Recognition of vision-based activities of daily living using linear predictive coding of histogram of directional derivative

Abstract

In this paper, we have introduced a novel approach for recognition of activities of daily living (ADL). These activities are the ones that the human beings perform in daily life. At the object level, we used computational color model for efficient object segmentation and tracking to handle dynamic background change in indoor environment. To make it computationally efficient, cosine of the angle between the expected image color vector and current image color vector is used. At feature level, we have presented a linear predictive coding of histogram of directional derivative as a spatio-temporal descriptor. Our proposed descriptor describes the local object shape and appearance within cuboids effectively and distinctively. A multiclass support vector machine has been used to classify the human activities. The proposed framework for recognition of indoor human activity has been extensively validated on the benchmark of ADL datasets, with a focus that this methodology is robust and attains more precise human activity recognition rate as compared to current methodologies available.