Image Processing - Laboratory 9: Image filtering in the spatial and frequency domains 1 9. Image filtering in the spatial and frequency domains 9.1. Introduction In this laboratory the convolution operator will be presented. This operator is used in the linear image filtering process applied in the spatial domain (in the image plane by directly manipulating the pixels) or in the frequency.
Frequency domain filtering; Frequency domain filtering involves frequency domain transforms. These transforms change an image from its spatial-domain form of brightnesses to a frequency domain of fundamental frequency components. One of the most commonly used is the Fast Fourier Transform. When an image is transformed with Fast Fourier, and the.