Perpustakaan Fakultas Ilmu Komputer

Call Number	SEM - 362
Collection Type	Indeks Artikel prosiding/Sem
Title	Interpolation technique to improve unsupervised motion vector learning of wyner-ziv video coding ( hal 366- 370)
Author	I M.O. Widyantara, N.P. Sastra, D.M. Wiharta, Wirawan, G. Hendrantoro;
Publisher	Proceedings ICSIIT 2010: International conference on soft computing intelligent system and information technology 1-2 July 2010 Bali Indonesia
Subject	WZ video coding, nearest-neighbor interpolation, bilinear interpolation, EM algorithm
Location

Lokasi : Perpustakaan Fakultas Ilmu Komputer

Nomor Panggil	ID Koleksi	Status
SEM - 362		TERSEDIA

Tidak ada review pada koleksi ini: 47925

One major problem in Wyner-Ziv video coding with unsupervised motion vector learning is one the quality of blockwise motion estimator. nearest neighbor interpolation of block -wise motion vector field onto pixelwise motion vector field in fact creates step-like transitions at block boundaries. the actual pixelwise motion vector field has smooth transitions across space. this paper proposes method of bilinear interpolation to improve pixelwise motion vector field which mitigates the boundary effets. the implementation of this method in WZ video codec with unsupervised motion vector learning has led to 3-4 % and 6-7% bit rate saving for GOP 2 and 8 respectively, when compare to nearest-neighbor interpolation method. rate-distortion performance improved to 0.46 dB and 0.27 db for GOP 2 and 8 respectively.