Abstract OPERATION RESEARCH APPROACH TOWARDS LAYERED MULTI-SOURCE VIDEO DELIVERY (2008)
Lai-tee Cheok, Ros Eleftheriadis
We address the problem of rate scaling of multiple layered video streams in applications such as a multi-camera video surveillance system. This differs from the single video streaming scenario in...
Algorithms for Multiplex Scheduling of Object-Based Audio-Visual Presentations (2008)
With the emergence of standards such as MPEG-4, systems and applications using objectbased audio-visual presentations will become more and more common. The main distinguishing feature of object-based...
END-TO-END QoS MANAGEMENT FOR ADAPTIVE VIDEO FLOWS (2008)
Andrew Campbell, Ros Eleftheriadis, Cristina Aurrecoechea
Distributed audio and video applications need to adapt to fluctuations in delivered quality of service (QoS). By trading off temporal and spatial quality to available bandwidth, or manipulating the...
Spatio-Temporal Model-Assisted Very Low Bitrate Coding with Compatibility (2007)
Jae-Beom Lee, Ros Eleftheriadis
We propose the concept of Spatio-Temporal Model-Assisted Compatible (STMAC) coding and Motion Adaptive Spatio-Temporal Model-Assisted Compatible (MA-STMAC) coding, two techniques that selectively...
Shih-Fu Chang, Alexandros Eleftheriadis, and Dimitris Anastassiou (2007)
Shih-fu Chang, Ros Eleftheriadis, Dimitris Anastassiou
This paper reports on our progress in developing an advanced video-on-demand (VOD) testbed, which will accommodate various multimedia research and applications such as Electronic News on Demand,...
Ti-hao Chiang, Robert Mokry, Feng-ming Wang, Alexandros Eleftheriadis, Ros Eleftheriadis, ...
A high-compression technique is presented for coding digital interlaced HDTV. A key feature of the method consists of coding the even fields using information from the neighboring odd fields, which...
End-To-End QoS Management for Adaptive Video Flows (2007)
Andrew Campbell, Alexandros Eleftheriadis, Ros Eleftheriadis, Cristina Aurrecoechea
this paper we introduce dynamic QoS management (DQM) for the control and management of multi-layer coded flows operating in heterogeneous multimedia networking environments. Two key techniques are...
A framework for optimal scheduling of structured and streaming media (2007)
Pankaj Batra, Pankaj Batra, Ros Eleftheriadis, Ros Eleftheriadis
1.
END-TO-END QoS MANAGEMENT FOR ADAPTIVE VIDEO FLOWS (2007)
Andrew Campbell, Ros Eleftheriadis, Cristina Aurrecoechea
Distributed audio and video applications need to adapt to fluctuations in delivered quality of service (QoS). By trading off temporal and spatial quality to available bandwidth, or manipulating the...
OPTIMAL SHAPE CODING UNDER BUFFER CONSTRAINTS (2007)
Jae-beom Lee, Jin-soo Cho, Ros Eleftheriadis
In this paper, we consider an optimal rate control algorithm for shape coding of emerging MPEG-4 compression system. Current MPEG-4 shape coding consists of two sub-steps; First distortion is...
Automatic Generation of Entropy Coding Programs Using Flavor (2007)
Abstract- Flavor (Formal Language for Audio-Visual Object Representation) is a new programming language for media-intensive applications. It extends the typing system of C++ and Java to incorporate...
Alternative formulations for bit allocation with dependent quantization (2002)
Pankaj Batra, Ros Eleftheriadis, Jay Sethuraman
We discuss formulations to solve the bit-allocation problem with dependencies. These formulations are more generic than those known earlier in that we relax a so-called causality assumption. We study...
DEPARTMENT OF ELECTRICAL ENGINEERING (2002)
Lai-tee Cheok, Ros Eleftheriadis, Lai-tee Cheok, Ros Eleftheriadis
The technical reports in this series are considered to be semi-formal. The ideas expressed are solely those of the authors, and questions about the content should be directed to them. SMIL vs MPEG-4...
Representing information with computational resource bounds (1998)
A general framework for data compression, in which computational resource bounds are introduced at both the encoding and decoding end, is presented. We move away from Shannon's traditional...
Streaming Video using Dynamic Rate Shaping and TCP Congestion Control (1998)
Stephen Jacobs, Ros Eleftheriadis
We present a new technique for streaming real time video on today's Internet, based on dynamic rate shaping and TCP congestion control. Dynamic rate shaping is a signal processing technique that...
