Multimedia Technology and Telecommunications Lab


Hand Gesture Recognition




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Depth data acquired by current low-cost real-time depth cameras provide a more informative description of the hand pose that can be exploited for gesture recognition purposes. Following this rationale, we proposed a novel hand gesture recognition scheme based on depth information.

The basic framework [1,2] is the following. Color and depth data are firstly used together to extract the hand and divide it into palm and finger regions. Then different sets of feature descriptors are extracted accounting for different clues like the distances of the fingertips from the hand center, the curvature of the hand contour or the geometry of the palm region. Finally a multi-class SVM classifier is employed to recognize the performed gestures. Experimental results demonstrate the ability of the proposed scheme to achieve a very high accuracy on both standard datasets and on more complex ones acquired for experimental evaluation. The current implementation is also able to run in real-time.

 

We have also proposed several other solutions, including variations of the original approach, novel schemes and schemes based on different sensors:

  • In [3] an improved version of the palm detection scheme is proposed.

  • Different machine learning schemes are proposed in [4]  to improve the recognition accuracy

  • Color-based descriptor are combined with the depth-based ones in [5]

  • A review of several feature extraction schemes is presented in [6]

  • The use of a Leap Motion sensor together with a depth sensor is discussed in [7,8]

  • In a different approach [9] the curvature of the hand shape is used to separate the palm from the fingers. Then density-based clustering is used together with a linear programming approach to separate the various fingers

  • The approach of [10], targeted to real-time ego vision systems, exploits descriptors based on the hand silhouette, in particular the curvature of the contour and features based on the distance transform.  Synthetic data obtained by an ad-hoc library made available on this website has been used for the training stage.

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Related Papers:

     [1] F. Dominio, M. Donadeo, P. Zanuttigh
-------- "Combining multiple depth-based descriptors for hand gesture recognition"
-------- Pattern Recognition Letters,
           vol. 50, pp. 101-111, 2014
--------[ Dataset Page ]

----[2] F. Dominio, M. Donadeo, G. Marin, P. Zanuttigh, G.M. Cortelazzo,
-------- "Hand Gesture Recognition with Depth Data"
-------- ACM Multimedia Artemis workshop, 2013
           Barcelona, Spain, October 2013.
-------- [ Dataset Page ] [ Presentation

    [3] G. Marin, M. Fraccaro, M. Donadeo, F. Dominio, P. Zanuttigh,
         "
Palm area detection for reliable hand gesture recognition"
          Proceedings of MMSP 2013
--------Pula, Italy, October 2013.

   [4] L. Nanni, A. Lumini, F. Dominio, M. Donadeo and P. Zanuttigh,
         "
Ensemble to improve gesture recognition",
          to appear on International Journal of Automated Identification Technology

   [5] L. Nanni, A. Lumini, F. Dominio, M. Donadeo and P. Zanuttigh,
         "Improved Feature Extraction and Ensemble Learning for Gesture Recognition"
          to appear in Advances in Machine Learning Research, Nova Science Publishers, 2014

   [6]  Fabio Dominio, Giulio Marin, Mauro Piazza, Pietro Zanuttigh,
          "
Feature Descriptors for Depth-Based Hand Gesture Recognition",
           In "Computer Vision and Machine Learning with RGB-D Sensors",
           pp 215-23, Springer International Publishing, 2014

    [7] G. Marin, F. Dominio, P. Zanuttigh,
           "
Hand gesture recognition with Leap Motion and Kinect devices," 
           IEEE International Conference on Image Processing (ICIP),
           pp.1565-1569, Paris, France, Oct. 2014
           [
Dataset Page ]
-------

    [8] G. Marin, F. Dominio, P. Zanuttigh,
           "Hand Gesture Recognition with Jointly Calibrated Leap Motion and Depth Sensor," 
           Multimedia Tools and Applications, 2015
           [
Dataset Page ] ---
----

    [9]  L. Minto, G. Marin, P. Zanuttigh,
           "3D Hand Shape Analysis for Palm and Fingers Identification," 
           International Workshop on Understanding Human Activities through 3D Sensors (FG2015 Workshop),  Ljubljana , Slovenia, May, 2015

   [10]  A.Memo, L. Minto, P. Zanuttigh,
           "
Exploiting Silhouette Descriptors and Synthetic Data for Hand Gesture Recognition," 
          
Smart Tools and Apps in computer Graphics, Verona, October 15,16 2015
           [ Dataset Page ] -[ Synthetic rendering library ] -


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