Effective Despeckling of HDR Images

Anthony Pajot , Loïc Barthe (1, 2) , Mathias Paulin (1, 2)

1 IRIT-VORTEX - Visual Objects from Reality To Expression
2 UT3 - Université Toulouse III - Paul Sabatier

High Dynamic Range (HDR) images are common in computer graphics. In these images, speckles can appear for various reasons, such as high variance for Monte-Carlo-based rendering engines. These speckles are responsible for large artefacts if non-robust post-processing methods are used, such as tonemapping operators relying on a maximal or average luminance value. Ensuring that all post-processing operators are robust is tedious, therefore we propose to handle these speckles before any other processing is done. This way, we ensure that any HDR image post-processing pipeline produces acceptable results.

Mots clés: High Dynamic Range; Despeckling; Robust Filtering

Domaines: Synthèse d'image et réalité virtuelle [cs.GR]

Anthony Pajot, Loïc Barthe, Mathias Paulin. Effective Despeckling of HDR Images. SIGGRAPH Asia 2011 Sketches, ACM Special Interest Group on Computer Graphics (SIGGRAPH); ACM Special Interest Group on Computer-Human Interaction (SIGCHI), Dec 2011, Hong Kong, China. ⟨10.1145/2077378.2077431⟩. ⟨hal-01518540⟩