Work place: Department of Computer Science, The University of Alabama, Tuscaloosa, Tuscaloosa, AL 35487, USA
E-mail: robello2@crimson.ua.edu
Website: https://orcid.org/0000-0002-7994-6522
Research Interests:
Biography
Ridwan O. Bello is currently pursuing a Ph.D. in Computer Science at The University of Alabama, Tuscaloosa, USA. He received his B.Sc. in Computer Science from Fountain University, Osogbo, Nigeria, in 2017, and his M.Sc. in Computer Science from the University of Ibadan, Nigeria, in 2022. His research interests include Computer Vision, Affective Computing, and Speech Recognition, with a focus on developing efficient AI systems for low-resource communities in Africa.
By Ridwan O. Bello Joseph D. Akinyemi Khadijat T. Ladoja Oladeji P. Akomolafe
DOI: https://doi.org/10.5815/ijem.2025.01.01, Pub. Date: 8 Feb. 2025
Despite extensive research efforts in Facial Expression Recognition (FER), achieving consistent performance across diverse datasets remains challenging. This challenge stems from variations in imaging conditions such as head pose, illumination, and background, as well as demographic factors like age, gender, and ethnicity. This paper introduces NIFER, a novel facial expression database designed to address this issue by enhancing racial diversity in existing datasets. NIFER comprises 3,481 images primarily featuring individuals with dark skin tones, collected in real-world settings. These images underwent preprocessing through face detection and histogram equalization before being categorized into five basic facial expressions using a deep learning model. Experiments conducted on both NIFER and FER-2013 datasets revealed a decrease in performance in multiracial FER compared to single-race FER, underscoring the importance of incorporating diverse racial representations in FER datasets to ensure accurate recognition across various ethnicities.
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