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.

Accelerating 3D convolution using graphics hardware

Abstract: Many volume filtering operations used for image enhancement, data processing or feature detection can be written in terms of three-dimensional convolutions. It is not possible to yield interactive frame rates on todays hardware when applying such convolutions on volume data using software filter routines. As modern graphics workstations have the ability to render two-dimensional convoluted images to the frame buffer, this feature can be used to accelerate the process significantly. This way generic 3D convolution can be added as a powerful tool in interactive volume visualization toolkits.

Portable personal computer and electronic camera

Abstract: A portable personal computer having a display unit for displaying graphics, characters, etc. on a screen and an operation unit for inputting information, includes an upper panel having the display unit, a lower panel having the operation unit, an electronic camera which is at least partially designed in a spherical shape, and a mount recess portion having a curved-face support portion which is secured to a part of the upper panel and brought into contact with the spherical surface of the electronic camera to rotatably hold the electronic camera.

Portable Multifunction Device, Method, and Graphical User Interface for Adjusting an Insertion Point Marker

Abstract: In accordance with some embodiments, a computer-implemented method is performed at a portable electronic device with a touch screen display. The method includes: displaying graphics and an insertion marker at a first location in the graphics on the touch screen display; detecting a finger contact with the touch screen display; and in response to the detected finger contact, expanding the insertion marker from a first size to a second size on the touch screen display and expanding a portion of the graphics on the touch screen display from an original size to an expanded size. The method further includes detecting movement of the finger contact on the touch screen display and moving the expanded insertion marker in accordance with the detected movement of the finger contact from the first location to a second location in the graphics.

DRAWxtl, an open-source computer program to produce crystal structure drawings

Abstract: The computer program DRAWxtl produces crystal structure drawings in the form of an interactive screen representation, as well as VRML files for use on web pages and in classroom teaching, and creates input files for the popular Persistence of Vision Raytracer (POV-Ray) rendering program for publication-quality graphics, including generation of stereo pairs. DRAWxtl output produces the standard kinds of graphical representations: spheres, ellipsoids, bonds and polyhedra of any complexity. In addition, it can draw arrows to represent magnetic moments, show capped cones to indicate the location of lone-pair electrons and display Fourier contours in three dimensions. A unique feature of this program is the ability to plot incommensurately modulated and composite structures. This open-source program can be used with operating systems as diverse as Windows (9X, NT, 2000 and XP), Mac OS X, Linux and most other varieties of Unix.

Efficient parallel lists intersection and index compression algorithms using graphics processing units

Abstract: Major web search engines answer thousands of queries per second requesting information about billions of web pages. The data sizes and query loads are growing at an exponential rate. To manage the heavy workload, we consider techniques for utilizing a Graphics Processing Unit (GPU). We investigate new approaches to improve two important operations of search engines -- lists intersection and index compression.For lists intersection, we develop techniques for efficient implementation of the binary search algorithm for parallel computation. We inspect some representative real-world datasets and find that a sufficiently long inverted list has an overall linear rate of increase. Based on this observation, we propose Linear Regression and Hash Segmentation techniques for contracting the search range. For index compression, the traditional d-gap based compression schemata are not well-suited for parallel computation, so we propose a Linear Regression Compression schema which has an inherent parallel structure. We further discuss how to efficiently intersect the compressed lists on a GPU. Our experimental results show significant improvements in the query processing throughput on several datasets.