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Proceedings Paper

Generic algorithms for motion compensation and transformation
Author(s): Henryk Richter; Benno Stabernack; Erika Müller
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Paper Abstract

In this paper, we propose algorithms that map the low-level motion compensation and transformation functions of MPEG-1/2, H.263/MPEG-4 ASP and H.264/MPEG-4 AVC video codecs onto common workflows. This way, a single discrete implementation of luma prediction, chroma prediction and residual transform stages is sufficient for all covered video coding standards. The proposed luma prediction is based on 4×4 blocks to cover the H.264 specifications as well as the elder standards. The design consists of a singular four stage pipeline for two block interpolation and two block averaging stages. Targeted for hardware implementation, a strictly linear execution is provided, avoiding branch operations. The algorithmic behavior is entirely dictated by the contents of the parameter ROM. Since chrominance prediction must cover blocks as small as 2×2 pixels, a distinct operation is proposed for chroma. The bilinear operation scheme in H.264 is able to carry out the operations for the elder standards with minor changes only. In H.264, the classic 8×8 DCT transformation was replaced by a simplified 4×4 integer transform, based on a heavily quantized DCT scheme. By modifications of a well-known multiplier-adder-based scheme, a generalized transformation stage can be derived.

Paper Details

Date Published: 26 February 2008
PDF: 12 pages
Proc. SPIE 6811, Real-Time Image Processing 2008, 68110U (26 February 2008); doi: 10.1117/12.766488
Show Author Affiliations
Henryk Richter, Univ. of Rostock (Germany)
Benno Stabernack, Fraunhofer-Institut for Telecommunications -- Heinrich-Hertz-Institut (Germany)
Erika Müller, Univ. of Rostock (Germany)

Published in SPIE Proceedings Vol. 6811:
Real-Time Image Processing 2008
Nasser Kehtarnavaz; Matthias F. Carlsohn, Editor(s)

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