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

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 computationallyefficient, 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.

• Type: Conference
• Year: 2004
• Where: ICIP
• Authors: Hyungjoon Kim, Yucel Altunbasak
• Keywords: ICIP 2004, Image Processing, Mode Selection, Motion Estimation, Overall Computational Load, Prohibitive Computational Cost, Rate-Distortion Optimization