International Journal of Engineering and Technology

Facial expression recognition extends in various real world scenario that includes safety, scientific and many commercial applications. Face detection through edge detection is focussed in this research before recognizing facial expressions. Hence, in this paper, an improved sobel operator is employed. The improved sobel operator makes use of geodesic distance. To identify the position of edge, the minimum distance between the image and the elements of features with the help of geodesic distance are used. After that, an enhanced fast fourier transform (E-FFT) is employed for face detection. Performance metrics such as time taken for edge detection, time taken for face detection and accuracy are taken into account. From the results it is evident that the proposed work consumes less time for edge detection and face detection. Also it is noteworthy that the accuracy is improved significantly.