Graphics

About: Graphics is a research topic. Over the lifetime, 17394 publications have been published within this topic receiving 411468 citations. The topic is also known as: graphic.

Implicit Objects in Computer Graphics

Abstract: Implicit definition and description of geometric objects and surfaces plays a critical role in the appearance and manipulation of computer graphics. In addition, the mathematical definition of shapes, using an implicit form, has pivotal applications for geometric modeling, visualization and animation.Until recently, the parametric form has been by far the most popular geometric representation used in computer graphics and computer-aided design. Whereas parametric objects and the techniques associated with them have been exhaustively developed, the implicit form has been used as a complementary geometric representation, mainly in the restricted context of specific applications. However, recent developments in graphics are changing this situation, and the community is beginning to draw its attention to implicit objects. This is reflected in the current research of aspects related to this subject. Employing a coherent conceptual framework, Implicit Objects in Computer Graphics addresses the role of implicitly defined objects in the following parts: mathematical foundations of geometric models, implicit formulations for the specification of shapes, implicit primitives, techniques for constructing and manipulating implicit objects, modeling, rendering and animating implicit objects.

Polyzoom: multiscale and multifocus exploration in 2d visual spaces

Abstract: The most common techniques for navigating in multiscale visual spaces are pan, zoom, and bird's eye views. However, these techniques are often tedious and cumbersome to use, especially when objects of interest are located far apart. We present the PolyZoom technique where users progressively build hierarchies of focus regions, stacked on each other such that each subsequent level shows a higher magnification. Correlation graphics show the relation between parent and child viewports in the hierarchy. To validate the new technique, we compare it to standard navigation techniques in two user studies, one on multiscale visual search and the other on multifocus interaction. Results show that PolyZoom performs better than current standard techniques.

The Incidence and Quality of Graphics in Annual Reports: An International Comparison

Abstract: Graphical presentation of financial and non-financial information represents a relatively low-cost means by which companies can enrich their annual reports. Graphics focus readers' attention. Further, graphics may facilitate understanding and enhance recall.This study compares the relative incidence and measurement distortion of graphics contained in a matched sample of U.S. and non-U.S. companies listed on two major U.S. stock exchanges. A sample of 270 annual reports and 2,270 graphs from 12 countries was examined. While both U.S. and non-U.S. companies rely heavily on graphics, the annual reports of non-U.S. companies contain a sig nificantly higher number of graphics. Both groups fail to comply with many of the guidelines for good graphics as set forth in previous literature. Most notably, graph discrepancy indices (GDIs) reveal that both U.S. and non-U.S. companies present graphics that may be misleading to users. The incidence of graphic distor tion was higher for non-U.S. companies.The findings are...

Gaming machine having targeted run-time software authentication

Abstract: A gaming machine that authenticates its gaming software substantially continuously and repetitiously while the gaming machine is powered on. A processor, while running the gaming machine's gaming program, determines whether the data in each of a plurality of memories is authentic. The processor may read multiple memories in a parallel fashion while making memory contents authenticity determinations. The processor may also read multiple memories in a serial fashion while making memory contents authenticity determinations. The processor may also read same memories in a parallel fashion and read other memories in a serial fashion while determining the authenticity of each memory's contents. Furthermore, the contents of a memory may be analyzed to decipher between executable data and graphics data such that the executable data's authenticity is determined more often than the graphics data's authenticity

Skip strips: maintaining triangle strips for view-dependent rendering

Abstract: View-dependent simplification has emerged as a powerful tool for graphics acceleration in visualization of complex environments. However, view-dependent simplification techniques have not been able to take full advantage of the underlying graphics hardware. Specifically, triangle strips are a widely used hardware-supported mechanism to compactly represent and efficiently render static triangle meshes. However, in a view-dependent framework, the triangle mesh connectivity changes at every frame making it difficult to use triangle strips. In this paper we present a novel data-structure, Skip Strip, that efficiently maintains triangle strips during such view-dependent changes. A Skip Strip stores the vertex hierarchy nodes in a skip-list-like manner with path compression. We anticipate that Skip Strips will provide a road-map to combine rendering acceleration techniques for static datasets, typical of retained-mode graphics applications, with those for dynamic datasets found in immediate-mode applications.