The perception of colour takes place in the human eye and associated part of the brain. Colour perception concerns our ability to identify and distinguish colours, which in turn enables us to identify and distinguish entities in the real world. It is not completely known how human vision works, or what exactly happens in the eyes and brain before someone decides that an object is, for example, dark blue. Some theoretical models, supported by experimental results, are generally accepted, however. Colour perception theory is applied whenever colours are reproduced, for example in colour photography, TV broadcasting, printing and computer animation.
Human vision goes a step beyond the perception of colour: it deals with the ability of a person to draw conclusions from visual observations. When analysing an image, typically you find yourself somewhere between the following two processes: direct and spontaneous recognition; and logical inference, using clues to draw conclusions by a process of reasoning.