2-D Transform Domain Resolution Translation (1998)
Jae-beom Lee, Ros Eleftheriadis
The extensive use of discrete transforms such as the Discrete Cosine Transform in image and video coding suggests the investigation on ltering before down sampling (FBDS) and ltering after up...
Real-Time Video on the Web using Dynamic Rate Shaping (1997)
Stephen Jacobs, Ros Eleftheriadis
We propose an architecture which can support video services in networks which have no Quality of Services (QoS) guarantees. We demonstrate that there is a need for such services today and also in the...
Shih-fu Chang, Alexandros Eleftheriadis, Ros Eleftheriadis, Robert McClintock
Content creation, editing, and searching are extremely time consuming tasks that often require substantial training and experience, especially when high-quality audio and video are involved....
Complexity Distortion Theory (1997)
We investigate the efficiency of lossy algorithmic representations of information and show that "Complexity Distortion" is asymptotically equivalent to Rate Distortion for stationary...
Complexity Distortion Theory (1997)
Daby Sow, Alexandros Eleftheriadis, Ros Eleftheriadis
We propose a new theory, called Complexity Distortion Theory, which uses complexities or length of lossy descriptions to provide a much broader and unifying perspective on media representation. The...
Columbia's VoD and Multimedia Research Testbed with Heterogeneous Network Support (1997)
Shih-fu Chang, Alexandros Eleftheriadis, Ros Eleftheriadis, Dimitris Anastassiou, Stephen Jacobs, Hari Kalva, ...
This paper reports our progress in developing an advanced video-on-demand (VoD) testbed, which will be used to accommodate various multimedia research and applications such as Electronic News on...
A Practical Methodology for Guaranteeing Quality of Service for Video-on-Demand (1997)
Javier Zamora, Stephen Jacobs, Alexandros Eleftheriadis, Ros Eleftheriadis, Shih-fu Chang, Dimitris Anastassiou
A novel and simple approach for defining end-to-end Quality of Service (QoS) in Video-onDemand (VoD) services is presented. Using this approach we derive a schedulable region for a video server which...
Algorithmic Representation of Visual Information (1997)
Daby Sow, Alexandros Eleftheriadis, Ros Eleftheriadis
In [6], we have introduced Complexity Distortion Theory, a mathematical framework characterizing the design of programmable communication systems. In this paper, we show how Complexity Distortion...
DAVIC and Interoperability Experiments (1997)
Hair Kalva, Shih-fu Chang, Alexandros Eleftheriadis, Ros Eleftheriadis
: To promote the development and deployment of broadband audio visual services, DAVIC has been working on specifying the standards and interfaces for end-to-end systems providing services to...
Flavor: A Language for Media Representation (1997)
Alexandros Eleftheriadis, Ros Eleftheriadis, Yihan Fang
We present the design and implementation of a new programming language for media-intensive applications called Flavor (Formal Language for Audio-Visual Object Representation). It is an extension of...
Motion Adaptive Model-Assisted Compatible Coding With Spatio-Temporal Scalability (1997)
Jae-Beom Lee, Ros Eleftheriadis
We introduce the concept of Motion Adaptive Spatio-Temporal Model-Assisted Compatible (MA-STMAC) coding, a technique to selectively encode areas of different importance to the human eye in terms of...
Silence Detection for Multimedia Communication Systems (1997)
Stephen Jacobs, Alexandros Eleftheriadis, Ros Eleftheriadis, Dimitris Anastassiou
. Silence detection and removal is an essential building block of any multimedia video conferencing system. It reduces the bandwidth requirements of the underlying network transport service and helps...
Real-Time Dynamic Rate Shaping and Control for Internet Video Applications (1997)
Stephen Jacobs, Alexandros Eleftheriadis, Ros Eleftheriadis
We present a novel framework for supporting video in today's Internet. Our technique is novel in that it employs image processing and networking techniques which work together to provide the...
ZAMORA ET. AL: A PRACTICAL METHODOLOGY FOR GUARANTEEING QOS FOR VOD 1 (1997)
Javier Zamora, Stephen Jacobs, Ros Eleftheriadis, Shih-fu Chang, Dimitris Anastassiou
Anovel and simple approach for de ning end-to-end Quality of Service (QoS) in Video-on-Demand (VoD) services is presented. Using this approach we derive aschedulable region for a video server which...
Real-time dynamic rate shaping and control for internet video applications (1997)
Stephen Jacobs, Ros Eleftheriadis
We present anovel framework for supporting video in today's Internet. Our technique is novel in that it employs image processing and networking techniques which work together to provide the best...
