A new approach combining CNN, RNN, and an improved Otsu threshold method for detecting hand gestures in people with thumb finger size problems and hand tremors

AIP Advances, Journal Year: 2025, Volume and Issue: 15(3)

Published: March 1, 2025

The recognition of hand gestures involves the application mathematical algorithms to detect human movements, with diverse applications in communication for hearing impaired, human–computer interaction, autonomous driving, and virtual environments. This research presents a comprehensive approach identifying dynamic gestures, which is particularly beneficial individuals finger disabilities. In addition, those tremors may encounter challenges when using interaction devices. proposed technique enhances sensitivity these devices through an advanced Otsu segmentation method. It begins by isolating from complex backgrounds this sophisticated algorithm incorporates motion data derived RGB video sequences. are then transformed into texture contour characteristics, subsequently input hybrid architecture that combines convolutional neural network (CNN) recurrent (RNN). Our findings demonstrate method achieves superior results existing alternatives can joint interactions high sensitivity. When comparing traditional our method, indicate improvement 6.3% accuracy CNN RNN classifiers. performance novel has been evaluated compared metrics, yielding significant results.

Language: Английский

High Strength and Toughness Epoxy Nanocomposites Reinforced With Epoxy‐Terminated Hyperbranched Polymer

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

ABSTRACT Epoxy composites reinforced and toughened with an epoxy‐terminated hyperbranched polymer (ETHP) were successfully synthesized. The ETHP was derived from a bio‐based epoxy resin, its structure confirmed using nuclear magnetic resonance (NMR) spectroscopy Fourier transform infrared (FTIR) spectroscopy. influence of content on the mechanical thermophysical properties systematically investigated. exhibited initial increase followed by decline increasing loading. 7.5 wt% ETHP/epoxy composite demonstrated optimal performance, tensile strength 91.7 MPa, elongation at break 6.7%, flexural 145 MPa. Compared to cured polymer, they represented increases 30.6%, 34.3%, 38.1%, respectively. glass transition temperature (Tg) also first then decreases. A maximum Tg is obtained when 5 wt%. It shifted 174.9°C 158.6°C pure polymer. excellent overall performance not only broadens potential applications resins but provides novel approach for toughening other resin systems.

Language: Английский