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Topic: Rasterisation

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	Rasterisation - Wikipedia, the free encyclopedia
		Rasterization or rasterisation is the task of taking a two-dimensional image described in a vector format and converting it into pixels or dots for output on a video display or printer.
		The term rasterization can in general be applied to any process by which vector information can be converted into a raster format.
		Rasterization is currently the most popular technique for producing real-time computer graphics.
	en.wikipedia.org /wiki/Rasterisation (2226 words)

	Image editing for enamelists and silversmiths
		The process is different from the techniques presently used in reproducing images, which entail rasterisation (applying screens) as a means of reproducing all shades of fl and white (or colour).
		Rasterisation may in principle also be useful in the silversmith's trade; however, we shall leave that alone and review how images are formed on computer screens, as this has bearing on the techniques that we apply.
		The raster or screen resembles a slightly out of focus representation of a regular pattern, for example of fl and white squares, or fl and white lines.
	www.enamelandtiffany.com /spectechn/imaging.htm (2118 words)

	Introduction to GIS - raster based GIS
		Raster data is an abstraction of the real world where spatial data is expressed as a matrix of cells or pixels (see figure 9), with spatial position implicit in the ordering of the pixels.
		Raster structures may lead to increased storage in certain situations, since they store each cell in the matrix regardless of whether it is a feature or simply 'empty' space.
		In raster GIS the pixel equivalent is usually referred to as a cell element or grid cell.
	www.sli.unimelb.edu.au /gisweb/GISModule/GIST_Raster.htm (502 words)

	Raster to vector - Wikipedia, the free encyclopedia
		Raster to vector software and hardware technology for converting raster graphics to vector graphics is used by a number of fields, most notable in conjunction with CAD and GIS systems.
		For example drawings that only exist in physical form (blueprints, plots of lost files, etc.) can be converted into CAD files using a procedure called "Paper-to-CAD conversion" or drawing conversion, involving scanning and vectorization, or digitization.
		Rasterisation is the opposite process of converting vector graphics to raster graphics.
	en.wikipedia.org /wiki/Raster_to_vector (138 words)

	Rendering (computer graphics) - Wikipedia, the free encyclopedia
		This is called rasterization, and is the rendering method used by all current graphics cards.
		Second, rasterization can improve cache coherency and reduce redundant work by taking advantage of the fact that the pixels occupied by a single primitive tend to be contiguous in the image.
		For these reasons, rasterization is usually the approach of choice when interactive rendering is required; however, the pixel-by-pixel approach can often produce higher-quality images and is more versatile because it does not depend on as many assumptions about the image as rasterization.
	en.wikipedia.org /wiki/Computer_rendering (3239 words)

	The PC Technology Guide
		The Intel GMA 900 is optimised to use the Intel Pentium 4 processor for software-based geometry processing (such as transform and lighting) defined by Microsoft DirectX 9.
		The Intel GMA 900 handles the remaining three stages, including converting vertices to pixels, applying textures to pixels, and rasterisation — the application of lighting and other effects to produce the final pixel value.
		From the rasterisation stage the Intel GMA 900 writes the final pixel value to the frame buffer for display.
	www.pctechguide.com /13Chipsets_i915.htm (265 words)

	Project Proposal Form (Site not responding. Last check: 2007-11-05)
		If we assume that rasterisation of all polygons has to be performed, visibility can be determined by one extra comparison per pixel by using the z-buffer algorithm.
		In this case speed can be increased by rasterising only the parts thet are visible, in other words deferred rasterisation.
		With scan-line algorithms a narrow horizontal rectangle of the exact image is approximated by the visible parts of the line segments obtained as the intersection of the input polygons with a plane perpendicular to the viewing plane.
	www.infm.ulst.ac.uk /~mcgregor/projects/BSC/95/acf2lcu.html (138 words)

	Rasterisation - TheBestLinks.com - PostScript, Raster graphics, TheBestLinks.com:Find or fix a stub, Dot matrix, ...
		Rasterisation - TheBestLinks.com - PostScript, Raster graphics, TheBestLinks.com:Find or fix a stub, Dot matrix,...
		Rasterisation, PostScript, Raster graphics, TheBestLinks.com:Find or fix a stub...
		Typically, rasterization is done in order to display graphics.
	www.thebestlinks.com /Rasterisation.html (129 words)

	About the Face, Palden Jenkins
		Last year's Chilbolton Face and Message and this year's Face have connected characteristics, such as close-by locations, a similar oblong and rasterised format, and a face presentation, but they also have critical differences, such as the method of rasterising and the difference in the faces.
		[Rasterisation is the way fl-and-white photos are rendered into subtle shades, usually using dots.] My sense is that these formations were done by different, collaborating, sources, each with a style of its own.
		Some people have judged this year's linear rasterising effect to be in some way inferior to last year's dot-rasterisation.
	www.mightycompanions.org /cropcircles/palden-facearticle.html (1907 words)

