@inproceedings{dfc88f44cb294596b0b222edf3760078,
title = "Kalman filter based H.264 motion vector recovery for error resilient video service over mobile GRID",
abstract = "The goal of mobile GRID is to provide the same QoS to mobile users as experienced by wired users. However, inherent unstable nature of the wireless network causes many challenges. Inherent characteristics make frequency disconnection, delay, and jitter. For the reason, we focus on the error resilience scheme for video communication over mobile GRID environments. We propose an error concealment technique to recover lost motion vectors at the H.264 decoder side. To recover the lost motion vectors, there are two simple techniques: (1) no prediction, where the lost motion vectors are set to zeros, and (2) the prediction using the average or median of spatially adjacent blocks{\textquoteright} motion vectors. In this paper, we propose a Kalman filter based scheme for motion vector recovery, and experimented with two test image sequences: Mobile&Calendar and Susie. The experimental results show that our Kalman filter based motion vector recovery scheme improves at average 2 dB PSNR over conventional H.264 decoding with no error recovery. We also improve our scheme using Hilbert curve scan order for Kalman input, and we get 0.512-1.652 dB PSNR improvements with better subjective quality over line-by-line scan order.",
keywords = "Error concealment, H.264, Hilbert curve, Kalman filter, Mobile GRID, Motion vector recovery",
author = "Ko, {Ki Hong} and Kim, {Seong Whan}",
note = "Publisher Copyright: {\textcopyright} Springer-Verlag Berlin Heidelberg 2006.; 3rd International Conference on Distributed Computing and Internet Technology, ICDCIT 2006 ; Conference date: 20-12-2006 Through 23-12-2006",
year = "2006",
doi = "10.1007/11951957_16",
language = "English",
isbn = "9783540683797",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Science and Business Media Deutschland GmbH",
pages = "168--179",
editor = "Madria, {Sanjay K.} and Claypool, {Kajal T.} and Rajgopal Kannan and Prem Uppuluri and Gore, {Manoj Madhava}",
booktitle = "Distributed Computing and Internet Technology - 3rd International Conference, ICDCIT 2006",
address = "Germany",
}