Image relighting by analogy

  • Authors:
  • Xiao Teng;Tat-Jen Cham

  • Affiliations:
  • Centre for Multimedia and Network Technology, School of Computer Engineering, Nanyang Technological University;Centre for Multimedia and Network Technology, School of Computer Engineering, Nanyang Technological University

  • Venue:
  • ISVC'11 Proceedings of the 7th international conference on Advances in visual computing - Volume Part I
  • Year:
  • 2011

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Abstract

We propose and analyze an example-based framework for relighting images. In this framework, there are a number of images of reference objects captured under different illumination conditions. Given an input image of a new object captured under one of the previously observed illumination conditions, new images can be synthesized for the input object under all the other illumination conditions that are present in the reference images. It does not require any other prior knowledge on the reference and target objects, except that they share the same albedo. Though it is appreciated if the reference objects have similar shape as the target object, sphere or ellipsoid which has plenty of local geometry samples are sufficient to build up a look-up table, as this method solves the problem locally. Gradient domain methods are introduced to finally generate visual-pleasing results. We demonstrate this framework on synthesized data and real images.