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Bochang Moon, Jong Yun Jun, JongHyeob Lee, Kunho Kim, Toshiya Hachisuka and Sung-Eui Yoon Robust Image Denoising Using a Virtual Flash Image for Monte Carlo Ray Tracing Computer Graphics Forum 32

Article first published online: 11 JAN 2013 | DOI: 10.1111/cgf.12004

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We propose an efficient and robust image-space denoising method for noisy images generated by Monte Carlo ray tracing methods. Our method is based on two new concepts: virtual flash images and homogeneous pixels. Inspired by recent developments in flash photography, virtual flash images emulate photographs taken with a flash, to capture various features of rendered images without taking additional samples. Using a virtual flash image as an edge-stopping function, our method can preserve image features that were not captured well only by existing edge-stopping functions such as normals and depth values.

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