Real-time Brightness, Contrast and The Volume Control with Hand Gesture Using Open CV Python
N. Parimala, Kotha Konda Sai Teja, Jay Kumar, Gunda Keerthana, Kudupudi Meghana, R. Pitchai · 2024
Gesture-based control systems have drawn a lot of interest in this age of touchless technology and human-computer connection. This paper proposes a revolutionary method that uses the OpenCV computer vision library and Python to alter the volume, contrast, and brightness of the screen in real time using hand gestures. The system uses a webcam to record video in real time, and it makes use of OpenCV’s image processing features to identify and interpret hand motions. The suggested system focuses on identifying particular hand motions connected to orders for brightness control. With natural hand movements, users may adjust the screen brightness, contrast, or volume thanks to the system’s tracking of hand movements and recognition of predetermined gestures. In cases where manual control is impractical or inconvenient, this research attempts to provide a hands-free, user-friendly interface for managing screen brightness in addition to supporting constancy and volume. A Python program that enables users to effortlessly interact with their computer screens by just waving in front of the webcam serves as an example of the implementation., In order to separate the user’s hand from the background, contour detection and background subtraction techniques are used in hand detection. A predetermined set of hand gestures, such as swiping up or down or moving in a circle, are recognized once the hand has been identified and used to communicate the desired brightness change contrast. The user is then able to regulate the brightness and volume in a natural and intuitive way by mapping the identified motions to matching brightness adjustments. Any device with variable volume and brightness, such as a lamp or linked display, can benefit from these adjustments. This project intends to provide a hands-free, gesture-based interface to improve user engagement with digital displays and gadgets. It is an innovative and useful addition to the realm of computer vision and user interface design, with potential applications in human-computer interaction, home automation, and accessibility.