Scene adaptive bit-rate control method on MPEG video coding

Myungjin Lee; Soon-kak Kwon; Jae-Kyoon Kim

doi:10.1117/12.263221

10 January 1997 Scene adaptive bit-rate control method on MPEG video coding

Myungjin Lee, Soon-kak Kwon, Jae-Kyoon Kim

Proceedings Volume 3024, Visual Communications and Image Processing '97; (1997) https://doi.org/10.1117/12.263221
Event: Electronic Imaging '97, 1997, San Jose, CA, United States

Abstract

This paper presents a simple bitrate control method to percent the abrupt quality degradation after scene change. After scene change, the quality degradation occurs due to the poor temporal prediction between pictures before and after scene change. We predict the coding complexity of picture using the spatial variance before DCT and spectral flatness measure. From the predicted coding complexity, we show that the rate-distortion relation of image can be approximated to exponential function. When scene changes, picture target bit is adjusted in the direction to minimize the distortion in a GOP using the rate-distortion relations for each P-picture. Since the bit shortage could be occurred, proposed method extends the current GOP to the next. The algorithm can be applied to the existing MPEG codecs and real-time applications easily. Compared with the MPEG-2 TM5 rate control algorithm, proposed algorithm shows 0.5 to approximately 2.5 dB gain in PSNR and a small fluctuation in quality after scene change.

Citation Download Citation

Myungjin Lee, Soon-kak Kwon, and Jae-Kyoon Kim "Scene adaptive bit-rate control method on MPEG video coding", Proc. SPIE 3024, Visual Communications and Image Processing '97, (10 January 1997); https://doi.org/10.1117/12.263221

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