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...
1 Flavor: A Language for Media Representation (2007)
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...
Shih-fu Chang, Alexandros 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....
Flavor: A Language for Media Representation (2003)
Eleftheriadis, Alexandros, Hong, Danny
Flavor (Formal Language for Audio-Visual Object Representation) has been created as a language for describing coded multimedia bitstreams in a formal way so that the code for reading and writing...
Archive Description Scheme (1999)
Seungyup Paek, Ana B. Benitez, Shih-fu Chang, Alexandros Eleftheriadis, Atul Puri, Qian Huang, ...
1. Which media has your DS been developed for and/or applied to?
MPEG-4 Systems and Applications (1999)
Hari Kalva, Lai-tee Cheok, Alexandros Eleftheriadis
MPEG-4, under the auspices of the ISO, is specifying tools to enable object-based audio-visual presentations [3]. These include tools to encode individual objects, compose presentations with
Multimedia, Multipoint Communications. (1998)
Schwartz, Mischa, Anastassiou, Dimitris, Eleftheriadis, Alexandros
This research project focused on two parallel, complementary research activities designed to address potential problems arising in the transmission of multimedia traffic to multiple parties over both...
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)
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...
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...
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...
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,...
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...
Dynamic rate shaping of compressed digital video /--Alexandros Eleftheriadis. (1995)
Department: Electrical Engineering.
Architecting Video-on-Demand Systems (1995)
The culmination and convergence of several different technologies, including video compression and networking, are today making possible the design (and soon the deployment) of commercial interactive...
Low bit rate model-assisted H.261-compatible coding of video (1995)
Alexandros Eleftheriadis, Arnaud Jacquin
We describe a method of object-selective quantizer control in a standard coding system based on MC DCT---CCITT Recommendation H.261. The approach is based on two novel algorithms, namely buffer rate...
Meeting QoS Challenges for Scalable Video Flows in Multimedia Networking (1995)
Cristina Aurrecoechea, Andrew Campbell, Alexandros Eleftheriadis
Many distributed audio and video applications exhibit robustness in adapting to fluctuations in the delivered quality of service (QoS). By trading off temporal and spatial quality to available...
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...
Architecting Video-on-Demand Systems: DAVIC 1.0 and beyond (1995)
INTRODUCTION The culmination and convergence of several different technologies, including video compression and networking, are today making possible the design (and soon the deployment) of...
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...
ABSTRACT Dynamic Rate Shaping of Compressed Digital Video (1995)
Alexandros Eleftheriadis, Alexandros Eleftheriadis
We introduce the concept of Dynamic Rate Shaping (DRS), a technique to adapt the rate of compressed video bitstreams (e.g., MPEG-1, MPEG-2, H.261, JPEG) to dynamically varying rate constraints by...
Low bit rate model-assisted H.261-compatible coding of video (1995)
We describe a method of object-selective quantizer control in a standard coding system based on MC DCT| CCITT Recommendation H.261. The approach is based on two novel algorithms, namely bu er rate...
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...
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...