Cell loss concealment and packetization in packet video
Changdae Lim, Evan Tan, M. Ghanbari, S. Ghanbari · International Journal of Imaging Systems and Technology · 1999
It is shown that in the process of cell loss concealment to improve picture quality, the quality of skipped parts of the picture, rather than being improved, are in fact degraded. We show that with more than 75% confidence, one can identify those parts that need concealment, and hence improve the overall picture quality by 1 dB. We also show that AAL1-type packetization is more suitable for video with regular intraframe-coded pictures (e.g. MPEG-1 and -2), while a different packetization strategy where the first macroblock in a cell is absolutely addressed is more suitable to the video without regular intraframe-coded pictures (e.g., H.261, 263). © 1999 John Wiley & Sons, Inc. Int J Imaging Syst Technol 10: 54–58, 1999