A Novel Monte Carlo Noise Reduction Operator
IEEE Computer Graphics and Applications
Sample-space bright spots removal using density estimation
Proceedings of Graphics Interface 2011
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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.