Rate allocation algorithms for motion compensated embedded video coders

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Author

J Prades-Nebot, GW Cook, EJ Delp

Entry type

article

Abstract

In this paper, we present two rate allocation algorithms for embedded motion compensated video coders. The algorithms are based on the modeling of both the video signal and the coder which allow us to express the coding distortion with a recurrence equation. Our algorithms assign rates to the frames of each group of pictures (GOP) of a video sequence in an optimum way. In the first algorithm, the criterion is to minimize the average (MENAVE) distortion and in the second to achieve constant distortion (CD) in all frames. Numerical simulations show the MENAVE criterion can introduce large variations in quality with no significant gains in average distortion with respect to the CD criterion. We also show how the motion estimation accuracy and the GOP length influence in both strategies.

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Date

2005 – 09

Journal

Image Processing, 2005. ICIP 2005. IEEE International Conference on

Key alpha

Delp

Pages

376-9

Volume

Publication Date

2005-09-01

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@Article{ Delp,
	title = "Rate allocation algorithms for motion compensated embedded video coders",
	author = "J Prades-Nebot, GW Cook, EJ Delp",
	year = "2005",
	month = "09",
	journal = "Image Processing, 2005. ICIP 2005. IEEE International Conference on",
	pages = "376-9",
	volume = "3",
	abstract = "In this paper, we present two rate allocation algorithms for embedded motion compensated video coders. The algorithms are based on the modeling of both the video signal and the coder which allow us to express the coding distortion with a recurrence equation. Our algorithms assign rates to the frames of each group of pictures (GOP) of a video sequence in an optimum way. In the first algorithm, the criterion is to minimize the average (MENAVE) distortion and in the second to achieve constant distortion (CD) in all frames. Numerical simulations show the MENAVE criterion can introduce large variations in quality with no significant gains in average distortion with respect to the CD criterion. We also show how the motion estimation accuracy and the GOP length influence in both strategies.",
}