Title :
Modified a posteriori mode decision for HD-MAC system
Author :
Lee, Si-Woong ; Kim, Seong-Dae ; Kim, Jong-Hun ; Lee, Ki-Bong ; Jang, Kyu-Hwan
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
A mode decision method for the motion-compensated three-branch HD-MAC system is described. The conventional mode decision method consists of a priori and a posteriori decisions. The correctness of the mode decision has a considerable influence on the picture quality at HD-MAC receivers. The conventional scheme, however, does not provide a good decision result. Thus, a new method by which the modes of blocks ca be determined more correctly is proposed. This method is based on frame-exchange and motion-compensated interpolation. The performance of this method is shown to be better than that of the conventional ones
Keywords :
image processing; interpolation; television standards; frame-exchange; interpolation; mode decision method; motion-compensated three-branch HD-MAC system; picture quality; Bandwidth; Costs; Decoding; HDTV; Interpolation; Low pass filters; Satellite broadcasting; Spatial resolution; Velocity measurement; Visual communication;
Journal_Title :
Consumer Electronics, IEEE Transactions on
