• Combining Self Training and Active Learning for Video Segmentation 

      Fathi, Alireza; Balcan, Maria Florina; Ren, Xiaofeng; Rehg, James M. (Georgia Institute of Technology, 2011-09)
      This work addresses the problem of segmenting an object of interest out of a video. We show that video object segmentation can be naturally cast as a semi-supervised learning problem and be efficiently solved using ...
    • Learning descriptive models of objects and activities from egocentric video 

      Fathi, Alireza (Georgia Institute of Technology, 2013-06-13)
      Recent advances in camera technology have made it possible to build a comfortable, wearable system which can capture the scene in front of the user throughout the day. Products based on this technology, such as GoPro and ...
    • Learning to Recognize Daily Actions using Gaze 

      Fathi, Alireza; Li, Yin; Rehg, James M. (Georgia Institute of Technology, 2012-10)
      We present a probabilistic generative model for simultaneously recognizing daily actions and predicting gaze locations in videos recorded from an egocentric camera. We focus on activities requiring eye-hand coordination ...
    • Learning to Recognize Objects in Egocentric Activities 

      Fathi, Alireza; Ren, Xiaofeng; Rehg, James M. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2011-06)
      This paper addresses the problem of learning object models from egocentric video of household activities, using extremely weak supervision. For each activity sequence, we know only the names of the objects which are ...
    • Modeling Actions through State Changes 

      Fathi, Alireza; Rehg, James M. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2013-06)
      in this paper we present a model of action based on the change in the state of the environment. Many actions involve similar dynamics and hand-object relationships, but differ in their purpose and meaning. The key to ...
    • Social Interactions: A First-Person Perspective 

      Fathi, Alireza; Hodgins, Jessica K.; Rehg, James M. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2012-06)
      This paper presents a method for the detection and recognition of social interactions in a day-long first-person video of a social event, like a trip to an amusement park. The location and orientation of faces are ...
    • Understanding Egocentric Activities 

      Fathi, Alireza; Farhadi, Ali; Rehg, James M. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2011-11)
      We present a method to analyze daily activities, such as meal preparation, using video from an egocentric camera. Our method performs inference about activities, actions, hands, and objects. Daily activities are a ...