An integration of deep learning models for effective classification of human activity patterns in disabled people using gesture analysis

Human activity recognition (HAR) has numerous applications due to its widespread use of procurement tools, such as smartphones and video cameras, and its ability to capture data on human activity. HAR became a hot scientific area in the computer vision (CV) domain. It is complicated in the expansion of many substantial applications, namely video surveillance, home monitoring, security, virtual reality, and human-computer interaction. Subsequently, a wide range of activity recognition methods were developed for individuals with disabilities. HAR is identified as the technique of naming and recognizing actions using artificial intelligence (AI)-based deep learning (DL) methodologies. DL models are crucial to the activity recognition process for individuals with disabilities and older people. This paper presents an Optimised Hybrid Deep Learning Model for Human Activity Recognition Using Metaheuristic Optimisation Algorithms (OHDLM-HARMOA) model. The aim is to develop an effective HAR method that assists and improves the quality of life for people with disabilities through accurate activity monitoring. Initially, the data pre-processing stage applies Z-score normalization for converting the input data into a structured pattern. For the feature selection process, the ant colony optimization (ACO) model is employed to select the most relevant and significant features from a dataset. Furthermore, the OHDLM-HARMOA model utilizes the hybridization of a convolutional neural network and a bidirectional gated recurrent unit with attention (CNN-BiGRU-A) technique for classification. Finally, the parameter tuning process is performed using the Sine-Cosine Algorithm (SCA) technique to enhance the classification performance of the CNN-BiGRU-A model. The experimental evaluation of the OHDLM-HARMOA approach is performed under the WISDM dataset. The comparison analysis of the OHDLM-HARMOA approach demonstrated a superior accuracy value of 99.00% over existing models.