| Title |
A new wavelet-based approach to progressive encoding of regions of interest in a digital signal |
| Another Title |
Naujas bangelėmis grįstas požiūris į progresyvųjį skaitmeninio signalo fragmentų kodavimą. |
| Authors |
Valantinas, Jonas ; Kančelkis, Deividas |
| Full Text |
|
| Is Part of |
Informacinės technologijos ir valdymas = Information technology and control.. Kaunas : Technologija. 2009, t. 38, Nr. 3, p. 195-202.. ISSN 1392-124X. eISSN 2335-884X |
| Keywords [eng] |
Discrete wavelet transform ; Progressive signal compression ; ROI coding |
| Abstract [eng] |
Progressive digital signal encoding and subsequent transmission refer to signal compression techniques that allow both the original signal reconstruction without loss of any detail and the construction of signal approximations (estimates) with the accuracy level depending on the amount of data available. Locally progressive encoding and transmission can be achieved by first transmitting a "rough" estimate of the original signal, then sending further details related to one or another selected block (region of interest - ROI) of the signal. In this paper, we propose a new wavelet-based approach to implementing of a locally progressive digital signal coding idea. The proposed approach explores both the newly developed fast procedures for evaluation of the discrete wavelet (Haar, LeGall) transform for particular selected ROI in the digital signal and the zero-tree-based encoders with an improved zero-tree analysis scheme. |
| Published |
Kaunas : Technologija |
| Type |
Journal article |
| Language |
English |
| Publication date |
2009 |
| CC license |
|
