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In this paper, we propose a fast and effective low illumination video enhancement algorithm by combining the Retinex theory with the dark channel prior theory to improve contrast and reduce noise of low illumination videos. Considering enhancing low illumination videos and amplifying noise simultaneously, noise reduction before enhancement is beneficial to improving video enhancement effects. Therefore,...
We present a small case study in which we evaluate the potential of the precomputed radiance transfer (PRT) algorithm as a means of variance reduction in path tracing. We describe how to use PRT solutions as correlated functions for both correlated and importance sampling in a straightforward way and study how each approach reduces noise in images rendered with path tracing.
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