Integro-Differential Equations Based on $(BV, L^1)$ Image Decomposition

  • Authors:
  • Prashant Athavale;Eitan Tadmor

  • Affiliations:
  • prashant@math.ucla.edu;tadmor@cscamm.umd.edu

  • Venue:
  • SIAM Journal on Imaging Sciences
  • Year:
  • 2011

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Abstract

A novel approach for multiscale image processing based on integro-differential equations (IDEs) was proposed in [E. Tadmor and P. Athavale, Inverse Probl. Imaging, 3 (2009), pp. 693-710]. These IDEs, which stem naturally from multiscale $(BV,L^2)$ hierarchical decompositions, yield inverse scale representations of images in the sense that the $BV$-dual norms of their residuals are inversely proportional to the scaling parameters. Motivated by the fact that $(BV,L^1)$ decomposition is more suitable for extracting local scale-space features than $(BV,L^2)$, we introduce here the IDEs which arise from multiscale $(BV,L^1)$ hierarchical decompositions. We study several variants of this $(BV,L^1)$-based IDE model, depending on modifications to the curvature term.