In this paper we introduce a method to synthesize a woodblock print in a virtual world based on virtual sculpting. The proposed method is one of non-photorealistic rendering (NPR) techniques aiming at fine arts. The NPR techniques can be categorized into two strategies; (a) ABR: appearance-based rendering, and (b) PBR: physics-based rendering. Since our virtual woodblock printing follows PBR and is based on the processes of woodblock printing in the real world, generated images have high physical fidelity and good appearance. An application to produce Japanese traditional printing ‘ Ukiyo-e ’ utilizing the proposed method, and problems and future studies for the method are also introduced.

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Concepts and processing procedure are proposed to create efficiently a three-dimensional computer graphics drawn by different viewpoints for every object. We call the computer graphics as ‘multi-viewpoint picture’. A significant feature of the proposed method is high affinity with any conventional software for 3-D computer graphics work. Appearances of any objects are controlled by five parameters. A multiple-viewpoint picture is transformed continuously from a picture like ordinary perspective picture. The proposed method is a powerful and convenient tool for creating multiple-viewpoint picture.

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In this paper we present a new NPR technique to generate pastel-like computer graphics image. First of all, we generate the pastel stroke model from parameters that are extracted from 3D object. Next, for each stroke model we add pigment adhesion model that consider paper texture, the change of pressure applied to the paper according to different drawing techniques and the secondary colors resulting from overlapping strokes. After that we render these models. The generated image has pastel-like feature and at the same time all the objects can suffer any transformation. Also, changing parameters gives some other drawing effects that we want.

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In this paper, we propose a new design concept for human computer interaction named Tangible Augmented Reality. Tangible User Interface was proposed as a post-GUI interface and many researchers have showed its importance and effectiveness. We improved this concept by combining 3D display functionality in real world based on Augmented Reality technology. We show effectiveness of Tangible Augmented Reality with two prototype systems based on this concept. First one is MagicBook. User can see 3D virtual objects in real book and also fly in virtual scene. Second one is MagicPaddle. User can manipulate virtual objects by simple cardboard small paddle and make 3D virtual scene.

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