The reflectance of fabric surface is commonly represented by a bidirectional reflectance distribution function (BRDF). To generate the image-based BRDF from measured data, it requires an enormous amount of measurements. In this paper, we propose an efficient image-based method for rendering the anisotropic BRDF of silk-like woven fabrics based on the micro facet surface geometry determined by the cross-sectional shape of fibers, twist of yarns, and type of weave. We develop an image-based method for generating the BRDF of silk-like woven fabrics from measurement of the reflectances caused by the incident light only in the direction perpendicular to the fabric's surface.

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Volumetric displays, which directly draw 3D images in the real 3D space, are expected to be used not only in science but also in art. However, most of these displays need complex and expensive optical systems, so they are rarely used in art. In this paper, we propose and describe a volumetric display that has no such optical systems and can be easily constructed using parts on the market. In the display, sectioned images of 3D objects are displayed in sequence on a vacuum fluorescent display (VFD), which moves in a reciprocating motion, and the 3D images of the objects appear due to afterimage effect. Although the displayed images are small and monochromatic, clear 3D still and animation images can be displayed by the display. We also propose and describe a data generator for the display. The generator offers a frame, which specifies a display area three-dimensionally. Using the frame, the display data for the display can be easily generated on 3D software on the market.

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This paper proposes a method for decorating QR code, a kind of 2-dimensional barcode, with some illustrations inside the code in order to enhance the attractiveness and look-and-feel of the QR code. The proposed system formulates the task of finding appropriate positions, scales, and angles of illustrations, and solves the task by using general-purpose optimization solvers. The proposed system can therefore merge illustrations into the code without detracting machine-readability and stored information. This paper has shown that the proposed method could decorate still and anumated barcode images with illustrations inside the code.

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