picture plane

In drawing, the picture plane is an imaginary transparent surface that stands between the viewer and the scene being depicted. Think of it as the canvas or paper itself, perpendicular to the viewer's line of sight. When creating a drawing using linear perspective, artists project points from the objects in the scene onto this picture plane. This technique helps create the illusion of three-dimensional space on a two-dimensional surface, making objects appear to recede into the distance and parallel lines converge. The ground plane, in contrast, is the horizontal surface on which objects are typically placed in a perspective drawing.1234