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Rate-distortion optimal joint macroblock mode selection and motion estimation for MPEG-like video coders

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2 Author(s)
Hyungjoon Kim ; Center for Signal & Image Process., Georgia Inst. of Technol., Atlanta, GA, USA ; Altunbasak, Y.

Rate-distortion optimization can significantly improve encoder performance in MPEG-like video coding applications especially when it is applied to coding mode selection and motion estimation. Nevertheless, it is not easy to implement rate-distortion optimization in real-time video encoders because of its prohibitive computational cost. In this paper, we propose a joint macroblock mode selection and motion estimation by employing a computationally-efficient, yet highly-effective rate-distortion model. Experimental results show that the proposed algorithm provides significant PSNR improvements with a small increase in overall computational load over the TM5-based encoder.

Published in:

Image Processing, 2004. ICIP '04. 2004 International Conference on  (Volume:2 )

Date of Conference:

24-27 Oct. 2004