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Displaying 1-50 out of 63 total
Multi-sensor Data Fusion Using the Influence Model
Found in: Wearable and Implantable Body Sensor Networks, International Workshop on
By Wen Dong, Alex Pentland
Issue Date:April 2006
pp. 72-75
System robustness against individual sensor failures is an important concern in multi-sensor networks. Unfortunately, the complexity of using the remaining sensors to interpolate missing sensor data grows exponentially due to the
 
Evolution of Social Encounters in Ad-Hoc Mobile Face-to-Face Interaction Networks
Found in: 2012 International Conference on Social Informatics (SocialInformatics)
By Rahman O. Oloritun,Anmol Madan,Alex Pentland,Inas Khayal
Issue Date:December 2012
pp. 192-198
Several studies have suggested that propinquity, social, physical and psychological similarities are the major social processes required for the evolution social ties. This study attempts to understand the effect of these social processes on the creation o...
 
Stealing Reality: When Criminals Become Data Scientists (or Vice Versa)
Found in: IEEE Intelligent Systems
By Yaniv Altshuler,Nadav Aharony,Alex Pentland,Yuval Elovici,Manuel Cebrian
Issue Date:November 2011
pp. 22-30
Stealing-reality attacks attempt to steal social network and behavioral information through data collection and inference techniques, making them more dangerous than other types of identity theft.
 
VibeFones: Socially Aware Mobile Phones
Found in: Wearable Computers, IEEE International Symposium
By Anmol Madan, Alex Pentland
Issue Date:October 2006
pp. 109-112
Today's mobile phones are essentially off-the-shelf, mass-market wearable computers. In this paper, we describe mobile social software that uses tone of voice, location and proximity information to create a sophisticated understanding of people's social li...
 
A Computational Model of Social Signalin
Found in: Pattern Recognition, International Conference on
By Alex Pentland
Issue Date:August 2006
pp. 1080-1083
I have proposed that unconscious voice, face, hand, and body gestures form a motion texture that convey social signals, and that these signals are an important determinant of human behavior [1]. In this paper I will describe the theoretical and computation...
 
Social Serendipity: Mobilizing Social Software
Found in: IEEE Pervasive Computing
By Nathan Eagle, Alex Pentland
Issue Date:April 2005
pp. 28-34
The Serendipity system senses a social environment and cues informal interactions between nearby users who don?t know each other, but probably should. The system uses Bluetooth hardware addresses to detect and identify proximate people and matches them fro...
 
Sensing and Modeling Human Networks using the Sociometer
Found in: Wearable Computers, IEEE International Symposium
By Tanzeem Choudhury, Alex Pentland
Issue Date:October 2003
pp. 216
Knowledge of how people interact is important in many disciplines, e.g. organizational behavior, social network analysis, information diffusion and knowledge management applications. We are developing methods to automatically and unobtrusively learn the so...
 
Boosting and Structure Learning in Dynamic Bayesian Networks for Audio-Visual Speaker Detection
Found in: Pattern Recognition, International Conference on
By Tanzeem Choudhury, James M. Rehg, Vladimir Pavlović, Alex Pentland
Issue Date:August 2002
pp. 30789
Bayesian networks are an attractive modeling tool for human sensing, as they combine an intuitive graphical representation with efficient algorithms for inference and learning. Earlier work has demonstrated that boosted parameter learning could be used to ...
 
Browsing 3-D spaces with 3-D vision: body-driven navigation through the Internet city
Found in: 3D Data Processing Visualization and Transmission, International Symposium on
By Flavia Sparacino, Christopher Wren, Ali Azarbayejani, Alex Pentland
Issue Date:June 2002
pp. 224
This paper present a computer vision stereo based interface to navigate inside a 3-D Internet city, using body gesture. A wide-baseline stereo pair of cameras is used to obtain 3-D body models of the users? hands and head in a small desk-area environment. ...
 
Statistical Imitative Learning from Perceptual Data
Found in: Development and Learning, International Conference on
By Tony Jebara, Alex Pentland
Issue Date:June 2002
pp. 191
Imitative learning has recently piqued the interest of various fields including neuroscience, cognitive science and robotics. In computational behavior modeling and development, it promises an accessible framework for rapidly forming behavior models withou...
 
