the archive
#fast algorithms
3 resultsmath.NA2019
Smoothing for signals with discontinuities using higher order Mumford-Shah models
Martin Storath, Lukas Kiefer, Andreas Weinmann
The paper investigates higher‑order Mumford‑Shah models for smoothing one‑dimensional signals with discontinuities while preserving polynomial trends, and provides fast quadratic‑t…
#mumford-shah functional#signal smoothing#higher-order splines#discontinuities
math.NA2019
Fast Tensor Needlet Transforms for Tangent Vector Fields on the Sphere
Ming Li, Philip Broadbridge, Andriy Olenko +1
The paper develops a tight frame of tensor needlets for representing tangent vector fields on the sphere and provides fast multiscale transform algorithms with near‑linear computat…
#tensor needlets#tangent vector fields#sphere#multiresolution analysis
cs.CV2019
Rapid Light Field Depth Estimation with Semi-Global Matching
Yuriy Anisimov, Oliver Wasenmüller, Didier Stricker
The paper introduces a fast depth estimation method for light field images that leverages Semi‑Global Matching to quickly compute accurate depth maps across various light field con…
#light field imaging#depth estimation#semi-global matching#fast algorithms