KESHAV DEV GUPTA, J. S. A FACE DETECTION AND RECOGNITION PROCESSING WITH LIGHTING INVARIANCE CONDITION. International Journal of Engineering Technology and Computer Research, [S. l.], v. 2, n. 4, 2014. Disponível em: https://www.ijetcr.org/index.php/ijetcr/article/view/25. Acesso em: 20 aug. 2026.