Title :
Region-based object tracking for multipoint video conferencing using wavelet transform
Author :
Fung, Kai-Tat ; Law, Ngai-Fong ; Siu, Wan-chi
Author_Institution :
Dept. of Electron. Eng., Hong Kong Polytech., Hung Hom, Hong Kong
Abstract :
The main features of our proposed wavelet-based video coder include: (1) a user-specified region of interest selection as to which the region can be changed by the user at any I-frame; (2) a dynamic region tracking technique by which the video is tracked and updated according to motion activity and (3) an adaptive bit allocation that allows the user to specify the relative quality between the foreground and the background. This architecture guarantees a high video quality in the region of interest while reducing the overall bit rate and the computation time. Experimental results confirm that the approach produces a good video quality even under low bit rates
Keywords :
adaptive signal processing; computational complexity; data compression; image motion analysis; teleconferencing; tracking; transform coding; video coding; wavelet transforms; I-frame; adaptive bit allocation; background quality; bit rate reduction; computation time reduction; dynamic region tracking; foreground quality; high video quality; low bit rates; motion activity; multipoint video conferencing; region-based object tracking; user-specified region of interest selection; video compression; video quality; wavelet transform; wavelet-based video coder; Bandwidth; Bit rate; Computer architecture; Consumer electronics; Internet; Tracking; Video compression; Video signal processing; Videoconference; Wavelet transforms;
Conference_Titel :
Consumer Electronics, 2001. ICCE. International Conference on
Conference_Location :
Los Angeles, CA
Print_ISBN :
0-7803-6622-0
DOI :
10.1109/ICCE.2001.935304
