Title :
Rate control of foveated MPEG video
Author :
Reeves, T.H. ; Robinson, J.A.
Author_Institution :
Dept. of Syst. Design Eng., Waterloo Univ., Ont., Canada
Abstract :
Adaptive foveated coding provides user-adjustable video quality at very flexible bit rates by prioritizing image regions. While viewing the video, the user can adjust the relative image fidelity in the high priority fovea region compared to the low priority periphery. We present a bit rate adaption system that reacts to user input to tradeoff foveal spatial resolution against peripheral spatial resolution appropriately, while controlling the output video´s bit rate. The rate adaptor relies on a mathematical model of the bit rates required to support the different foveal spatial resolution/peripheral spatial resolution combinations
Keywords :
adaptive codes; adaptive signal processing; channel capacity; code standards; data compression; image resolution; image segmentation; telecommunication control; telecommunication standards; video coding; adaptive foveated coding; bit rate adaption system; bit rate adaptor; bit rate control; foveal spatial resolution; foveated MPEG video; high priority fovea region; image fidelity; image regions; mathematical model; peripheral spatial resolution; quality of service parameters; user adjustable video quality; user input; Bit rate; Design engineering; Image coding; Meteorology; Quality of service; Size control; Spatial resolution; Systems engineering and theory; Transcoding; Video coding;
Conference_Titel :
Electrical and Computer Engineering, 1997. Engineering Innovation: Voyage of Discovery. IEEE 1997 Canadian Conference on
Conference_Location :
St. Johns, Nfld.
Print_ISBN :
0-7803-3716-6
DOI :
10.1109/CCECE.1997.614868
