IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508
Regular Section
Flexible Combination of Time-Domain Lapped Transforms with Various Downsampling Factors
Yuichi TANAKAMadoka HASEGAWAShigeo KATO
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2012 Volume E95.A Issue 11 Pages 2049-2058

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Abstract
In this paper, we present a method to combine lapped transforms with various downsampling factors. The factor is changed depending on a local feature of a given signal, and it can be realized by using time-domain lapped transforms. In image coding application, our method maintains good image coding performance for a wide range of bitrates and fills the gap between undersampled and critically-/oversampled systems.
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© 2012 The Institute of Electronics, Information and Communication Engineers
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