	Data Processing
		The idea of rasterisation is to convert a vector map into a raster map.
		The reason that we convert all the vector maps into raster maps is that raster maps allow simplistic computation.
		As all the maps are done in State-wide scale, we have to mask out the areas that are not relevant.
	www.sli.unimelb.edu.au /zerger/lectures/451-335/projects/MART/page4.html (89 words)

	Re: [ft-devel] Revisiting LSB [2]
		There might be and probably will be other > rasterisation results which are good or even better but they aren't > generated by FreeType because the algorithms chosen simply don't generate > them.
		If the autohinter chooses to move a spline a little bit more to the left because we think it looks better today that will invalidate all test suites based on the previous behavior.
		> > Of course, after improving the rasterisation algorithm checking the result > by a human being is required and the data of the test suite which are used > while comparing the results when the test suite is executed have to be > replaced by the new samples.
	www.mail-archive.com /freetype-devel@nongnu.org/msg00614.html (471 words)

	Search RGU Module Database (Site not responding. Last check: 2007-11-05)
		To provide the student with the ability to evaluate the use of 2D graphics primitives, and the principles of modelling and rendering used in 3D graphics.
		Evaluate and assess algorithms for the rasterisation of 2D graphics primitives.
		Display systems: raster refresh graphics displays, frame buffers, RGB colour systems.
	www.rgu.ac.uk /prospectus/modules/disp_moduleview.cfm?Descriptor=CM4044&Revision=2 (274 words)

	Cambridge University Engineering Department - LaTeX and fonts
		rasterisation - An outline font must be represented by the dots of the output device (screen pixels, dots of ink, etc).
		The process of converting the outline to a pattern of dots on the grid of the device is called "rasterisation".
		When there aren't enough dots making up the glyph (such as at small sizes or low resolutions), there can be inconsistencies in the representation of certain letter features due to different rounding based on how the outline happens to sit on the grid (e.g.
	www-h.eng.cam.ac.uk /help/tpl/textprocessing/fonts.html (2448 words)

	Quake 3: Raytraced. [Archive] - Beyond3D Forum
		While rasterizers (even with such things as early-z, z-rejection and so on...) are rendering too many pixels when it comes to overdraw situations, an rt "knows" what's hidden and what's visible.
		Rasterisation uses spatial coherance so that you can reuse rasterisation on more than 1 pixel.
		Yes, they can be done on rasterizers, too, but you end up with a big performance trade-off.
	www.beyond3d.com /forum/archive/index.php/t-11352.html (5522 words)

	Parallel generation of unstructured surface grids (Site not responding. Last check: 2007-11-05)
		Initially in a rasterisation stage, the geometry to be meshed is analysed and a smooth distribution of local element sizes in 3-D space is set up automatically and stored in a Cartesian mesh.
		This background mesh is used by the advancing front surface mesher as spacing definition for the triangle generation.
		Both the rasterisation and the meshing are MPI-parallelised.
	www.andrew.cmu.edu /user/sowen/abstracts/Tr988.html (178 words)

	Rasterisation Definition \| Computer Dictionary \| Define meaning of Rasterisation (Site not responding. Last check: 2007-11-05)
		The scan-line algorithm is most commonly used to rasterise polygons.
		The paint engines in many graphical user interfaces, such as the GDI in Windows, the X Window System and Quartz in Mac OS X perform rasterisation both in software and with assistance from video hardware.
		Most PostScript and PCL printers rasterise pages with an embedded microcontroller or microprocessor.
	www.cpupedia.com /definition/rasterisation.aspx (316 words)

	[No title]
		Delayed rasterisation ******************* In this version of xfsft, rasterisation is delayed, in that glyphs are rasterized** on a strictly as-needed basis, which makes opening fonts much faster, especially in the case of fonts with a very large number of glyphs (such as fonts for Ideographic scripts).
		The main problem with delayed fonts is that much of the font metric information is difficult to provide correctly.
		Rasterisation of charcell fonts is especially aggressively delayed.
	artcontext.org /activism/linux/fontServer/USAGE (1065 words)

	MMX Technology explained
		A typical 3D rasterisation dataflow receives transformed, lit vertices and linking structures such as discrete triangles (three vertices each) or triangle meshes.
		In a mesh, each new vertex defines a new triangle whose other two vertices are the preceeding two in the mesh list.
		3D rasterisation is data-bandwidth intensive and performance problems often occur due to an inability to move data between main memory, CPU caches, CPU registers, graphics memory and buses.
	www.computerweekly.com /SiteMapArticle/Articles/1999/08/19/c1043573/178924/MMXTechnologyexplained.htm (2077 words)

	GameTomorrow » GPUs vs Cell (Site not responding. Last check: 2007-11-05)
		As for Cell rasterization, we to are interested in knowing where Cell falls relative to a specialized processor.
		Interesting, processing a quad in lockstep is clever and probably it’s small cost one has to pay in order to be way more efficient in the vast majority of cases (we don’t like images made out of white rumour…).
		I believe a SPE can be a good rasterizer if it can work on a local problem (tiled rendering?) and on untextured primitives.
	gametomorrow.com /blog/index.php/2005/11/30/gpus-vs-cell (2166 words)

