<unk>  refers to the process by which an agent (such as a human being) visually takes in and interprets<unk> s that it typically encounters in<unk>  modes of operation (e.g. busy streets, meadows, living rooms). This process has been modeled in several different ways that are guided by different concepts.
Natural scene perception
Visual object recognition 
Sensory design
Visual perception
Visuospatial function
Memory span
Visual processing
Affective sensation