Title :
A control scheme for a data rate scalable video codec
Author :
Shen, Ke ; Delp, Edward J.
Author_Institution :
Comput. Vision & Image Process. Lab., Purdue Univ., West Lafayette, IN, USA
Abstract :
We present a control scheme for a rate scalable video codec. We describe a wavelet based video codec with motion compensation used to reduce temporal redundancy. The prediction error frames are encoded using an embedded zerotree wavelet (EZW) approach which allows data rate scalability. Since motion compensation is used in the algorithm, the duality of the decoded video may decay due to the propagation of errors in the temporal domain. An adaptive motion compensation scheme is proposed to address this problem. We show that using our control scheme the quality of the decoded video can be maintained at any data rate
Keywords :
adaptive signal processing; channel capacity; motion compensation; telecommunication control; transform coding; video codecs; video coding; wavelet transforms; adaptive motion compensation; algorithm; control scheme; data rate scalability; data rate scalable video codec; decoded video; embedded zerotree wavelet; error propagation; prediction error frames; temporal domain; temporal redundancy reduction; wavelet based video codec; Computer vision; Decoding; Motion compensation; Redundancy; Scalability; Signal to noise ratio; Transform coding; Video codecs; Video compression; Video sequences;
Conference_Titel :
Image Processing, 1996. Proceedings., International Conference on
Conference_Location :
Lausanne
Print_ISBN :
0-7803-3259-8
DOI :
10.1109/ICIP.1996.560603
