Impact Factor (2025): 6.9
DOI Prefix: 10.47001/IRJIET
Facial
Expression Recognition (FER) is a critical area of research in computer vision
and human-computer interaction. This paper presents a comprehensive study on
the use of Histogram of Oriented Gradients (HOG) and machine learning
algorithms for FER. We explore the effectiveness of HOG features in capturing
facial expressions and evaluate the performance of various machine learning
classifiers, including Support Vector Machines (SVM), Random Forests, and
Neural Networks, in recognizing facial expressions. Our experiments are
conducted on widely used JAFFE dataset. The results demonstrate that HOG
features, when combined with SVM, achieve high accuracy in recognizing facial
expressions, outperforming other feature extraction methods. This paper also
discusses the challenges and future directions in FER systems, emphasizing the
need for robust feature extraction and classification techniques in managing
high-dimensional feature spaces and its appropriateness for facial expression
recognition tasks. Note that SVM was used and we obtained results of 86%, and
we used RF and obtained results of 81%. Future studies may focus on combining
deep learning methods with hybrid feature extraction methods to improve
performance on more complex datasets.
Country : Iraq
IRJIET, Volume 9, Issue 5, May 2025 pp. 457-465