Learning Your Life: Wearables and Familiars
Found in: Development and Learning, International Conference on
By Brian Clarkson, Sumit Basu, Nathan Eagle, Tanzeem Choudhury, Alex Pentland
Issue Date:June 2002
pp. 0235
The wearable platform is an important perspective from which to collect developmental data. While not an agent of its own accord, it is like the mythical
   
Bayesian Face Recognition with Deformable Image Models
Found in: Image Analysis and Processing, International Conference on
By Baback Moghaddam, Chahab Nastar, Alex Pentland
Issue Date:September 2001
pp. 0026
Abstract: We propose a novel representation for characterizing image differences using a deformable technique for obtaining pixel-wise correspondences. This representation, which is based on a deformable 3D mesh in XYI-space, is then experimentally compare...
 
Recognizing User Context via Wearable Sensors
Found in: Wearable Computers, IEEE International Symposium
By Brian Clarkson, Alex Pentland, Kenji Mase
Issue Date:October 2000
pp. 69
We describe experiments in recognizing a person's situation from only a wearable camera and microphone. The types of situations considered in these experiments are coarse locations (such as at work, in a subway or in a grocery store) and coarse events (suc...
 
Wearable Phased Arrays for Sound Localization and Enhancement
Found in: Wearable Computers, IEEE International Symposium
By Sumit Basu, Steve Schwartz, Alex Pentland
Issue Date:October 2000
pp. 103
No summary available.
 
Motion Field Histograms for Robust Modeling of Facial Expressions
Found in: Pattern Recognition, International Conference on
By Tanzeem Choudhury, Alex Pentland
Issue Date:September 2000
pp. 2929
This paper presents motion field histograms as a new way of extracting facial features and modeling expressions. Features are based on local receptive field histograms, which are robust against errors in rotation, translation and scale changes during image...
 
Looking at People: Sensing for Ubiquitous and Wearable Computing
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Alex Pentland
Issue Date:January 2000
pp. 107-119
<p><b>Abstract</b>—The research topic of <it>looking at people,</it> that is, giving machines the ability to detect, track, and identify people and more generally, to interpret human behavior, has become a central topic in mac...
 
Realtime Personal Positioning System for Wearable Computers
Found in: Wearable Computers, IEEE International Symposium
By Hisashi Aoki, Bernt Schiele, Alex Pentland
Issue Date:October 1999
pp. 37
Context awareness is an important functionality for wearable computers. In particular, the computer should know where the person is in the environment. This paper proposes an image sequence matching technique for the recognition of locations and previously...
 
Learning Audio-Visual Associations Using Mutual Information
Found in: Integration of Speech and Image Understanding, ICCV Workshop on
By Deb Roy, Bernt Schiele, Alex Pentland
Issue Date:September 1999
pp. 147
This paper addresses the problem of finding useful associations between audio and visual input signals. The proposed approach is based on the maximization of mutual information of audio-visual clusters. This approach results in segmentation of continuous s...
 
Probabilistic Object Recognition and Localization
Found in: Computer Vision, IEEE International Conference on
By Bernt Schiele, Alex Pentland
Issue Date:September 1999
pp. 177
Objects can be represented by regions of local structure as well as dependencies between these regions. The appearance of local structure can be characterized by a vector of local features measured by local operators such as Gaussian derivatives or Gabor f...
 
Bayesian Image Retrieval in Biometric Databases
Found in: Multimedia Computing and Systems, International Conference on
By Baback Moghaddam, Alex Pentland
Issue Date:June 1999
pp. 610
We demonstrate a Bayesian technique for direct visual matching of biometric images for the purposes of face recognition and retrieval, using a probabilistic measure of facial similarity. This technique differs significantly from simpler methods which are b...
 
