Overlapping Block Transform: Window Design, Fast Algorithm and an Image Coding Experiment

Edler B, Temerinac M (1995)

Publication Type: Journal article

Publication year: 1995

Journal

IEEE Transactions on Communications Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 43

Journal Issue: 9

DOI: 10.1109/26.412714

Abstract

A window design and fast algorithm for the overlapping block transform (OBT) of size N/spl times/L are presented. The presented algorithm for the OBT reduces the calculation complexity to an N/spl times/N transform with a fast algorithm and a simple preprocessing including windowing. A signal-independent window optimization strategy is introduced for image coding application. Results for a first-order Markov model and an image coding experiment show, that the coding gains of the optimized OBTs increase and blocking effects decrease with increasing window length L. A comparison with DCT-coding shows that the OBT, which has a slightly increased realization complexity, provides higher coding gain and a significant blocking effect reduction.

Authors with CRIS profile

Bernd Edler Lehrstuhl für Audiosignalanalyse (AudioLabs) (Stiftungslehrstuhl)

Involved external institutions

University of Novi Sad

Serbia (RS)

How to cite

APA:

Edler, B., & Temerinac, M. (1995). Overlapping Block Transform: Window Design, Fast Algorithm and an Image Coding Experiment. IEEE Transactions on Communications, 43(9). https://doi.org/10.1109/26.412714

MLA:

Edler, Bernd, and Miodrag Temerinac. "Overlapping Block Transform: Window Design, Fast Algorithm and an Image Coding Experiment." IEEE Transactions on Communications 43.9 (1995).

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