公开(公告)号：JP2003133962A

公开(公告)日：2003-05-09

申请号：JP2002225755

申请日：2002-08-02

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BERNARDINI RICCARDO ,  KOVACEVIC JELENA

IPC: H04N7/30 ,  H03H17/02 ,  H03M1/00 ,  H03M7/30 ,  H04N7/26

Abstract: PROBLEM TO BE SOLVED: To provide a method for encoding and decoding information included in images and videos. SOLUTION: A method and apparatus for encoding/decoding multi-dimensional signals are disclosed. An unseparable multi-dimensional filter is used. Analysis filter multi-dimensional signals are encoded by applying a window function and a contraction function to the signals. According to this operation, a prototype is generated. A required number of the prototypes can be duplicated by utilizing a modulation function. The encoded signals are decoded by utilizing a process reverse to the encoding process by a composite filter.

公开(公告)号：EP0789454A3

公开(公告)日：1998-06-10

申请号：EP97300687

申请日：1997-02-04

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BERNARDINI RICCARDO ,  KOVACEVIC JELENA

IPC: G10L19/02 ,  H03H17/02 ,  H03M7/30

CPC classification number: H03H17/0266

Abstract: Non-uniform filters are designed with a method which utilizes an orthogonal subbanding technique. A tiling representation of a signal is established. The signal is localized for both time and frequency using a mixed tiling representation of the signal. A prototype is then established using the joint time frequency representation of the signal. Lastly, non-uniform filters are developed utilizing the prototype.