Flexible Combination of Time-Domain Lapped Transforms with Various Downsampling Factors
Yuichi Tanaka, Madoka Hasegawa, Shigeo Kato · IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences · 2012
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.