Media Actors: Characters in Search of an Author
Found in: Multimedia Computing and Systems, International Conference on
By Flavia Sparacino, Glorianna Davenport, Alex Pentland
Issue Date:June 1999
pp. 439
Interactive experiences benefit from natural interactions, compelling communication, and ease of implementation. We show how, according to these principles, interactive media architectures can be categorized as scripted, responsive, learning, or behavioral...
 
Real-Time American Sign Language Recognition Using Desk and Wearable Computer Based Video
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Thad Starner, Joshua Weaver, Alex Pentland
Issue Date:December 1998
pp. 1371-1375
<p><b>Abstract</b>—We present two real-time hidden Markov model-based systems for recognizing sentence-level continuous American Sign Language (ASL) using a single camera to track the user's unadorned hands. The first system observes the ...
 
Visual Contextual Awareness in Wearable Computing
Found in: Wearable Computers, IEEE International Symposium
By Thad Starner, Bernt Schiele, Alex Pentland
Issue Date:October 1998
pp. 50
Small, body-mounted video cameras enable a different style of wearable computing interface. As processing power increases, a wearable computer can spend more time observing its user to provide serendipitous information, manage interruptions and tasks, and ...
 
Efficient MAP / ML Similarity Matching for Visual Recognition
Found in: Pattern Recognition, International Conference on
By Baback Moghaddam, Tony Jebara, Alex Pentland
Issue Date:August 1998
pp. 876
No summary available.
 
Smart Rooms, Smart Clothes
Found in: Pattern Recognition, International Conference on
By Alex Pentland
Issue Date:August 1998
pp. 949
No summary available.
 
Characterization of Neuropathological Shape Deformations
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By John Martin, Alex Pentland, Stan Sclaroff, Ron Kikinis
Issue Date:February 1998
pp. 97-112
<p><b>Abstract</b>—We present a framework for analyzing the shape deformation of structures within the human brain. A mathematical model is developed describing the deformation of any brain structure whose shape is affected by both gross ...
 
Mixtures of Eigenfeatures for Real-Time Structure from Texture
Found in: Computer Vision, IEEE International Conference on
By Tony Jebara, Kenneth Russell, Alex Pentland
Issue Date:January 1998
pp. 128
We describe a face modeling system which estimates complete facial structure and texture from a real-time video stream. The system begins with a face tracking algorithm which detects and stabilizes live facial images into a canonical 3D pose. The resulting...
 
Viewpoint-Invariant Indexing for Content-Based Image Retrieval
Found in: Content-Based Access of Image and Video Databases, Workshop on
By Sven Dickinson, Alex Pentland, Suzanne Stevenson
Issue Date:January 1998
pp. 20
Current methods for shape-based image retrieval are restricted to images containing 2-D objects. We propose a novel approach to querying images containing 3-D objects, based on a view-based encoding of a finite domain of 3-D parts used to model the 3-D obj...
 
Stochasticks: Augmenting the Billiards Experience with Probabilistic Vision and Wearable Computers
Found in: Wearable Computers, IEEE International Symposium
By Tony Jebara, Cyrus Eyster, Josh Weaver, Thad Starner, Alex Pentland
Issue Date:October 1997
pp. 138
We propose a practical application of wearable computing and augmented reality which enhances the game of billiards. A vision algorithm is implemented which operates in interactive-time with the user to assist planning and aiming. Probabilistic color model...
 
Tactual Displays for Wearable Computing
Found in: Wearable Computers, IEEE International Symposium
By Hong Z. Tan, Alex Pentland
Issue Date:October 1997
pp. 84
This paper provides a general overview of tactual displays (i.e., devices that communicate to a user through the sense of touch) and issues concerning the development of such displays for wearable computing. A wearable tactile directional display is presen...
 
Wearable Performance
Found in: Wearable Computers, IEEE International Symposium
By Flavia Sparacino, Alex Pentland, Glorianna Davenport
Issue Date:October 1997
pp. 181
Wearable computers offer the street performer powerful tools with which to create innovative experiences for the audience. As wearable technology moves computation from the desktop onto the user's body, it provides an invitation to free performance from th...
   
