Light field estimation in the ultraviolet spectrum

Abstract

Ultraviolet cameras are becoming well used, with their applications in botany, dermatology, and recently in photography. In this paper, we develop a novel method of light field estimation from an ultraviolet image. Our UV light field imaging model is obtained by exploiting the radiometry, the optic, and the acquisition geometry. First, we develop an optic simulation model for an UV camera with a thin lens. That model permits to reconstruct a scene image from the correspondent light field. Then, we define a variational formalism that integrates an image of a scene acquired by an UV camera, the depth map of that scene, and the optic simulation model in order to estimate the light field. The experimental results show that it is possible to estimate the light field in the UV spectrum with accuracy.