“Fast median and bilateral filtering” by Weiss

  • ©Ben Weiss

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Title:

    Fast median and bilateral filtering

Presenter(s)/Author(s):



Abstract:


    Median filtering is a cornerstone of modern image processing and is used extensively in smoothing and de-noising applications. The fastest commercial implementations (e.g. in Adobe® Photoshop® CS2) exhibit O(r) runtime in the radius of the filter, which limits their usefulness in realtime or resolution-independent contexts. We introduce a CPU-based, vectorizable O(log r) algorithm for median filtering, to our knowledge the most efficient yet developed. Our algorithm extends to images of any bit-depth, and can also be adapted to perform bilateral filtering. On 8-bit data our median filter outperforms Photoshop’s implementation by up to a factor of fifty.

References:


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