Effective Despeckling of HDR Images
Technical Sketch - SIGGRAPH Asia 2011, Hong Kong, China
[bibtex] [pdf] [slides] [test EXR files]
Abstract
This sketch presents a fast and accurate method for despeckling HDR images, without adding blur or artefacts. We base our approach on a median-based detection phase coupled to a clustering to keep salient features of the images, and then reconstruct the speckled pixels using a robust version of the gaussian filter.
Important note
The slides describe a more elegant and simpler version of the algorithm presented in the paper. It has less parameters, it is simple to implement and very easy to parallelize, while providing results of the same quality of the method presented in the paper. The slides should be enough to implement this improved method.
First and third: tonemapped version of original HDR image, second and fourth: tonemapped version of despeckled HDR image. Click to see complete images.