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.

Principles of Appearance Acquisition and Representation

Abstract: Algorithms for scene understanding and realistic image synthesis require accurate models of the way real-world materials scatter light This class describes recent work in the graphics community to measure the spatially- and directionally-varying reflectance and subsurface scattering of complex materials, and to develop efficient representations and analysis tools for these datasets We describe the design of acquisition devices and capture strategies for BRDFs and BSSRDFs, efficient factored representations, and a case study of capturing the appearance of human faces

High speed interconnect bus

Abstract: Several graphics processing elements are interconnected in a ring using a plurality of individual busses. Each bus interconnects a pair of the graphics processing elements and includes a like group of signal lines for transferring graphics command signals and information signals between graphics processing elements in the ring. Each group of signal lines includes: a group of information signal lines for transferring information between the processing elements; a clock signal line for transferring a clock signal associated with the information signals on the information signal lines to the next processing element in the ring; a ready signal line, on which a ready signal is transferred from a first graphics processing element to a previous graphics processing element in the ring, the ready signal indicating the ability of the first graphics processing element to receive information from the previous graphics processing element; and a group of type signal lines, for transferring type signals indicating the type of operation to be performed on information on the information signal lines. One of the graphics processing elements is a host interface processing element and is coupled to a host processor to receive commands and information signals to be forwarded to the other graphics processing elements in the ring. Each of the graphics processing elements includes: a core processing unit; an interface unit, including a pass through path, which permits command and information signals to be transferred directly through the interface unit to another graphics processing element in the ring, and a backup path, for temporarily storing the forwarded command and information signals; and a plurality of buffers, coupled between the interface unit and the corresponding core processor, for temporarily storing the command and information signals for transfer to the core processing unit.

Visualization of large nested graphs in 3D: Navigation and Interaction

Abstract: Most systems for visualizing large information structures use 2D graphics to view networks of nodes and arcs that represent data. To understand large structures it is often necessary to show both small-scale and large-scale structures. This has been called the problem of focus and context. Distortion, rapid zooming, elision and multiple windows are all techniques that have been developed to provide both focus and context within single representations. We review these techniques and argue that 3D visualization has a number of advantages. A system called NestedVision3D (NV3D) will be presented that has been developed to investigate the use of 3D visualization for understanding the structure of large computer programs. NV3D is a system for visualizing large nested graphs using interactive 3D graphics. It has been tested with graphs containing more than 35,000 nodes and 100,000 relationships. We describe NV3D and its design philosophy. Basic navigation is facilitated by a set of 3D widgets, rapid scaling and interactive elision. More experimental features include animations called snakes, which are used to trace dynamic software behavior.

Image Registration by a Regularized Gradient Flow. A Streaming Implementation in DX9 Graphics Hardware

Abstract: The presented image registration method uses a regularized gradient flow to correlate the intensities in two images. Thereby, an energy functional is successively minimized by descending along its regularized gradient. The gradient flow formulation makes use of a robust multi-scale regularization, an efficient multi-grid solver and an effective time-step control. The data processing is arranged in streams and mapped onto the functionality of a stream processor. This arrangement automatically exploits the high data parallelism of the problem, and local data access helps to maximize throughput and hide memory latency. Although dedicated stream processors exist, we use a DX9 compatible graphics card as a stream architecture because of its ideal price-performance ratio. The new floating point number formats guarantee a sufficient accuracy of the algorithm and eliminate previously present concerns about the use of graphics hardware for medical computing. Therefore, the implementation achieves reliable results at very high performance, registering two 2572 images in approximately 3sec, such that it could be used as an interactive tool in medical image analysis.

Computer method and apparatus for creating visible graphics by using a graph algebra

Abstract: A computer method, apparatus and storage medium is provided for creating quantitative aesthetic graphics from data. The invention utilizes a graph algebra to construct graphs and visually or otherwise represents the graphs as a quantitative aesthetic graphic representation. To create the quantitative aesthetic graphics from data, the data is indexed to form a data set. Thereafter, the data is converted into a variable data structure composed of an index set, a range and a function. The variable data structure is converted into a variable set by using at least one of a blend step, a cross step and a nest step. The variable set is mapped into a set of points and the set of points is mapped into an aesthetic representation.