Quick answer: Content-Aware Fill workspace in Photoshop
A bit more: there are many features in Photoshop relying on the Content Awarealgorithms. There's a Quick Healing tool, a Healing Brush, a Patch tool, a Move tool, a special Content Aware Fill menu command, and a Content Aware options with the regular Fill commands.
It would be too much to discuss them all, and there are many online (Adobe) Helpresources to be found about each of them.
But they all share the capability of filling a spot, or a gap, or a patch, anything, by automatically 1. carefully analysing the edge of the affected area and its direct environment, 2. retrieving replacing parts in the rest of the whole image, and 3.stitching them seamlessly into the spot, gap, or patch.
E.g. the Quick Healing tool is a one-click action, perfect for small blemishes or simple parts. The Healing Brush requires the sampling of a reference point, to carefully overlay and mix colors, tints, and structures from one location to another, in a aware manner. Etcetera.
Oorspronkelijk geplaatst op Quora: What is the content aware fill tool in Photoshop?"