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ICASSP
2007
IEEE
9 years 6 months ago
Unsupervised Audio Segmentation using Extended Baum-Welch Transformations
Audio segmentation has applications in a variety of contexts, such as audio information retrieval, automatic sound analysis, and as a pre-processing step in speech recognition. Ex...
Tara N. Sainath, Dimitri Kanevsky, Giridharan Iyen...
ICASSP
2007
IEEE
9 years 6 months ago
Subjective Quality Evaluation of Decoded Video in the Presence of Packet Losses
This paper investigates the perceptual quality of decoded video bitstreams after packet losses. We focus on lowresolution and low-bit rate video coded by the H.264/AVC encoder, an...
Tao Liu, Yao Wang, Jill M. Boyce, Zhenyu Wu, Hua Y...
ICASSP
2007
IEEE
9 years 6 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...
ICASSP
2007
IEEE
9 years 6 months ago
ICA-Based Algorithms Applied to Image Coding
Recently, Narozny et al [1] proposed a new viewpoint in variable high-rate transform coding. They showed that the problem of finding the optimal 1-D linear block transform for a ...
Michel Narozny, Michel Barret
ICASSP
2007
IEEE
9 years 6 months ago
Block Size Forensic Analysis in Digital Images
In non-intrusive forensic analysis, we wish to find information and properties about a piece of data without any reference to the original data prior to processing. An important ...
Steven Tjoa, Wan-Yi Sabrina Lin, H. Vicky Zhao, K....
ICASSP
2007
IEEE
9 years 6 months ago
Blind Source Separation Based on a Beamformer Array and Time Frequency Binary Masking
This paper deals with a new technique for blind source separation (BSS) from convolutive mixtures. We present a three-stage separation system employing time-frequency binary maski...
Jan Cermak, Shoko Araki, Hiroshi Sawada, Shoji Mak...
ICASSP
2007
IEEE
9 years 6 months ago
A Self-Training Semi-Supervised Support Vector Machine Algorithm and its Applications in Brain Computer Interface
In this paper, we analyze the convergence of an iterative selftraining semi-supervised support vector machine (SVM) algorithm, which is designed for classi cation in small trainin...
Yuanqing Li, Huiqi Li, Cuntai Guan, Zhengyang Chin
ICASSP
2007
IEEE
9 years 6 months ago
Maximum Likelihood Sound Source Localization for Multiple Directional Microphones
This paper presents a maximum likelihood (ML) framework for multimicrophone sound source localization (SSL). Besides deriving the framework, we focus on making the connection and ...
Cha Zhang, Zhengyou Zhang, Dinei A. F. Florê...
ICASSP
2007
IEEE
9 years 6 months ago
A New Rotation Search for Dependent Rate-Distortion Optimization in Video Coding
We present a novel search algorithm which is suitable for optimizing functions with a high-dimensional discrete-valued parameter vector. The algorithm is designed to find a funct...
Tuukka Toivonen, Loren Merritt, Ville Ojansivu, Ja...
ICASSP
2007
IEEE
9 years 6 months ago
A Multi-Subject, Dynamic Bayesian Networks (DBNS) Framework for Brain Effective Connectivity
As dynamic connectivity is shown essential for normal brain function and is disrupted in disease, it is critical to develop models for inferring brain effective connectivity from ...
Junning Li, Z. Jane Wang, Martin J. McKeown
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