Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Il-hong Shin"'
Publikováno v:
IEEE Transactions on Multimedia. 15:477-484
In this paper, a new fast encoding algorithm based on an efficient motion estimation (ME) process is proposed to accelerate the encoding speed of the scalable video coding standard. Through analysis of the ME process performed in the enhancement laye
Publikováno v:
IEEE Transactions on Broadcasting. 55:51-61
Commercial terrestrial digital multimedia broadcasting (T-DMB) service was launched in the Republic of Korea. Reflecting recent demands of high quality video, Advanced T-DMB(AT-DMB) adopting a hierarchical modulation is being developed as the way to
Autor:
HyunWook Park, Il-hong Shin
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 19:206-214
In the incoming amendment of H.264/AVC for scalable video coding (SVC), down and up-samplings in a spatial domain are incorporated for spatial scalability. A new two-fold up-sampling method is proposed for SVC. The proposed up-sampling method is base
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 16:1271-1279
Video sequences usually have many scene changes and contain rapid motion. The coding efficiency of such sequences is generally low, and the image quality fluctuates. If the rapid motion and scene changes are taken into consideration for video compres
Publikováno v:
Signal Processing: Image Communication. 19:341-352
The paper models relations of rate–ρ and QP–ρ, where ρ is defined as the percentage of zero coefficients in a frame. These two models are used for a frame-level rate-control of H.264. A linear approximation scheme is adopted to model the rate
Publikováno v:
International Journal of Imaging Systems and Technology. 13:115-125
In brain magnetic resonance (MR) images, image segmentation and 3D visualization are very useful tools for the diagnosis of abnormalities. Segmentation of white matter (WM), gray matter (GM), and cerebrospinal fluid (CSF) is the basic process for 3D
Publikováno v:
2009 Digest of Technical Papers International Conference on Consumer Electronics.
Reflecting the demand for a high quality video, Advanced T-DMB (AT-DMB) adopting a hierarchical modulation is being developed in order to increase the data payload. Based on the AT-DMB system, this paper proposes a method to provide the increased vid
Publikováno v:
ICIP (1)
Wavelet-based resolution enhancement methods improve the image resolution by estimating the high-frequency band information. In this paper, we propose a new resolution enhancement method using inter-subband correlation in which the sampling phase in
Autor:
HyunWook Park, Il-hong Shin
Publikováno v:
ICIP
In a scalable video coding (SVC), spatial up-sampling of video sequences is an important process for spatial scalability. We propose an up-sampling method based on the type-1 DCT. For further improvement of the up-sampling method, we introduce an ada
Publikováno v:
WSTFEUS
This paper proposes a transcoding method for frame rate reduction in H.264 video coding standard. H.264 adopts various block types and multiple reference frames for motion compensation. When frames are skipped to reduce frame rates in transcoder, it