Title :
Rate control for foveated MPEG/H.263 video
Author :
Lee, Sanghoon ; Pattichis, Marios S. ; Bovik, Alan C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
Abstract :
Given a set of target bits, video rate control algorithms that use Lagrange multipliers have been generally known as an optimal solution for maximizing the picture quality in the uniform spatial domain. Even if the SNR (signal-to-noise) of a picture is maximized by the rate control scheme, the visual quality can be enhanced using a suitable algorithm for the human visual system. We establish a new optimal rate control algorithm for maximizing the SNRC (signal-to-noise ratio in curvilinear coordinates) using the Lagrange multiplier. In addition, a target bit allocation technique for foveated video is introduced for simplified rate control over MEPG/H.263 video standards
Keywords :
code standards; image reconstruction; image sampling; optimisation; telecommunication control; telecommunication standards; video coding; visual perception; Lagrange multipliers; SNR; SNRC; curvilinear coordinates; foveated MPEG/H.263 video; human visual system; optimal rate control algorithm; picture quality; reconstructed picture; resampled image; signal-to-noise; uniform spatial domain; video standards; visual quality; Anatomy; Bandwidth; Bit rate; Frequency; Humans; Laboratories; Lagrangian functions; Optimal control; Videoconference; Visual system;
Conference_Titel :
Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
0-8186-8821-1
DOI :
10.1109/ICIP.1998.723382
