Name
Abstract | ||
|---|---|---|
A common theory of lapped orthogonal transforms (LOT's) and critically sampled filter banks, called ''L into N coding'' (LINC), is presented. The theory includes a unified analysis of both coding methods and identity relations between transform, inverse transform, analysis filter bank, and synthesis filter bank. A design procedure for LINC-analysis/synthesis systems, which satisfy the conditions for perfect reconstruction, is developed.The common LINC-theory is used to define an ideal LINC system, with which theoretical bounds for the coding gain are calculated using the power spectral density of the input signal. A generalized overlapping block transform (OBT) with time domain aliasing cancellation (TDAC) is used to approximate the ideal LINC. The generalization of the OBT includes multiple block overlap and additional windowing. A recursive design procedure for windows of arbitrary lengths is presented. The coding gain of the generalized OBT is higher than that of the KLT and close to the theoretical bounds of LINC. In the case of image coding, the generalized OBT reduces the blocking effects when compared to the DCT. |
Year | DOI | Venue |
|---|---|---|
1993 | 10.1109/26.216496 | IEEE Transactions on Communications |
Keywords | Field | DocType |
block codes,encoding,filtering and prediction theory,image coding,transforms,L into N coding,LINC,additional windowing,analysis filter bank,blocking effects,coding gain,critically sampled filter banks,generalized overlapping block transform,image coding,inverse transform,lapped orthogonal transforms,multiple block overlap,perfect reconstruction,power spectral density,recursive design procedure,source coding,subband coding,synthesis filter bank,time domain aliasing cancellation,transform coding | Coding gain,Orthogonal transformation,Computer science,Block code,Filter bank,Discrete cosine transform,Electronic engineering,Transfer function,Aliasing,Sub-band coding | Journal |
Volume | Issue | ISSN |
41 | 2 | 0090-6778 |
Citations | PageRank | References |
7 | 2.13 | 13 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| M Temerinac | 1 | 10 | 3.32 |
| B Edler | 2 | 46 | 9.21 |