Joint wavelet packets for groups of frames in MCTF

Maria Trocan; Christophe Tillier; Beatrice Pesquet-Popescu

doi:10.1117/12.623713

15 September 2005 Joint wavelet packets for groups of frames in MCTF

Maria Trocan, Christophe Tillier, Beatrice Pesquet-Popescu

Proceedings Volume 5909, Applications of Digital Image Processing XXVIII; 59090B (2005) https://doi.org/10.1117/12.623713
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Wavelet packets provide a flexible representation of data, which has been proved to be very useful in a lot of applications in signal, image and video processing. In particular, in image and video coding, their ability to best capture the input content features can be exploited by designing appropriate optimization criteria. In this paper, we introduce joint wavelet packets for groups of frames, allowing to provide a unique best basis representation for several frames and not one basis per frame, as classically done. Two main advantages are expected from this joint representation. On the one hand, bitrate is spared, since a single tree description is sent instead of 31 per group of frames (GOP) - when a GOP contains, for example, 32 frames. On the other hand, this common description can characterize the spatio-temporal features of the given video GOP and this way can be exploited as a valuable feature for video classification and video database searching. A second contribution of the paper is to provide insight into the modifications necessary in the best basis algorithm (BBA) in order to cope with biorthogonal decompositions. A computationally efficient algorithm is deduced for an entropy-based criterion.

Citation Download Citation

Maria Trocan, Christophe Tillier, and Beatrice Pesquet-Popescu "Joint wavelet packets for groups of frames in MCTF", Proc. SPIE 5909, Applications of Digital Image Processing XXVIII, 59090B (15 September 2005); https://doi.org/10.1117/12.623713

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available