Performance Evaluation of Edge Detection Techniques in Spatial and Frequency Domain
T. Shreekanth, R Shashidhar, N M Basavaraju · International Journal of Multimedia and Image Processing · 2017
This paper presents a comprehensive performance evaluation of different high pass filtering techniques for Edge detection in both time domain and frequency domain. The paper examines various kernels and compares the efficiency of the filtering technique against the computation time for various sizes of images with various sizes of high-pass filter kernels.We have made use of Sobel filter as the standard filter kernel against which other techniques are compared.The results clearly demonstrate that the implementation of edge detection in frequency domain is better in terms of computation time as compared to that of the time domain implementation.An image can be converted from spatial domain to the frequency domain and from frequency domain to the spatial domain respectively using the 2D discrete