Image coding based on regular cosine-modulated filter banks

Image coding based on regular cosine-modulated filter banks

In this paper, a novel design method of regular cosine-modulated filter banks (CMFB's) have been presented for image coding. After introducing a regularity constraint on lattice parameters of a prototype filter in paraunitary (PU) CMFB's, we derive a regularity condition for perfect recons...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Uto, T., Ichiwara, K., Ikehara, M., Ohue, K.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Computer science
Design methodology
Design optimization
Filter bank
Image coding
Image reconstruction
Lattices
Nonlinear filters
Prototypes
Testing
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Beschreibung
Zusammenfassung:In this paper, a novel design method of regular cosine-modulated filter banks (CMFB's) have been presented for image coding. After introducing a regularity constraint on lattice parameters of a prototype filter in paraunitary (PU) CMFB's, we derive a regularity condition for perfect reconstruction (PR) CMFB's. Finally, we design regular 8-channel 32-length PUCMFB and PRCMFB by a unconstrained optimization of residual lattice parameters, and several simulation results for test images are shown for evaluating the proposed image coder based on the CMFB's with one degree of regularity.
ISSN:1548-3746
DOI:10.1109/MWSCAS.2007.4488618