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Significant Trajectories and Locality Constrained Linear Coding for Hand Gesture Representation

Authors: Thanh-Hai Tran; Tien Hai Nguyen; Viet Sang Dinh;

Significant Trajectories and Locality Constrained Linear Coding for Hand Gesture Representation

Abstract

Recently, action recognition gains a lot of attention of researchers thank to its potential applications in real life. Particularly, hand gestures, which are actions performed by human hand, have been widely studied and started to be deployed as an efficient mean of human machine interaction (HMI). In this paper, we focus on hand gestures recognition in the context of HMI which requires to balance the trade-off between recognition accuracy and computation time. While convolutional neural network (CNN) has been shown to be very effective in many tasks, it requires powerful computer and huge training data which are not always available in common use. In this paper, we study a method based on hand crafted features (i.e. dense trajectories for hand gesture representation). We then select the most significant trajectories and compute a descriptor for each of them. For final representation of a gesture, we utilize locality constrained linear coding (LLC) and compare it with Bag of Words (BoW0 model. Finally, Support Vector Machine (SVM) is deployed to classify gestures. We test the proposed method on a dataset of hand gestures captured from different viewpoints and study the impact of viewpoint changes on such dataset. Experiments show that the proposed method keeps a balance between accuracy and computational time and comparable with CNN based method.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
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