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Now showing 1 - 3 of 3
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    A Survey of Digital Mosaic Techniques
    (The Eurographics Association, 2006) Battiato, S.; Blasi, G. Di; Farinella, G.M.; Gallo, G.; S. Battiato and G. Gallo and F. Stanco
    Art often provides valuable hints for technological innovations especially in the field of Image Processing and Computer Graphics. In this paper we survey in an unified framework several methods to transform a raster input image into good quality mosaics. The common and different ideas among the methods are reported and described. Finally we try to address the evaluation problem of an NPR algorithm.
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    Smart Ideas for Photomosaic Rendering
    (The Eurographics Association, 2006) Blasi, G. Di; Gallo, G.; Petralia, M.P.; S. Battiato and G. Gallo and F. Stanco
    Photomosaic is a technique which transforms an input image into a rectangular grid of thumbnail images preserving the overall appearance. The typical photomosaic algorithm searches from a large database of images one picture that approximates a block of pixels in the main image. Since the quality of the output depends on the size of the database, it turns out that the bottleneck in each photomosaic algorithm is the searching process. In this paper we present a technique to speed-up this critical phase using the Antipole Tree Data Structure. This improvement allows the use of larger databases without requiring much longer processing time, leading to very interesting results. Further we present some ideas to render an image in a "photomosaic style". These techniques are based on QuadTree and fractal images and allow the creation of very interesting "photomosaic effects".
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    Tradition and Virtuality: The Caltagirone Staircase
    (The Eurographics Association, 2006) Campisi, V.; Blasi, G. Di; Gallo, G.; S. Battiato and G. Gallo and F. Stanco
    Computer Graphics (CG) and Virtual Reality (VR) are two of the most interesting research fields in Computer Science. In this paper we present an application of CG and VR in arts, tourist promotion and cultural heritage. We propose a technique able to simulate the Saint Mary of the Mount staircase, a magnificent staircase in Caltagirone, a beautiful baroque town in Sicily (Italy). Our system is an example of how new technologies may lead to a new way of interacting with traditional arts