摘要(英) |
IrDA is a so popular transmitted application in wireless communication and applied in the transmission of files generally. There is an application IrTran_P over it that be used to transmit JPEG pictures. With the increase of rate in IrDA, and the transmission of dynamic video is very significant in the technological time. So, we use IrTran_P to transmit H.263 is a novel application, we modified their some protocol information of connect, query, transmission and disconnect packets. This paper describes how we can transmit H.263 video data using IrTran_P protocol. We use the Tmn1.7 of H.263 simulate software that is provided by Telenor Research. In order to reach best performance in real time, we modified some changes of source code. Finally, we propose a new directional interpolation to do error concealment on broken images in this paper. It combines modified linear interpolation using nearest pixels with directional interpolation. Then, directional classifier and the block coordinates system are keys and discussed in the study. And we perform results to discuss. |
參考文獻 |
[1]IrTran-P (Infrared Transfer Picture) Specification IrDA
Application for Consumer Digital Cameras ,Version 1.0
October 1997
[2] http://www.irda.org 紅外線組織
[3] http://www.ti.com 德州儀器
[4]ITU-T Recommendation H.263, “Video coding for low bit-rate communication,” Nov. 1996.
[5] http://www.actisys.com/ ACTiSYS Corp智群科技網站
[6]Andrew S. Tanenbaum, “Computer network”,東華
[7] A. Narula and J.Lim, “Error concealment techniques for an
All-Digital High-Definition television system,” SPIE Visual
Communication and Image Processing, pp.304-315, Nov. 1993.
[8] W. Keck, “A method for robust decoding of erroneous MPEG-2
video bitstreams.” IEEE Transactions Consumer Electronics,
vol. 42, no. 3,pp.411-421, 1996
[9] M. Ghanbari and V. Seferidis, “Cell-loss concealment in ATM video codecs,” IEEE Transactions Circuits and Systems for Video Technique., vol. 3,no. 3, June 1993.
[10] S. Aign and K. Fazel , “Temporal and spatial error concealment techniques for hierarchical MPEG-2 Video Codec,” IEEE International Conference on Communication , vol. 3,pp. 1778-1783, 1995.
[11]S. J. Won and H. Y. Sung, “Directional interpolation for spatial error concealment,” International Conference on Consumer Electronics, pp. 26-27, 1997.
[12]S. J. Won and H. Y. Sung, “Error concealment base on directional interpolation ,” IEEE Transactions Consumer
Electronics, vol. 43,no. 3, 1997.
[13]H. Sun and W. Kwok, “Concealment of damaged block transform coded images using projection onto convex sets,” IEEE Transactions On Image Processing, vol 4, no, 4,
pp.470-477 ,April 1995.
[14]Rafael C. Gonzales and Richard E. Woods, 吳成柯、戴善榮、
程湘君、雲立實 譯,”數位影像處理,”, 第三版, June, 1996,
pp.419-444 儒林圖書公司.
[15]張真誠、黃國峰、陳同孝, “電子影像技術”, 初版, December,
2000, pp. 177-214, 松崗電腦圖書資料有限公司 |