[[Digital image processing]] is the application of [[signal processing]] techniques to the ___domain of [[image]]s — two-dimensional [[Wiktionary:signal|signal]]s such as [[photography|photographs]] or [[video]].
Image processing does typically involve '''filtering''' or '''enhancing''' an image using various types of functions in addition to other techniques to extract information from the images.
Related categories: [[:Category:Computer vision|computer vision]] and [[:Category:Imaging|imaging]].