Rapid visualization
Rapid visualization is a technique used by graphic artists to create a drawing of a concept in several stages. After the completion of thumbnail drawings, a preferred drawing is selected and rendered in full size, usually in pencil. Then a sheet of paper is put over the drawing and it is redrawn/traced with corrections, additions, and alterations. This process is repeated several times, often with color added at some stage, until the image is perfected to the desire of the artist.
The purpose of rapid vis is to take an idea from concept to accurate rendering without having to start over from scratch each time an edit or alteration is desired. The completed drawing is usually still considered a rough layout or comprehensive for approval submission.
