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Shadow segmentation is a critical issue for systems aiming at extracting, tracking or recognizing objects in a given scene. Shadows can in fact modify the shape and colour of objects and therefore affect scene analysis and interpretation systems in many ap ...
This article surveys the theory and techniques of computer graphics and animation. The main topics are modeling primitives, transformations and colors, visible surface algorithms, light and shadows, ray-tracing, texture, phenomena modeling, principles of c ...
The evaporation through shadow masks (nanostencils) overcomes the limitations typically given by the patterning methods involving conventional optical lithography and etching, such as diffraction limits and etch-selectivity. It allows making low-cost nanop ...
We present a system for interactive shape and appearance editing of 3D point-sampled geometry. By generalizing conventional 2D pixel editors, our system supports a great variety of different interaction techniques to alter shape and appearance of 3D point ...
A 3D imager is presented capable of capturing the depth map of an arbitrary scene. Depth is measured by computing the time-of-flight of a ray of light as it leaves the source and is reflected by the objects in the scene. The round-trip time is converted to ...
A technique is described for adding natural-looking hair to standard rendering algorithms. Using an explicit hair model, in which each individual hair is represented by a three-dimensional curve, the technique uses pixel blending combined with Z-buffer and ...
This paper provides a detailed and complete description of merging virtual actors with animation in a real environment. It describes the tasks involved in each stage of integration, such as video acquisition, extraction of camera parameters, creation and a ...
This paper presents techniques and tools for creating and animating virtual actors in real scenes. Several problems are explained: real objects hidden by virtual actors and virtual actors hidden by real objects, collision detection between the virtual acto ...
