deraining via Rain Streaks and Vapors

Understand

Single image deraining regards an input image as a fusion of a background image, a transmission map, rain streaks, and atmosphere light.

• While advanced models are proposed for image restoration (i.e., background image generation), they regard rain streaks with the same properties as background rather than transmission medium.
• As vapors (i.e., rain streaks accumulation or fog-like rain) are conveyed in the transmission map to model the veiling effect, the fusion of rain streaks and vapors do not naturally reflect the rain image formation.
• In this work, we reformulate rain streaks as transmission medium together with vapors to model rain imaging.