Zobrazeno 71 - 80
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pro vyhledávání: '"Uk Lee"'
Autor:
Il Dong Tun, Sang Uk Lee
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 3:27-41
A fixed-point-error analysis for several 1D fast DCT algorithms is presented. For comparison, a direct-form approach is also included in the investigation. A statistical model is used as the basis for predicting the fixed-point error in implementing
Publikováno v:
IEEE transactions on image processing : a publication of the IEEE Signal Processing Society. 19(8)
The coding gain that can be achieved by improving the coding order of B frames in the H.264/AVC standard is investigated in this work. We first represent the coding order of B frames and their reference frames with a binary tree. We then formulate a
Publikováno v:
Computer Vision – ACCV 2009 ISBN: 9783642122965
ACCV (3)
ACCV (3)
In this paper, we propose an efficient method for finding consistent correspondences between two sets of features Our matching algorithm augments the discriminative power of each correspondence with the spatial consistency directly estimated from a g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10f1423c7abe36a8cac927b31f5e7820
https://doi.org/10.1007/978-3-642-12297-2_40
https://doi.org/10.1007/978-3-642-12297-2_40
Autor:
Sang Uk Lee, JongWon Kim
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 2:3-14
An image-coding technique, in which the discrete cosine transform (DCT) is combined with a classified vector quantization (CVQ), is presented. A DCT-transformed input block is classified according to the perceptual feature, partitioned into several s
Autor:
Nam Ik Cho, Sang Uk Lee
Publikováno v:
IEEE Transactions on Signal Processing. 40:2166-2173
The authors present an efficient algorithm for the computation of the 4*4 discrete cosine transform (DCT). The algorithm is based on the decomposition of the 4*4 DCT into four 4-point 1-D DCTs. Thus, only 1-D transformations and some additions are re
Publikováno v:
ICIP
A novel concept of channel division to improve the performance of distributed video coding is proposed in this work. At the decoder, the proposed algorithm partitions each side information frame into multiple regions with different expected distortio
Publikováno v:
MMSP
We propose a novel video codec that can distribute computational complexity between the encoder and the decoder in a flexible manner. Since motion estimation is the most computationally intensive part in video coding, it is important to share the mot
Publikováno v:
2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing.
An efficient distributed video coding algorithm using symmetric motion estimation and channel division is proposed in this work. We employ the symmetric motion estimation to generate high quality side information for Wyner-Ziv frames. Also, in the ch
Publikováno v:
Computational Imaging
A new video inpainting algorithm is proposed for removing unwanted or erroneous objects from video data. The proposed algorithm fills a mask region with source blocks from unmasked areas, while keeping spatio-temporal consistency. First, a 3-dimensio
Autor:
San Uk Lee, Nam Ik Cho
Publikováno v:
IEEE Transactions on Circuits and Systems. 38:297-305
An algorithm for the fast computation of a 2-D discrete cosine transform (DCT) is presented. It is shown that the N*N DCT, where N=2/sup m/, can be computed using only N 1-D DCTs and additions, instead of using 2N 1-D DCTs as in the conventional row-