4.1.3 DATA Once we have the needed data, we must map it to the visual domain ° Mapping function D dataset Dy: dataset of visual features Comparison about mapping and rendering Mapping: convert invisible"to visible" representations; Rendering: simulates the physical process of lighting a visible 3D scene4.1.3 MAPPING DATA • Once we have the needed data, we must map it to the visual domain. • Mapping function D: dataset Dv: dataset of visual features • Comparison about mapping and rendering • Mapping: convert “invisible” to “visible” representations; • Rendering: simulates the physical process of lighting a “visible” 3D scene. Map : D D → V