Abstract
Freehand line drawings are used effectively for telling our ideas and visual images. A freehand perspective line drawing is usually completed shorter time period than that by 3D CAD and easy to redraw. However, it is hard to get freehand perspective line drawings which are looked from different points of view while it is easy for 3D CAD. So, we propose an interactive editing method to change a point of view for perspective line drawings using vanishing point detection and perspective transform.