	[ft-devel] Revisiting LSB [2]
		rasterisation results which are good or even better but they aren't
		don't see why some bits of the rasterisation result are randomly set.
		Of course, after improving the rasterisation algorithm checking the result
	www.mail-archive.com /freetype-devel@nongnu.org/msg00612.html (323 words)

	[No title] (Site not responding. Last check: 2007-11-05)
		Items 1 and 2 would be solved by the inclusion of the OpenGL for Windows optimised code, which I believe did include some 3DNow support in the last few versions (or maybe I am thinking of the OpenGL DDK stuff).
		There is also the optimised MMX assembler rasterisation code for software rendering that would be very useful for the OpenGL SI community (printing for instance would benefit from optimised software rendering).
		Item 3 is something I am not very familiar with internally in the SI, and I have not had a chance to dig into it recently.
	oss.sgi.com /cgi-bin/extract-mesg.cgi?a=ogl-sample&m=2000-04&i=200004231324791.SM00160@KENDALLB (321 words)

	Computer Graphics Principles
		To acquaint with the vector based objects displaying algorithms and methods in 2D and 3D scenes, namely: 2D objects rasterisation and trimming, 2D closed areas filling, objects transformations, 3D objects visibility solution, lighting, shading and texturing.
		Overview of fundamental principles of computer graphics (vector and raster based) and his consequence for real graphical applications.
		He/she acquaints with the 2D algorithms for line objects rasterisation, trimming and closed regions filling.
	www.fit.vutbr.cz /study/course-l.php.en?id=90 (438 words)

	COM3325 (Site not responding. Last check: 2007-11-05)
		The notes on erosion etc are here as a powerpoint.ppt or.pps file.
		Rasterisation - a look at 3D hardware including the Perimedia chip.
		A single coursework is set, due in week 9.
	www.cs.mdx.ac.uk /staffpages/peter/com3325 (40 words)

	EPCC (Site not responding. Last check: 2007-11-05)
		The proposed project will be viewed as a valuable extension to the current collaborative work being carried out between EPCC and GIS-PAL.
		The SSP work submitted involves the coding and testing of the Rasterisation Component of the Vector to Raster conversion.
		The purpose of the component is to produce a data representation known as Raster (in which space is represented by a regular tesselation) from the Vector input data.
	www.epcc.ed.ac.uk /computing/visitor_programmes/SSP/1999/ProjectSummary/SS-99-02.php (89 words)

	No match for rasterisation (Site not responding. Last check: 2007-11-05)
		Sorry, the term rasterisation is not in the dictionary.
		Please send in a definition so I can add it to the dictionary.
		Nearby terms: rastergram « raster graphics « Raster Image Processor « rasterising » rasterizing » raster subsystem » Ratatosk
	ftp.sunet.se /foldoc/foldoc.cgi?rasterisation (60 words)

	[No title]
		We are willing to release the ogcode for software rasterization, but understand that it will be a reasonable amount of work to get it operating with the SI.
		So before going to the effort of pulling the code into the oss.sgi.com tree, it would be really helpful to have someone commit to, or at least express substantial willingness to, make it work in the SI.
		The next layer is for rasterisation only hardware and provides a device driver model for that.
	oss.sgi.com /archives/mbox/ogl-sample/2000-04 (4605 words)

	RE: LibGGI3D RFC (Site not responding. Last check: 2007-11-05)
		If you want do draw a triangle, you have a rasteriser.
		That's what rasterisation is. Walking along the edges of a 2D triangle and filling in the raster spans from one edge to the other.
		That is what you need for rasterisation only.
	www.ggi-project.org /mailinglist/aug98/714.html (582 words)

	u96 USF subtitle editor - homepage (Site not responding. Last check: 2007-11-05)
		The rasterising engine used in u96 (code name "pixifier") is developed as independent project and is also used in my other projects that incorporate USF rasterisation.
		There is also a MPEG-2 SPU codec object, which when in a usable state will allow handling of Vobsubs (sub/idx), maestro and maybe even "raw" ifo/vob files.
		The AviSynth filter picsubu is not (to be) directly used in u96 but it uses the abovementioned projects also used by u96 and is meant as a complementary software to u96 allowing to hardsub the advanced styling and effects in USF that cannot currently be rasterised by other software.
	u96.corecodec.org /?C=D;O=A (720 words)

	Beyond3D Forum - 1280x720/60fps - How many polygons are "enough"? (Site not responding. Last check: 2007-11-05)
		When "people" talk about using or accelerating rendering with Cell, they usually either mean something like using some SPEs to apply post-processing effects or do rasterisation on seperate buffers from the GPU (because you don't want to have two differently behaved rasterisers working on the same scene), e.g.
		A CPU can help on either end of the pipe, you've discussed the end of the pipe (post processing), but there's also work that could be done before you feed data into the pipe.
		And yes, in some instances, parallel rasterisation of independent elements.
	www.beyond3d.com /forum/printthread.php?t=23909 (2782 words)

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