Title :
3D wavelet video codec and its rate control in ATM network
Author :
Lin, Gang ; Liu, Zemin
Author_Institution :
Coll. of Telecom. Eng., Beijing Univ. of Posts & Telecommun., China
Abstract :
This paper presents a new video coding system based on the wavelet transform and its rate control scheme over ATM networks. First, the three dimensional (3D) wavelet transform is performed on the original image sequence, and an extension of set partitioning in hierarchical trees (SPIHT) algorithm is employed to quantize the wavelet coefficients. Then, the output rate of the coder is controlled at group of frame (GOF) scale, ensuring that it conforms to the parameters of a leaky bucket controller. Several leaky buckets with different sizes are discussed too. Our simulation shows the efficiency of this codec and the effectiveness of the proposed rate control scheme
Keywords :
asynchronous transfer mode; broadband networks; telecommunication control; trees (mathematics); video codecs; video coding; wavelet transforms; 3D wavelet transform; 3D wavelet video codec; ATM network; SPIHT algorithm; coder output rate control; group of frame scale; image sequence; leaky bucket controller; rate control scheme; set partitioning in hierarchical trees algorithm; wavelet coefficients; Asynchronous transfer mode; Bit rate; Image coding; Image sequences; Intelligent networks; Telecommunication control; Video codecs; Video coding; Wavelet domain; Wavelet transforms;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.780038