DAVIC and Interoperability Experiments (1997)
Hari Kalva, Shih-fu Chang, Ros Eleftheriadis
Abstract: To promote the development and deployment of broadband audio visual services, DAVIC has been working on specifying the standards and interfaces for end-to-end systems providing services to...
Multimedia Systems Manuscript Nr. (will be inserted by hand later) Silence (1997)
Stephen Jacobs, Ros Eleftheriadis, Dimitris Anastassiou
detection for multimedia communication systems
Video pump design for interoperability with set top units: The case against small pdus (1996)
Stephen Jacobs, Ros Eleftheriadis
The deployment of video services to the home will continue to push the development of low cost Digital Set Top Units (STUs) for decoding MPEG video. One technique for reducing cost is to minimize the...
Columbia's VoD and Multimedia Research Testbed with Heterogeneous Network Support (1996)
Shih-fu Chang, Alexandros Eleftheriadis, Ros Eleftheriadis, Dimitris Anastassiou, Stephen Jacobs, Hari Kalva, ...
: This paper reports our progress in developing an advanced video-on-demand (VoD) testbed, which will be used to accommodate various multimedia research and applications such as Electronic News on...
A Practical Methodology for Guaranteeing Quality of Service for Video-on-Demand (1996)
Javier Zamora Stephen, Stephen Jacobs, Ros Eleftheriadis, Shih-fu Chang, Dimitris Anastassiou
A novel and simple approach for defining end-to-end Quality of Service (QoS) in Video-onDemand (VoD) services is presented. Using this approach we derive a schedulable region for a video server which...
Spatio-Temporal Model-Assisted Compatible Coding For Low And Very Low Bitrate Videotelephony (1996)
Jae-beom Lee, Ros Eleftheriadis
We introduce the concept of Spatio-Temporal ModelAssisted Compatible (STMAC) coding, a technique to selectively encode areas of different importance to the human eye in terms of space and time in...
A Syntactic Framework For Bitstream-Level Representation Of Audio-Visual Objects (1996)
Yihan Fang And, Yihan Fang, Ros Eleftheriadis
We present the design of a novel syntactic and semantic framework to describe the bitstream-level representation of audio-visual information objects. This framework is important for emerging...
Development of Columbia's Video on Demand Testbed (1996)
Shih-fu Chang, Alexandros Eleftheriadis, Ros Eleftheriadis, Dimitris Anastassiou
This paper reports on our progress in developing an advanced video-on-demand (VOD) testbed, which will accommodate various multimedia research and applications such as Electronic News on Demand,...
A Syntactic Framework For Bitstream-Level Representation Of Audio-Visual Objects (1996)
We present the design of a novel syntactic and semantic framework to describe the bitstream-level representation of audio-visual information objects. This framework is important for emerging...
Spatio-Temporal Model-Assisted Compatible Coding for Low and Very Low Bitrate Videotelephony (1996)
Jae-Beom Lee, Alexandros Eleftheriadis, Ros Eleftheriadis
We introduce the concept of Spatio-Temporal ModelAssisted Compatible (STMAC) coding, a technique to selectively encode areas of different importance to the human eye in terms of space and time in...
Shih-fu Chang, Ros Eleftheriadis, Dimitris Anastassiou, Stephen Jacobs, Hari Kalva, Javier Zamora
This paper reports our progress in developing an advanced video-on-demand (VoD) testbed, which will be used to accommodate various multimedia research and applications such as Electronic News on...
Constrained And General Dynamic Rate Shaping Of Compressed Digital Video (1995)
Alexandros Eleftheriadis, Ros Eleftheriadis, Dimitris Anastassiou
We introduce the concept of Dynamic Rate Shaping, a technique to adapt the rate of compressed video bitstreams (MPEG-1, MPEG-2, H.261, as well as JPEG) to dynamically varying bit rate constraints....
Address Management and Connection Control for Multicast Communication Applications (1995)
Alexandros Eleftheriadis, Ros Eleftheriadis, Sassan Pejhan, Dimitris Anastassiou
An architecture and associated protocols are presented for managing multicast addresses and performing connection control for applications that use multicast communication facilities. A scheme to...
Meeting Arbitrary QoS Constraints Using Dynamic Rate Shaping of Coded Digital Video (1995)
Alexandros Eleftheriadis, Ros Eleftheriadis, Dimitris Anastassiou
. We introduce the concept of Dynamic Rate Shaping, a technique to adapt the rate of compressed video bitstreams (MPEG-1, MPEG2, H.261, as well as JPEG) to dynamically varying rate (and delay)...
