Method and system for modeling light scattering in a participating medium
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United States of America Patent
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Apr 17, 2018
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app pub date -
Jul 12, 2016
filing date -
Jul 12, 2016
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Abstract
The disclosure provides an approach for simulating scattering in a participating medium. In one embodiment, a rendering application receives an image and depth values for pixels in the image, and generates multiple copies of the image associated with respective numbers of scattering events. The rendering application further applies per-pixel weights to pixels of the copies of the image, with the per-pixel weight applied to each pixel representing a probability of a light ray associated with the pixel experiencing the number of scattering events associated with the copy of the image in which the pixel is located. In addition, the rendering application applies a respective blur to each of the weighted copies of the image based on the number of scattering events associated with the weighted copy, sums the blurred weighted image copies, and normalizes the sum to account for conservation of energy.
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