A Wearable Computer Based American Sign Language Recognizer
Found in: Wearable Computers, IEEE International Symposium
By Thad Starner, Joshua Weaver, Alex Pentland
Issue Date:October 1997
pp. 130
Modern wearable computer designs package workstation level performance in systems small enough to be worn as clothing. These machines enable technology to be brought where it is needed the most for the handicapped: everyday mobile environments. This paper ...
 
Probabilistic Visual Learning for Object Representation
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Baback Moghaddam, Alex Pentland
Issue Date:July 1997
pp. 696-710
<p><b>Abstract</b>—We present an unsupervised technique for visual learning, which is based on density estimation in high-dimensional spaces using an eigenspace decomposition. Two types of density estimates are derived for modeling the tr...
 
A Three-Dimensional Model of Human Lip Motions Trained from Video
Found in: Motion of Non-Rigid and Articulated Objects, IEEE Computer Society Workshop on
By Sumit Basu, Alex Pentland
Issue Date:July 1997
pp. 0046
We present a 3D model of human lips and develop a framework for training it from real data. The model starts off with generic physics specified with the finite element method and
 
LAFTER: Lips and Face Real-Time Tracker
Found in: Computer Vision and Pattern Recognition, IEEE Computer Society Conference on
By Nuria Oliver, Alex Pentland, Francois Berard
Issue Date:June 1997
pp. 123
This paper describes an active-camera real-time system for tracking, shape description, and classification of the human face and mouth using only an SGI Indy computer. The system is based on use of 2-D blob features, which are spatially-compact clusters of...
 
The Role of Model-Based Segmentation in the Recovery of Volumetric Parts From Range Data
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Sven J. Dickinson, Dimitri Metaxas, Alex Pentland
Issue Date:March 1997
pp. 259-267
<p><b>Abstract</b>—We present a method for segmenting and estimating the shape of 3D objects from range data. The technique uses model views, or aspects, to constrain the fitting of deformable models to range data. Based on an initial reg...
 
Modeling, Tracking and Interactive Animation of Faces and Heads Using Input from Video
Found in: Computer Animation
By Irfan Essa, Sumit Basu, Trevor Darrell, Alex Pentland
Issue Date:June 1996
pp. 68
We describe tools that use measurements from video for the extraction of facial modeling and animation parameters, head tracking, and real-time interactive facial animation. These tools share common goals but rely on varying details of physical and geometr...
 
Video and Image Semantics: Advanced Tools for Telecommunications
Found in: IEEE Multimedia
By Alex Pentland, Rosalind Picard, Glorianna Davenport, Ken Haase
Issue Date:June 1994
pp. 73-75
No summary available.
 
Technology Development for Building Flexible Silicon Functional Fibres
Found in: Wearable Computers, IEEE International Symposium
By Tanzeem Choudhury, Alex Pentland
Issue Date:October 2003
pp. 210
Most of everyday clothing consists of textile fibres woven together to produce a fabric.Their primary purpose is structural and aesthetic. Fibres can have added functionality by the integration of computing power into the material that forms them. The purp...
 
3D Modeling and Tracking of Human Lip Motions
Found in: Computer Vision, IEEE International Conference on
By Sumit Basu, Nuria Oliver, Alex Pentland
Issue Date:January 1998
pp. 337
We address the problem of tracking and reconstructing 3D human lip motions from a 2D view. This problem is challenging due both to the complex nature of lip motions and minimal data available from a raw video stream of the face. We counter both of these di...
 
Friends don't lie: inferring personality traits from social network structure
Found in: Proceedings of the 2012 ACM Conference on Ubiquitous Computing (UbiComp '12)
By Alex Pentland, Bruno Lepri, Fabio Pianesi, Jacopo Staiano, Nadav Aharony, Nicu Sebe
Issue Date:September 2012
pp. 321-330
In this work, we investigate the relationships between social network structure and personality; we assess the performances of different subsets of structural network features, and in particular those concerned with ego-networks, in predicting the Big-5 pe...
     
