Volume rendering using adaptive buckets
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United States of America Patent
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Dec 12, 2017
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app pub date -
Feb 10, 2014
filing date -
Feb 10, 2014
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Abstract
Techniques are disclosed for rendering scene volumes having scene dependent memory requirements. A image plane used to view a three dimensional volume (3D) volume into smaller regions of pixels referred to as buckets. The number of pixels in each bucket may be determined based on an estimated number of samples needed to evaluate a pixel. Samples are computed for each pixels in a given bucket. Should the number of samples exceed the estimated maximum sample count, the bucket is subdivided into sub-buckets, each allocated the same amount of memory as was the original bucket. Dividing a bucket in half effectively doubles both the memory available for rendering the resulting sub-buckets and the maximum number of samples which can be collected for each pixel in the sub-bucket. The process of subdividing a bucket continues until all of the pixels in the original bucket are rendered.
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