Relighting of the painting Portrait de l'Artiste sans Barbe, by van Gogh, from different directions using our technique.

Image Relighting using Shading Proxies

Bernardo Henz bhenz@inf.ufrgs.br

and

Manuel M. Oliveira oliveira@inf.ufrgs.br

We present a practical solution to the problem of single-image relighting of objects with arbitrary shapes. It is based on a shading-ratio image obtained from the original and target lighting applied to shading proxies (warped versions of 3-D models that approximate the objects to be relit). Our approach is flexible and robust, being applicable to objects with non-uniform albedos. We demonstrate its effectiveness by relighting a large number of photographs, paintings, and drawings containing a variety of objects of different materials. In addition to relighting, our technique can estimate smooth normal and depth maps from pictures, as well as perform intrinsic-image decomposition. Preliminary evaluation has shown that our technique produces convincing results, and novice users can relight images in just a couple of minutes.

Keywords

Image Relighting, Painting Relighting, Normal and Depth-Map Estimation.

Thesis

Full thesis


Short version

Relighting Results

Video

Publications

Bernardo Henz and Manuel M. Oliveira. "Relighting of Paintings and Drawings based on Shading-Color Correlation". Proceedings of the Computer Graphics International 2015, 24-26 June 2015.