In aims to increase the efficiency of distributed multimedia medical databases in terms of clinical consulting process, we propose a multimedia medical database component for a dialysis telemedicine application to man...
详细信息
This paper presents Act, an object-oriented library for projects from specialized 3D graphics applications to simple interactive educational programs. Act meets the needs of both occasional and expert graphics program...
详细信息
This paper presents Act, an object-oriented library for projects from specialized 3D graphics applications to simple interactive educational programs. Act meets the needs of both occasional and expert graphics programmers, offering a high-level access to the OpenGL library and additional features including object creation, manipulation, and interaction. An interpreted language allows the Act library to be extended easily and dynamically.
Implicit modeling is a recent trend in computergraphics and a variety of skeleton-based models has been proposed. In this paper we present a hierarchical framework that can encompass a wide range of these variants, p...
详细信息
Implicit modeling is a recent trend in computergraphics and a variety of skeleton-based models has been proposed. In this paper we present a hierarchical framework that can encompass a wide range of these variants, providing a more flexible way for defining the shape of implicit objects. We also derive a new decay function, which is computationally cheap.
Interactive tridimensional visualization of terrain models can be found in Geographical Information Systems and computer games. Both applications share the need for high performance algorithms that are tailored to pro...
详细信息
Interactive tridimensional visualization of terrain models can be found in Geographical Information Systems and computer games. Both applications share the need for high performance algorithms that are tailored to produce textured images in interactive time, say at least 5 frames per second. In this paper we propose and analyze the extension of a well known ray casting algorithm to the case where the view plane is not vertical. Three efficient algorithms are presented and compared. Experimental results are shown and conclusions are made.
This article describes a method for object and terrain visualization by means of the combination of two algorithms, one for terrain data and one for objects. Our purpose is to generate, efficiently and rapidly, aerial...
详细信息
This article describes a method for object and terrain visualization by means of the combination of two algorithms, one for terrain data and one for objects. Our purpose is to generate, efficiently and rapidly, aerial images of terrain with objects such as houses, vehicles, and transmission lines, thus allowing a simulated flight. For the objects, described by lines and polygons. the Z-Buffer algorithm is used;for the terrain, described by height maps, an optimized Ray-Casting Algorithm, called Floating Horizon Algorithm, is used.
This paper presents a new quantization method for color images. It uses a local error optimization strategy to generate near optimal quantization levels. The algorithm is simple to implement and produces results that ...
详细信息
This paper presents a new quantization method for color images. It uses a local error optimization strategy to generate near optimal quantization levels. The algorithm is simple to implement and produces results that are superior than those of other popular image quantization algorithms.
The paper presents Act, an object oriented library for projects from specialized 3D graphics applications to simple interactive educational programs. Act meets the needs of both occasional and expert graphics programm...
详细信息
The paper presents Act, an object oriented library for projects from specialized 3D graphics applications to simple interactive educational programs. Act meets the needs of both occasional and expert graphics programmers, offering a high level access to the OpenGL library and additional features including object creation, manipulation, and interaction. An interpreted language allows the Act library to be extended easily and dynamically.
The paper presents a prefiltering technique for antialiasing two dimensional continuous curves which enables the correct handling of the geometry (self-intersections, small loops, cusps, curves with high and small rad...
详细信息
The paper presents a prefiltering technique for antialiasing two dimensional continuous curves which enables the correct handling of the geometry (self-intersections, small loops, cusps, curves with high and small radius of curvature, etc.) using a generic class of filters. Moreover, the technique allows for rendering curves of arbitrary thickness and can be optimally tuned to the bits used for image quantisation.
Implicit modeling is a recent trend in computergraphics and a variety of skeleton based models have been proposed. We present a hierarchical framework that can encompass a wide range of these variants, providing a mo...
详细信息
Implicit modeling is a recent trend in computergraphics and a variety of skeleton based models have been proposed. We present a hierarchical framework that can encompass a wide range of these variants, providing a more flexible way for defining the shape of implicit objects. We also derive a new decay function, which is computationally cheap.
Regular grids representing volume data are usually preferred to triangulation structures because they are simpler to store and faster to process. We consider a special family of triangulations combining the flexibilit...
详细信息
Regular grids representing volume data are usually preferred to triangulation structures because they are simpler to store and faster to process. We consider a special family of triangulations combining the flexibility of an adaptive representation of fields with some intrinsic regularity. We show that the projection algorithm to visualize scalar fields represented by adaptive square triangulations is far more efficient than to visualize general triangulations and it is competitive with regular grid visualization techniques.
暂无评论