A Compound Eigenspace for Recognizing Directed Human Activities

  • Abdunnaser Diaf
  • Boubakeur Boufama
  • Rachid Benlamri
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7325)


This paper proposes a robust appearance-based method for recognizing directed human activities with scale variation based on a compound eigenspace. The method addresses two main issues associated with activity recognition when a human is moving away from or closer to the cameras. The first issue is the variation in human silhouette sizes as a result of object-camera distance changes. The second is the insufficient information of shape and speed of the limbs due to self occlusions. An eigenvector-based linear algorithm is employed for dimensionality reduction and activity recognition here. In addition to the conventional data available in each video frame, our method extracts two more pieces of information that are used to control the recognition process. In particular, the use of a compound eigenspace, controlled by the silhouette’s relative speed and linear displacement vector, has clearly improved the recognition. The method has been trained and tested using the four scenarios of the KTH dataset, which contains hundreds of videos partitioned into six human activities.


Human Activity Recognition Eigenspace Motion Intensity Image 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Abdunnaser Diaf
    • 1
  • Boubakeur Boufama
    • 1
  • Rachid Benlamri
    • 2
  1. 1.University of WindsorWindsorCanada
  2. 2.Lakehead UniversityThunder BayCanada

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