Gerek, Ömer N.Çetin, A. Enis2016-02-082016-02-081998-05http://hdl.handle.net/11693/27670Date of Conference: 12-15 May 1998Conference name: Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98Subband decomposition techniques have been extensively used for data coding and analysis. In most filter banks, the goal is to obtain subsampled signals corresponding to different spectral bands of the original data. However, this approach leads to various artifacts in images containing text, subtitles, or sharp edges. In this paper, adaptive filter banks with perfect reconstruction property are presented for such images. The filters of the decomposition structure vary according to the nature of the signal. This leads to higher compression ratios for images containing subtitles compared to fixed filter banks. Simulation examples are presented.EnglishAdaptive filteringImage codingImage reconstructionSignal processingElectrical engineeringAdaptive filter bank structureAdaptive polyphase subband decomposition structuresImage compressionFilter banksData codingDecomposition structuresHigher compression ratiosPerfect reconstructionSharp edgesSimulation exampleSpectral bandSubband decompositionConference Paper10.1109/ICASSP.1998.681695