VIDEO AND IMAGE COMPRESSION AND NOVEL TRANSFORMS

Classification-based macroblock layer rate control for low delay transmission of H.263 video

[+] Author Affiliations
Ulug Bayazit

Isik University, Electronics Engineering Department, Buyukdere Cad., 34398?Maslak, Istanbul, Turkey E-mail: bayazit@isikun.edu.tr

J. Electron. Imaging. 12(3), 499-510 (Jul 01, 2003). doi:10.1117/1.1579700
History: Received Jul. 16, 2001; Revised Mar. 7, 2002; Revised Jan. 23, 2003; Accepted Jan. 29, 2003; Online July 23, 2003
Text Size: A A A

Puri and Aravind’s method of macroblock bit count estimation for video rate control is based on the classification of the macroblock data into discrete classes and assigning a unique nonlinear estimate for each class and quantization parameter pair. This method stands apart from other methods in the literature, since the model of the bit count versus the quantization parameter relation, parameterized by macroblock variance, is a discrete model generated solely from measurements. We extend their technique for low-delay video rate control (tight buffer regulation) in two ways. We propose a strategy of near-uniform quantization parameter assignments to the macroblocks of a frame that can come close to maximizing an objective spatial quality function, such as PSNR, over the entire frame. We also adaptively update the quantization parameter assignments for the yet to be coded macroblocks, after the encoding of each macroblock, to compensate for any errors in the bit count estimation of the encoded macroblock. Our experiments demonstrate that the proposed rate control method can more accurately control the number of bits expended for a frame, as well as yield a higher objective spatial quality than the method adopted by TMN8. © 2003 SPIE and IS&T.

© 2003 SPIE and IS&T

Topics

Quantization ; Video

Citation

Ulug Bayazit
"Classification-based macroblock layer rate control for low delay transmission of H.263 video", J. Electron. Imaging. 12(3), 499-510 (Jul 01, 2003). ; http://dx.doi.org/10.1117/1.1579700


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.