Sciweavers

VCIP
2000
146views Communications» more  VCIP 2000»
13 years 5 months ago
Novel video coding scheme using adaptive mesh-based interpolation and node tracking
An alternative method to H.263 for encoding of moving images at bit rates below 64 kbit/s is presented using adaptive spatial subsampling, mesh based interpolation and node tracki...
Eckhart Baum, Joachim Speidel
PICS
2001
13 years 5 months ago
An Autosophy Image Content-Based Television System
A first television system based on the Autosophy information theory is now being tested. The new television marks a major theoretical break from conventional television based on t...
Klaus Holtz, Eric Holtz
LCN
2000
IEEE
13 years 8 months ago
Nonlinear Time-Series Model for VBR Video Traffic
In this paper, variable bit rate (VBR) H.261 encoded video traffic is modeled by a nonlinear time series process. A threshold autoregressive (TAR) process is of particular interes...
Jimmie L. Davis, Kavitha Chandra, Charles Thompson
ICC
2000
IEEE
13 years 8 months ago
A Framework for the Analysis of Adaptive Voice over IP
— In this paper, we present a framework for the analysis of a set of adaptive variable-bit-rate voice sources in a packet network. The instantaneous bit rate of each source is de...
Claudio Casetti, J. C. De Martin, Michela Meo
ICPP
2002
IEEE
13 years 8 months ago
Optimal Video Replication and Placement on a Cluster of Video-on-Demand Servers
A cost-effective approach to building up scalable Videoon-Demand (VoD) servers is to couple a number of VoD servers together in a cluster. In this article, we study a crucial vide...
Xiaobo Zhou, Cheng-Zhong Xu
VLBV
2005
Springer
13 years 9 months ago
Reduced Frame Quantization in Video Coding
We vary the quantization parameter in H.264 video encoding by increasing it by a well-chosen offset in every other frame, which we call reduced frames. As the motion compensation ...
Tuukka Toivonen, Janne Heikkilä
VTC
2006
IEEE
142views Communications» more  VTC 2006»
13 years 9 months ago
Payload Length and Rate Adaptation for Throughput Optimization in Wireless LANs
— Wireless local area networks offer a range of transmitted data rates that are to be selected according to estimated channel conditions. However, due to packet overheads and con...
Sayantan Choudhury, Jerry D. Gibson
ISCAS
2007
IEEE
181views Hardware» more  ISCAS 2007»
13 years 10 months ago
Image Compression using 2D Dual-tree Discrete Wavelet Transform (DDWT)
—In this paper, we investigate image compression using 2D Dual-tree Discrete Wavelet Transform (DDWT), which is an overcomplete transform with direction-selective basis functions...
Jing-Yu Yang, Wenli Xu, Qionghai Dai, Yao Wang
ICC
2007
IEEE
156views Communications» more  ICC 2007»
13 years 10 months ago
CA-AQM: Channel-Aware Active Queue Management for Wireless Networks
—In a wireless network, data transmission suffers from varied signal strengths and channel bit error rates. To ensure successful packet reception under different channel conditio...
Yuan Xue, Hoang Nguyen, Klara Nahrstedt
ICASSP
2007
IEEE
13 years 10 months ago
Video Quality Metrics - An Analysis for Low Bit Rate Videos
Objective video quality metrics reported in the literature have so far been focused on TV signals with large frame sizes, full TV frame rates, and high compressed bit rates. The a...
Ee Ping Ong, Mei Hwan Loke, Weisi Lin, Zhongkang L...