what is raster scanning in simple terms?
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Hi,\nLet me explain in terms of the compuet monitor itself. If you look closely, u'll find that the monitor is actually a collection of a very very large no.of dots. Each dot illuminates to a certain degree of brightness and depending on how bright a group of dots put togetheris, the brighter or darker would be that section of the screen. Now coming to "Raster", what happens is that there is a beam coming from behind your screen surface that is responsible to make your screen light up. This beam is pointed first at the top left corner of ur screen, then it travels to the right.. til the time it reaches the right most dot on the first row, then it comes down to the next row of dots, again at the left most dot... and goes on. Finally when it reaches the right most dot on the last row of your screen, it travels back to the top-left and continues ahead. This whole process takes place very fast.. and due to a phenomenon called 'Persistence of vision', the image on the screen appears to move smoothly rather than in dots :)\n\nThis method of scanning is called 'Raster'...  in which no matter whether the object on the screen is to be displayed moving to the left or right, top or down, the scanning always happens in a horizontal (in this case left to right) fashion.
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A graphics data format for bitmap images. It uses 24 bits per pixel and is a common output format for ray tracing programs.
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Refers to graphics filters
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simple!\nuse black and white mode for scanning
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I am using an Epson 4180 Photo scanner.  Works well for the job.
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What is document imaging?\n\nDocument imaging is the process of scanning paper documents, converting them to digital images that are then stored on CD, DVD, or other magnetic storage. With Microsoft Office Document Imaging, you can scan paper documents and convert them to digital images that you can save in Tagged Image File Format (TIFF) (Tagged Image File Format (TIFF): A high-resolution, tag-based graphics format. TIFF is used for the universal interchange of digital graphics.) or Microsoft Document Imaging Format (MDI) (Microsoft Document Imaging Format (MDI): A high resolution, tag-based graphics format, based on the Tagged Image File Format (TIFF) used for digital graphics.) to your computer’s hard disk, network server, CD, or DVD. Microsoft Office Document Imaging also gives you the ability to perform optical character recognition (OCR) (OCR: Translates images of text, such as scanned documents, into actual text characters. Also known as text recognition.) either as part of scanning a document, or while you work with a TIFF or MDI file. By performing OCR, you can then copy recognized text from a scanned image or a fax into a Microsoft Word document or other Office progam file.\n\nSince all the files are in Tiff format you need to save it into jpg file to do editing of the photos. The best and free software to convert the file is IrfanView. You can download the file from this location http://www.irfanview.com/main_download_engl.htm.
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You have to use an Optical Character Recognition software (OCR). Usually one comes with the scanner.  It reads the page, and does its best to convert the page into a text file that you can edit.
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computer graphics, the transfer of pictorial data into and out of a computer. Using analog-to-digital conversion techniques, a variety of devices—such as curve tracers, digitizers, and light pens—connected to graphic computer terminals, computer-aided design programs, or optical scanners can be used to store pictorial data in a digital computer. By reversing the process through digital-to-analog conversion techniques, the stored data can be displayed in graphical form on a mechanical plotting board, or plotter, or on a televisionlike graphic display terminal. Raster graphics stores and displays images as a bit map, a series of closely spaced dots (or pixels) arranged in rows and columns. Vector, or object-oriented, graphics stores the images as mathematical formulas; images are displayed by calculating the coordinates of the end points and then drawing lines between them. Computer graphics capabilities range from the simple display of digital tabulations as line graphs and pie charts to complex animation and elaborate special effects for television and motion pictures. Computer graphics are used in architecture, art, computer-aided design, electronic games, flight simulators for pilot training, and molecular modeling.
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yes. go to "insert" then "raster image". the find the pic on your computer.
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A scanner can help you.
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sift\nfist\nfigs\ngist\nhist\nsigh
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r u 4 r3al ?!! \n\nwhat mapping ? what equasion?  deckard maybe ? \n\nmore info please.
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ADOBE PHOTOSHOP 6 or 7 or newest is ADOBE PHOTOSHOP CS. Scan portions of the map then "sew" them together with MOVE tool
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you can scan in .jpeg format then re save as .gif format which will automatically compress the size you can use photoshop for this as internet mostly support .gif files
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Use the Add-a-Plotter wizard to add a raster "printer" - eg. for the TIFF format: use This Computer, select Raster File Formats (as Manufacturer) and under Model select TIFF (or PNG, JPEG...).\n\nRaster file size is unitless (pixels, not inches or mm) - to increase resolution (in pixels) set a 'larger paper size'. You can create a custom "paper" size for this "printer" - increase this paper size to achieve higher resolution (more pixels in the resulting raster file). The DPI (dots-per-inch) value is usually fixed (e.g. 100 dpi) so to get 2000 pixel resolution you will have to set 2000/100 = 20 inches page size. (in higher AutoCAD versions you can use directly pixels)\n\nUnder Device settings you can set the color depth (for color formats) - fewer colors means smaller files.\n\nYou can also export to other raster formats - CALS, JPG/JPEG, BMP, PNG, TGA, PCX.
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A 3D scanner is a device that analyzes a real-world object or environment to collect data on its shape and possibly color. The collected data can then be used to construct digital, three dimensional models that are used in a wide variety of applications. These devices are used extensively by industry in the production of such things as movies and video games. Other applications include industrial design and prototyping, computer vision and documentation of cultural artifacts.\n\nTwo types of 3D scanners are contact and non-contact. Non-contact 3D scanners can be further divided into two main categories, active scanners and passive scanners. There are a variety of technologies that fall under each of these categories.\n\nThe purpose of a 3D scanner is usually to create a point cloud of geometric samples on the surface of the subject. These points can then be used to extrapolate the shape of the subject (a process called reconstruction). If color information is collected at each point, then the colors on the surface of the subject can also be determined.\n\n3D scanners are very analogous to cameras. Like cameras, they have a cone-like field of view, and like cameras, they can only collect information about surfaces that are not obscured. While a camera collects color information about surfaces within its field of view, 3D scanners collect distance information about surfaces within its field of view. \n\nGood quality 3D scanner will cost you $ 2495.\nPl. visit:\nhttps://www.nextengine.com/indexSecure.htm
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CT Scanning means: Computed Tomography or CAT Scan\nThe following is copied from a Wikipedia source:\nComputed tomography (CT), originally known as computed axial tomography (CAT) and body section roentgenography, is a medical imaging method employing tomography where digital geometry processing is used to generate a three-dimensional image of the internals of an object from a large series of two-dimensional X-ray images taken around a single axis of rotation. The word "tomography" is derived from the Greek tomos (slice) and graphia (describing). CT produces a volume of data which can be manipulated, through a process known as windowing, in order to demonstrate various structures based on their ability to block the x-ray beam. Although historically (see below) the images generated were in the axial or transverse plane (orthogonal to the long axis of the body), modern scanners allow this volume of data to be reformatted in various planes or even as volumetric (3D) representations of structures.\n\nAlthough most common in healthcare, CT is also used in other fields, e.g. nondestructive materials testing.