Mr. Henry Tan Profile

Henry Tan

at National Univ of Singapore

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Proceedings Article | 23 June 2003 Paper

Human activities recognition by head movement using partial recurrent neural network

Henry Tan, Kui Jia, Liyanage De Silva

Proceedings Volume 5150, (2003) https://doi.org/10.1117/12.503257

KEYWORDS: Head, Neural networks, Image segmentation, Databases, Data modeling, Feature extraction, Video, Neurons, Pattern recognition, Statistical modeling

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Traditionally, human activities recognition has been achieved mainly by the statistical pattern recognition methods or the Hidden Markov Model (HMM). In this paper, we propose a novel use of the connectionist approach for the recognition of ten simple human activities: walking, sitting down, getting up, squatting down and standing up, in both lateral and frontal views, in an office environment. By means of tracking the head movement of the subjects over consecutive frames from a database of different color image sequences, and incorporating the Elman model of the partial recurrent neural network (RNN) that learns the sequential patterns of relative change of the head location in the images, the proposed system is able to robustly classify all the ten activities performed by unseen subjects from both sexes, of different race and physique, with a recognition rate as high as 92.5%. This demonstrates the potential of employing partial RNN to recognize complex activities in the increasingly popular human-activities-based applications.

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