Speeding up the optimization of the rate distortion performance in MPEG-2 video coding through quantizer loop parameterization

Christos Grecos; A. Saparon

doi:10.1117/12.476434

7 May 2003 Speeding up the optimization of the rate distortion performance in MPEG-2 video coding through quantizer loop parameterization

Christos Grecos, A. Saparon

Author Affiliations +

Proceedings Volume 5022, Image and Video Communications and Processing 2003; (2003) https://doi.org/10.1117/12.476434
Event: Electronic Imaging 2003, 2003, Santa Clara, CA, United States

Abstract

A simple scheme for fast Rate Distortion optimization based on Lagrange multipliers is presented in this paper. It is based on the observation that for accurate target rates, the change of the multiplier alone may not have an effect for small step sizes. However, a combination of small step sizes alogn with appropriate quantizer loop parameterization may solve this problem thus result in in significant computaiotnal savings since only a portion of the Rate distortion characteristics need to be considered for optimization. Extensive experiments using quantizer loop parameterization reveal savings between 60.14 and 92.94% for the rate bounding case and between 56.48 and 91.01% for the bisection search for a wide variety of video sequences exhibiting different characteristics.

Citation Download Citation

Christos Grecos and A. Saparon "Speeding up the optimization of the rate distortion performance in MPEG-2 video coding through quantizer loop parameterization", Proc. SPIE 5022, Image and Video Communications and Processing 2003, (7 May 2003); https://doi.org/10.1117/12.476434

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