Extended analysis of motion-compensated frame difference for block-based motion prediction error

2006-2007 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

New pixel-DCT domain coding technique for object based and frame based prediction error

2004-2005 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

New adaptive partial distortion search using clustered pixel matching error characteristic

2003-2004 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Priority search technique for MPEG-4 motion estimation of arbitrarily shaped video object

2001-2002 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Block motion estimation using adaptive partial distortion search

Centre for Multimedia Signal Processing, Department of Electronic and Information EngineeringRefereed conference paper2002-2003 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

A block motion vector estimation using pattern based pixel decimation

Version of RecordPublishe

Antiviral agents and corticosteroids in the treatment of severe acute respiratory syndrome (SARS)

published_or_final_versio

Supporting efficient authorization in delegation with supervision

Delegation is commonly used in organizations to transfer some permission by one user to another user. However, most existing delegation schemes do not support supervision, which allows the delegators to retain control over how the delegated permission can be exercised. In this paper, we will describe how to support efficient authorization in delegation with supervision using proxy signature techniques. © 2005 IEEE.published_or_final_versio

Using self-driven AC-DC synchronous rectifier as a direct replacement for traditional power diode rectifier

Synchronous rectification has previously been adopted in switched-mode circuits for reducing the conduction losses particularly in high-frequency, low-voltage, and high-current applications. This paper presents a generalized self-driven ac-dc synchronous rectification technique that can be used even at mains frequency to develop an ac-dc synchronous rectifier that behaves like a diode bridge but with much reduced conduction losses and without control integrated circuits. This generalized concept can be extended from single-phase to multiphase systems. Experiments based on 1- and 2-kW single-phase systems have been successfully conducted for capacitive, inductive, and resistive loads. Very significant power loss reduction (over 50%) has been achieved in the rectification stage at both 110- and 220-V ac mains operations. This patent-pending circuit can be regarded as a direct replacement of a general-purpose diode rectifier. Due to the reduction of power loss, further reduction in the size and cost of the heat sink or thermal management for the power circuit becomes possible. © 2011 IEEE.published_or_final_versio

Change in endogenous nitric oxide production in the healing of gastric ulcer induced by acetic acid

published_or_final_versio