Bala Shanmukha Sowmya Javvadhi, and D.V. Manjula. “Preprocessing and Augmentation Techniques to Improve Hand Gesture Recognition Accuracy”. Journal of Image Processing and Artificial Intelligence, vol. 11, no. 3, Oct. 2025, pp. 9-21, https://matjournals.net/engineering/index.php/JOIPAI/article/view/2516.