Digital Image Enhancement

Image enhancement refers to the process of highlighting certain information of an image, as well as weakening or removing any unnecessary information according to specific needs. For example, eliminating noise, revealing blurred details, and adjusting levels to highlight features of an image.Image enhancement techniques can be divided into two broad categories:Spatial domain — enhancement the image space that divides an image into uniform pixels according to the spatial coordinates with a certain resolution. The spatial domain methods perform operations on pixels directlyFrequency domain — enhancement obtained by applying the Fourier Transform to the spatial domain. In the frequency domain, pixels are operated in groups as well as indirectly.