Bilkent University
Department of Computer Engineering


A Depth Perception Aware Pen-Based 3D Sketching System


Cansın Yıldız
MSc Student
Computer Engineering Department
Bilkent University

This thesis proposes a method that resembles a natural pen and paper interface to create curve based 3D sketches. The system is particularly useful for rep- resenting initial 3D design ideas without much effort. Users interact with the system by the help of a pressure sensitive pen tablet, and a webcam. The input strokes of the users are projected onto a drawing plane, which serves as a paper that they can place anywhere in the 3D scene. The resulting 3D sketch is visu- alized emphasizing depth perception by implementing several monocular depth cues, including motion parallax performed by tracking user's head position. Our evaluation involving several naive users suggest that the system is suitable for a broad range of users to easily express their ideas in 3D. We further analyze the system with the help of an architect to demonstrate the expressive capabilities of the system that a professional can benefit.


DATE: 07 June, 2012, Thursday @ 11:40