Meeting Arbitrary QoS Constraints Using Dynamic Rate Shaping of Coded Digital Video (1995)
Alexandros Eleftheriadis, Ros Eleftheriadis, Dimitris Anastassiou
. We introduce the concept of Dynamic Rate Shaping, a technique to adapt the rate of compressed video bitstreams (MPEG-1, MPEG2, H.261, as well as JPEG) to dynamically varying rate (and delay)...
Automatic Location Tracking of Faces and Facial Features in Video Sequences (1995)
Arnaud Jacquin, Alexandros Eleftheriadis, Ros Eleftheriadis
The work reported in this paper addresses the issue of automatically tracking the faces and facial features of persons in head-and-shoulders video sequences. We propose two totally automatic...
Dynamic Rate Shaping of Compressed Digital Video (1995)
Ros Eleftheriadis, Pankaj Batra
We discuss new theoretical and experimental results on the Dynamic Rate Shaping (DRS) approach for transcoding compressed video bitstreams (MPEG-1, MPEG-2, MPEG-4, H.261 as well as JPEG). A set of...
Meeting arbitrary QOS constraints using dynamic rate shaping of coded digital video (1995)
Ros Eleftheriadis, Dimitris Anastassiou
Abstract. We introduce the concept of Dynamic Rate Shaping, a technique to adapt the rate of compressed video bitstreams (MPEG-1, MPEG-2, H.261, as well as JPEG) to dynamically varying rate (and...
Distributed multicast address management in the global internet (1995)
Sassan Pejhan, Ros Eleftheriadis, Student Member, Dimitris Anastassiou, Senior Member
Abstract|We describe a distributed architecture for managing multicast addresses in the global Internet. A multicast address space partitioning scheme is proposed, based on the unicast host address...
Optimal Data Partitioning of MPEG-2 Coded Video (1994)
Ros Eleftheriadis, Dimitris Anastassiou
We analyze the problem of optimal data partitioning of MPEG-2 coded video in an operational rate-distortion context. The optimal algorithm is characterized and shown to have high complexity and...
Distributed Multicast Address Management in the Global Internet (1994)
Sassan Pejhan, Alexandros Eleftheriadis, Ros Eleftheriadis, Student Member, Dimitris Anastassiou, Senior Member
We describe a distributed architecture for managing multicast addresses in the global Internet. A multicast address space partitioning scheme is proposed, based on the unicast host address and a...
Architecture and Algorithms of the Xphone Multimedia Communication System (1994)
Alexandros Eleftheriadis, Ros Eleftheriadis, Sassan Pejhan, Dimitris Anastassiou
We describe the architecture and the algorithms used in Columbia University's "Xphone" multimedia communication system. The system assumes a "best-effort" operating system...
Optimal Data Partitioning of MPEG-2 Coded Video (1993)
Alexandros Eleftheriadis, Ros Eleftheriadis, Dimitris Anastassiou
We analyze the problem of optimal data partitioning of MPEG-2 coded video in an operational rate-distortion context. The optimal algorithm is characterized and shown to have high complexity and...
Algorithms and Performance Evaluation of the Xphone Multimedia Communication System (1993)
Alexandros Eleftheriadis, Ros Eleftheriadis, Sassan Pejhan, Dimitris Anastassiou
We describe and evaluate the performance of the algorithms used in Columbia University's "Xphone" multimedia communication system. The system assumes a "best-effort"...
Optimal Data Partitioning of MPEG-2 Coded Video (1993)
Alexandros Eleftheriadis, Ros Eleftheriadis, Dimitris Anastassiou
We analyze the problem of optimal data partitioning of MPEG-2 coded video in an operational rate-distortion context. The optimal algorithm is characterized and shown to have high complexity and...
Survey of QOS Architectures”, Multimedia Systems (1993)
Ros Eleftheriadis, Dimitris Anastassiou
xbind/xbind.html
Algorithms and Performance Evaluation of the Xphone Multimedia Communication System (1993)
Ros Eleftheriadis, Sassan Pejhan, Dimitris Anastassiou
Abstract | We describe and evaluate the performance of the algorithms used in Columbia University's \Xphone" multimedia communication system. The system assumes a \best-e ort "...
Real-Time Video on the Web using Dynamic Rate Shaping
Stephen Jacobs, Alexandros Eleftheriadis, Ros Eleftheriadis
We propose an architecture which can support video services in networks which have no Quality of Services (QoS) guarantees. We demonstrate that there is a need for such services today and also in the...