Joint ACM workshop on human gesture and behavior understanding: (J-HGBU'11)
Found in: Proceedings of the 19th ACM international conference on Multimedia (MM '11)
By Alberto Del Bimbo, Alessandro Vinciarelli, Alex Pentland, Maja Pantic, Mohamed Daoudi, Rita Cucchiara
Issue Date:November 2011
pp. 615-616
The ability to understand social signals of a person we are communicating with is the core of social intelligence. Social Intelligence is a facet of human intelligence that has been argued to be indispensable and perhaps the most important for success in l...
     
Honest signals: how social networks shape human behavior
Found in: Proceedings of the 19th ACM international conference on Multimedia (MM '11)
By Alex Pentland
Issue Date:November 2011
pp. 583-584
How did humans coordinate before we had sophisticated language capabilities? Pre-linguistic social species coordinate by signaling, and in particular 'honest signals' which actually cause changes in the listener. I will describe examples of human behaviors...
     
The social fMRI: measuring, understanding, and designing social mechanisms in the real world
Found in: Proceedings of the 13th international conference on Ubiquitous computing (UbiComp '11)
By Alex Pentland, Cory Ip, Inas Khayal, Nadav Aharony, Wei Pan
Issue Date:September 2011
pp. 445-454
A key challenge of data-driven social science is the gathering of high quality multi-dimensional datasets. A second challenge relates to design and execution of structured experimental interventions in-situ, in a way comparable to the reliability and inten...
     
Kith and kin: how social networks make us smart
Found in: Proceedings of the 2nd international workshop on Social signal processing (SSPW '10)
By Alex Pentland
Issue Date:October 2010
pp. 3-4
My research shows that the attitudes and actions of peers, rather than logic or argument, usually dominates people's beliefs and actions. The mechanism appears to be based on learning by example from kithmates (a set of peers relevant to the problem at han...
     
MM'10 workshop summary for SSPW: ACM workshop on social signal processing 2010
Found in: Proceedings of the international conference on Multimedia (MM '10)
By Alessandro Vinciarelli, Alex Pentland, Maja Pantic
Issue Date:October 2010
pp. 1765-1766
The Workshop on Social Signal Processing (SSPW) is the yearly event of the Social Signal Processing Network (EU-FP7 SSPNet project). This year's workshop programme consists of 4 premium Key Note Talks by Jeff Cohn, Alex Pentland. Justine Cassell, and Toyoa...
     
Social sensing for epidemiological behavior change
Found in: Proceedings of the 12th ACM international conference on Ubiquitous computing (Ubicomp '10)
By Alex Pentland, Anmol Madan, David Lazer, Manuel Cebrian
Issue Date:September 2010
pp. 291-300
An important question in behavioral epidemiology and public health is to understand how individual behavior is affected by illness and stress. Although changes in individual behavior are intertwined with contagion, epidemiologists today do not have sensing...
     
A quantitative analysis of the collective creativity in playing 20-questions games
Found in: Proceeding of the seventh ACM conference on Creativity and cognition (C&C '09)
By Alex Pentland, Taemie Kim, Wen Dong
Issue Date:October 2009
pp. 365-366
Creativity is an important ingredient in problem solving, and problem solving is an important activity for both individuals and societies. This paper discusses our novel approach of discovering the structure of problem-solving creativity with statistical m...
     
Social signal processing: state-of-the-art and future perspectives of an emerging domain
Found in: Proceeding of the 16th ACM international conference on Multimedia (MM '08)
By Alessandro Vinciarelli, Alex Pentland, Herve Bourlard, Maja Pantic
Issue Date:October 2008
pp. 40-42
The ability to understand and manage social signals of a person we are communicating with is the core of social intelligence. Social intelligence is a facet of human intelligence that has been argued to be indispensable and perhaps the most important for s...
     
Human computing and machine understanding of human behavior: a survey
Found in: Proceedings of the 8th international conference on Multimodal interfaces (ICMI '06)
By Alex Pentland, Anton Nijholt, Maja Pantic, Thomas Huang
Issue Date:November 2006
pp. 239-248
A widely accepted prediction is that computing will move to the background, weaving itself into the fabric of our everyday living spaces and projecting the human user into the foreground. If this prediction is to come true, then next generation computing, ...
     
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