21,822 research outputs found

    Raster graphics extensions to the core system

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    A conceptual model of raster graphics systems was developed. The model integrates core-like graphics package concepts with contemporary raster display architectures. The conceptual model of raster graphics introduces multiple pixel matrices with associated index tables

    Survey of currently available high-resolution raster graphics systems

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    Presented are data obtained on high-resolution raster graphics engines currently available on the market. The data were obtained through survey responses received from various vendors and also from product literature. The questionnaire developed for this survey was basically a list of characteristics desired in a high performance color raster graphics system which could perform real-time aircraft simulations. Several vendors responded to the survey, with most reporting on their most advanced high-performance, high-resolution raster graphics engine

    A study of real-time computer graphic display technology for aeronautical applications

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    Hardware, algorithms and software for real-time raster graphics were designed and implemented

    Plaster Users\u27 Guide

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    Creating graphics for TV and storage tube displays is common and easy at most computer installations today. It is less easy to produce high-quality hard-copy of graphics for publication. This manual describes a program called Plaster which produces a raster representation of a picture created with the PlotlO graphics package for display on the Santec S700 printer. Plaster (PlotlO to Raster) thus allows one to obtain hard-copy of an image created with the prevalent and easy to use PlotlO language on the inexpensive but high quality Santec printer

    Studying Raster Graphics at School

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    У статті дано визначення комп’ютерної графіки, растрової графіки, растрового зображення. Перераховані деякі характеристики растрового зображення. Описується загальне вивчення растрової графіки в школі та запропоновані способи додаткового вивчення растрової графіки.The article defines computer graphics, raster graphics, raster image. Some features of the raster image are listed. The general study of raster graphics in the school is described and ways of additional study of raster graphics are offered

    The use of computer-generated color graphic images for transient thermal analysis

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    Color computer graphics techniques were investigated as a means of rapidly scanning and interpreting large sets of transient heating data. The data presented were generated to support the conceptual design of a heat-sink thermal protection system (TPS) for a hypersonic research airplane. Color-coded vector and raster displays of the numerical geometry used in the heating calculations were employed to analyze skin thicknesses and surface temperatures of the heat-sink TPS under a variety of trajectory flight profiles. Both vector and raster displays proved to be effective means for rapidly identifying heat-sink mass concentrations, regions of high heating, and potentially adverse thermal gradients. The color-coded (raster) surface displays are a very efficient means for displaying surface-temperature and heating histories, and thereby the more stringent design requirements can quickly be identified. The related hardware and software developments required to implement both the vector and the raster displays for this application are also discussed

    Vector assembly of colloids on monolayer substrates

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    The key to spontaneous and directed assembly is to encode the desired assembly information to building blocks in a programmable and efficient way. In computer graphics, raster graphics encodes images on a single-pixel level, conferring fine details at the expense of large file sizes, whereas vector graphics encrypts shape information into vectors that allow small file sizes and operational transformations. Here, we adapt this raster/vector concept to a 2D colloidal system and realize 'vector assembly' by manipulating particles on a colloidal monolayer substrate with optical tweezers. In contrast to raster assembly that assigns optical tweezers to each particle, vector assembly requires a minimal number of optical tweezers that allow operations like chain elongation and shortening. This vector approach enables simple uniform particles to form a vast collection of colloidal arenes and colloidenes, the spontaneous dissociation of which is achieved with precision and stage-by-stage complexity by simply removing the optical tweezers

    Im2Vec: Synthesizing Vector Graphics without Vector Supervision

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    Vector graphics are widely used to represent fonts, logos, digital artworks, and graphic designs. But, while a vast body of work has focused on generative algorithms for raster images, only a handful of options exists for vector graphics. One can always rasterize the input graphic and resort to image-based generative approaches, but this negates the advantages of the vector representation. The current alternative is to use specialized models that require explicit supervision on the vector graphics representation at training time. This is not ideal because large-scale high quality vector-graphics datasets are difficult to obtain. Furthermore, the vector representation for a given design is not unique, so models that supervise on the vector representation are unnecessarily constrained. Instead, we propose a new neural network that can generate complex vector graphics with varying topologies, and only requires indirect supervision from readily-available raster training images (i.e., with no vector counterparts). To enable this, we use a differentiable rasterization pipeline that renders the generated vector shapes and composites them together onto a raster canvas. We demonstrate our method on a range of datasets, and provide comparison with state-of-the-art SVG-VAE and DeepSVG, both of which require explicit vector graphics supervision. Finally, we also demonstrate our approach on the MNIST dataset, for which no groundtruth vector representation is available. Source code, datasets, and more results are available at geometry.cs.ucl.ac.uk/projects/2021/Im2Vec

    An architecture for interactive raster graphics

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    A radical reappraisal of the 3-D Interactive raster graphics pipeline has resulted In an experimental architecture for a workstation which is currently being evaluated at the CW!. The principal features of this architecture are that It: - concentrates exclusively on real-time interactive 3-D graphics (initially for CAD). - uses object space rather than Image space methods where possible. - avoids using a frame buffer. - only uses custom VLSI where commercial products are unlikely to suffice In the near term. Four years Into the project the system design Is complete and the major components have been acquired and the custom VLSI chips hove been packaged and tested. The current experience with the system is based on detailed simulations which gave a fairiy clear Idea on Its strengths and limitations. A complete, but reduced resolution, experimental prototype system is now being assembled
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