A Real-time Production Tool for Animated Hand Sketches

In recent years, the look of hand-drawn sketches has become fashionable in video production. This paper introduces a software tool to produce corresponding videos in real time during lectures, presentations, or in the studio. Currently, two styles are available. In the first style, a hand seems to draw on a whiteboard. In the second style, the presenter seems to stand behind a transparent board, which is simulated with the help of a camera. In both cases, the input stems from a standard graphics tablet. The image of the lecturer´s arm is synthesized from photographs and animated through inverse kinematics, the sounds of the pen and the eraser are synthesized from recordings. Auxiliary functions include a ghosted script for the presenter and drag drop of graphical elements prepared in advance.