anbananthan pillai, N. Sazali, Arigela Satya Veerendra, and Kumaran Kadirgama, “Facial Emotion Recognition Methods, Applications and Future Challenges”, IJIE, vol. 18, no. 4, pp. 22–39, Jun. 2026, Accessed: Jul. 22, 2026. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/23370