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Pixel Approximation Errors in Common Watershed Algorithms

, , and . Discrete Geometry for Computer Imagery, Proc. DGCI '09, volume 5810 of Springer LNCS, page 193-202. Springer, (2009)
DOI: 10.1007/978-3-642-04397-0_17

Abstract

The exact, subpixel watershed algorithm delivers very accurate watershed boundaries based on a spline interpolation, but isslow and only works in 2D. On the other hand, there are very fast pixel watershed algorithms, but they produce errors notonly in certain exotic cases, but also in real-world images and even in the most simple scenarios. In this work, we examineclosely the source of these errors and propose a new algorithm that is fast, approximates the exact watersheds (with pixelresolution), and can be extended to 3D .

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