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Comprehensive Representation and Efficient Extraction of Spatial Information for Human Activity Recognition from Video Data

  • Shobhanjana KalitaEmail author
  • Arindam Karmakar
  • Shyamanta M. Hazarika
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 460)

Abstract

Of late, human activity recognition (HAR) in video has generated much interest. A fundamental step is to develop a computational representation of interactions. Human body is often abstracted using minimum bounding rectangles (MBRs) and approximated as a set of MBRs corresponding to different body parts. Such approximations assume each MBR as an independent entity. This defeats the idea that these are parts of the whole body. A representation schema for interaction between entities, each of which is considered as set of related rectangles or what is referred to as extended objects holds promise. We propose an efficient representation schema for extended objects together with a simple recursive algorithm to extract spatial information. We evaluate our approach and demonstrate that, for HAR, the spatial information thus extracted leads to better models compared to CORE9 [1] a compact and comprehensive representation schema for video understanding.

Keywords

Latent Dirichlet Allocation Component Relation Human Activity Recognition Extended Object Partially Overlap 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Singapore 2017

Authors and Affiliations

  • Shobhanjana Kalita
    • 1
    Email author
  • Arindam Karmakar
    • 1
  • Shyamanta M. Hazarika
    • 1
  1. 1.Biomimetic and Cognitive Robotics LabComputer Science and Engineering, Tezpur UniversityTezpurIndia

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