Title :
Very low bit rate foveated video coding for H.263
Author :
Lee, Sanghoon ; Bovik, Alan C.
Author_Institution :
Lab. for Image & Video Eng., Texas Univ., Austin, TX, USA
Abstract :
Recently, foveated video has been introduced as an important emerging method for very low bit rate multimedia applications. In this paper, we develop several rate control algorithms, and measure the performance of foveated video. We utilize H.263 video, and compare the performance with regular video based on the SNRC (signal-to-noise-ratio in curvilinear coordinates). In order to maximize compression, we use a maximum quantization parameter (QP=31) for the regular video, and code a foveated video sequence at the equivalent bit rate. In simulation, we improve the PSNRC to 3.64 (1.62)dB under 30 (14) kbits/sec for P pictures in CIF “News” (“Akiyo”) standard video sequence
Keywords :
code standards; data compression; image sequences; quantisation (signal); rate distortion theory; video coding; H.263 video standard; curvilinear coordinates; foveated video; maximum quantization parameter; multimedia applications; rate control algorithms; rate distortion model; rate quantisation model; signal-to-noise-ratio; very low bit rate coding; video coding; video sequence; Bit rate; Frequency; Photoreceptors; Quadratic programming; Quantization; Redundancy; Video coding; Video compression; Video sequences; Visual system;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.757500
