Directional-vector rational filters for color image interpolation

Lazhar Kheriji, M. Gabbouj

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)


Color image interpolation using Directional-Vector Rational Filters (DVRF) is investigated in this paper. We study this problem (or the upsampling problem) for two decimation schemes that are most commonly used in practice:(l) rectangular decimation (every-other-row and every-other-column sub-sampling) and (2) Quincunx decimation. For each decimation lattice, we present an adaptive re-sampling algorithm using a new nonlinear interpolator, which has desirable properties, such as the preservation of edges and image details, and the preservation of inter-channel correlations. Extensive simulations show that the proposed algorithms using DVRF outperform linear and nonlinear techniques; e.g. vector FIR median hybrid filters (VFMH). Image interpolated using DVRF are free from blockiness and jaggedness.

Original languageEnglish
Title of host publicationProceedings of the 10th International Conference on Microelectronics, ICM 1998
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)0780349695, 9780780349698
Publication statusPublished - 1998
Event10th International Conference on Microelectronics, ICM 1998 - Monastir, Tunisia
Duration: Dec 14 1998Dec 16 1998


Other10th International Conference on Microelectronics, ICM 1998

ASJC Scopus subject areas

  • Information Systems
  • Electrical and Electronic Engineering


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