Paper in ISWC 2015: “Predicting Daily Activities from Egocentric Images Using Deep Learning”

Paper

  • D. Castro, S. Hickson, V. Bettadapura, E. Thomaz, G. Abowd, H. Christensen, and I. Essa (2015), “Predicting Daily Activities from Egocentric Images Using Deep Learning,” in Proceedings of International Symposium on Wearable Computers (ISWC), 2015. [PDF] [WEBSITE] [arXiv] [BIBTEX]
    @InProceedings{    2015-Castro-PDAFEIUDL,
      arxiv    = {http://arxiv.org/abs/1510.01576},
      author  = {Daniel Castro and Steven Hickson and Vinay
          Bettadapura and Edison Thomaz and Gregory Abowd and
          Henrik Christensen and Irfan Essa},
      booktitle  = {Proceedings of International Symposium on Wearable
          Computers (ISWC)},
      month    = {September},
      pdf    = {http://www.cc.gatech.edu/~irfan/p/2015-Castro-PDAFEIUDL.pdf},
      title    = {Predicting Daily Activities from Egocentric Images
          Using Deep Learning},
      url    = {http://www.cc.gatech.edu/cpl/projects/dailyactivities/},
      year    = {2015}
    }

Abstract

Castro-ISWC2015We present a method to analyze images taken from a passive egocentric wearable camera along with the contextual information, such as time and day of a week, to learn and predict everyday activities of an individual. We collected a dataset of 40,103 egocentric images over a 6 month period with 19 activity classes and demonstrate the benefit of state-of-the-art deep learning techniques for learning and predicting daily activities. Classification is conducted using a Convolutional Neural Network (CNN) with a classification method we introduce called a late fusion ensemble. This late fusion ensemble incorporates relevant contextual information and increases our classification accuracy. Our technique achieves an overall accuracy of 83.07% in predicting a person’s activity across the 19 activity classes. We also demonstrate some promising results from two additional users by fine-tuning the classifier with one day of training data.

Tags: , , , , , , , , | Categories: Activity Recognition, Daniel Castro, Gregory Abowd, Henrik Christensen, ISWC, Machine Learning, Papers, Steven Hickson, Ubiquitous Computing, Vinay Bettadapura | Date: September 7th, 2015 | By: Irfan Essa |

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