Title :
On the extraction of DC sequence from MPEG compressed video
Author :
Yeo, Boon-Lock ; Liu, Bede
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., NJ, USA
Abstract :
Reduced images formed from the collection of DC coefficients in intra-coded DCT compressed video retain a “global” feature which is useful for processing purposes. This paper examines the direct reconstruction of such DC images from motion-compensated P-frames and B-frames of MPEG compressed video. Exact expressions are derived and approximations are given for the computational speedup. The analysis and experimental results show that the approximations yield images that are very close to the true ones
Keywords :
approximation theory; computational complexity; data compression; discrete cosine transforms; feature extraction; image reconstruction; image sequences; motion compensation; transform coding; video coding; DC coefficients; DC sequence extraction; MPEG compressed video; approximations; computational speedup; exact expressions; experimental results; global feature; image reconstruction; intracoded DCT compressed video; motion-compensated B-frames; motion-compensated P-frames; reduced images; Data mining; Discrete cosine transforms; Image analysis; Image coding; Image reconstruction; Linear matrix inequalities; Linearity; Transform coding; Video compression;
Conference_Titel :
Image Processing, 1995. Proceedings., International Conference on
Conference_Location :
Washington, DC
Print_ISBN :
0-8186-7310-9
DOI :
10.1109/ICIP.1995.537464
