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Topic: Image format

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	Encyclopedia: Image format (Site not responding. Last check: 2007-10-16)
		Photo-Paint Images are usually smaller than Photoshop Documents.
		PNG is a 24 bit color depth image format with lossless compression.
		Images may be subject to relevant owners' copyright.
	www.nationmaster.com /encyclopedia/Image-format (870 words)

	Tagged Image File Format - Wikipedia, the free encyclopedia
		Originally created by the company Aldus for use with PostScript printing, TIFF is a popular format for high color depth images, along with JPEG and PNG.
		TIFF format is widely supported by image-manipulation applications such as Photoshop by Adobe, GIMP and Paint Shop Pro by Jasc, by desktop publishing and page layout applications, such as QuarkXPress and Adobe InDesign, and by scanning, faxing, word processing, optical character recognition, and other applications.
		Tags can indicate the basic geometry of the image, such as its size, or define how the image data is arranged and whether various image compression options are used.
	en.wikipedia.org /wiki/Tagged_Image_File_Format (716 words)

	[No title]
		G I F (tm) Graphics Interchange Format (tm) A standard defining a mechanism for the storage and transmission of raster-based graphics information June 15, 1987 (c) CompuServe Incorporated, 1987 All rights reserved While this document is copyrighted, the information contained within is made available for use in computer software without royalties, or licensing restrictions.
		This 'Graphics Interchange Format' (tm) allows high-quality, high-resolution graphics to be displayed on a variety of graphics hardware and is intended as an exchange and display mechanism for graphics images.
		Because the image descriptor allows for placement of the image within the logical screen, it is possible to define a sequence of images that may each be a partial screen, but in total fill the entire screen.
	www.w3.org /Graphics/GIF/spec-gif87.txt (3680 words)

	PNG images - PNG Image Format (Site not responding. Last check: 2007-10-16)
		True color 24 bit images are one of fifteen color options in PNG format.
		PNG format allows the gamma value of the computer which created an image to be embedded into the image file.
		Portable Network Graphics format was originally devised at a time when there was no browser support for GIF animation, so animation was not included in the specification.
	www.webcolors.freeserve.co.uk /png (1252 words)

	Benefits of the PNG Image Format
		The PNG format was developed when it was discovered by the entire development community in early 1995 that the GIF image format uses LZW compression, technology which was patented in 1985 by Unisys corporation.
		The TIFF format was the cross-platform image format by choice until PNG was introduced, and according to some still is. TIFF's are a developer's nightmare.
		The images on the left are the original PNG's, the images in the middle are JPEG's that were created from the original PNG overlayed onto a background, and the images on the right are JPEG's that were created from the original PNG and overlayed onto the same background as the table.
	www.atalasoft.com /PNG.aspx (1309 words)

	Image Formats
		In addition, since the information is encoded in vectors, Meta/Vector image formats can be blown up or down (a property known as "scalability") without looking jagged or crowded (a property known as "pixelating").
		The images are large on purpose to show the effects of the format.
		If you've played with Bitmaps versus any other image formats, you might have noticed that the Bitmap format creates images that are a little heavy on the bytes.
	www.htmlgoodies.com /tutorials/web_graphics/article.php/3479931 (3802 words)

	PPM Image Format
		The portable pixmap format is a lowest common denominator color image file format.
		Programs that read this format should be as lenient as possible, accepting anything that looks remotely like a pixmap.
		Note that this raw format can only be used for maxvals less than or equal to 255.
	www.cse.ohio-state.edu /~parent/classes/681/ppm/ppm-man.html (392 words)

	FITS Image Viewer Page
		Developers of new image display programs should be aware of the special requirements for effectively displaying FITS images.
		Image viewers for PC and Macs - a fairly complete listing of commercial and freeware image processing software compiled by the Astronomy Education Committee.
		Hence an algorithm designed to render two-dimensional images will be capable of displaying a three- or four-dimensional FITS array when one or two of the axes consist of a single pixel.
	fits.gsfc.nasa.gov /fits_viewer.html (873 words)

	Choosing an Image File Format (Site not responding. Last check: 2007-10-16)
		This is a compressed BMP file format for images with less than 256 colors, but it is not often used.
		JPEG image files are typically much smaller than other file formats and are widely used for communicating images over the Internet.
		An excellent choice for images that will be used on the Internet; where file size must be kept small at the cost of image quality.
	www.techsmith.com /products/snagit/tutorials/choosenamingoption.asp (1644 words)

	Medical Image Format FAQ, Part 1/8
		Most file formats based on this scheme are just concatenated series of tags, and apart from having to guess the byte order, which is not specified (unlike TIFF which is a similar deal for those in the "real" imaging world), and sometimes skip a fixed length but short header, are dead easy to handle.
		In other words, if an image is 256 by 256, uncompressed, and 12-16 bits deep (and hence usually, though not always, stored as two bytes per pixel), then we all know that the file is going to contain 2562562=131072 bytes of pixel data at the end of the file.
		This message format is important to many people, not because anyone seriously wants to connect devices in the limited fashion envisaged by these early standards, but because many proprietary formats and other de facto standards have adopted the ACR/NEMA message format and its corresponding data dictionary and extension mechanisms.
	www.faqs.org /faqs/medical-image-faq/part1 (2704 words)

	YourTotalSite.com / Which Image Format is Best
		On the web today there are three main image format types to choose from and all have their advantages and disadvantages.
		When the image is read in this way, a user with a slower internet connection may be able to understand or read the image before it has fully loaded.
		JPEG uses a lossy compression which means that image quality is lost in the process of compressing the image.
	www.yourtotalsite.com /archives/miscellaneous/which_image_format_is_bes/Default.aspx (1063 words)

	ARIBIB Image Format (Site not responding. Last check: 2007-10-16)
		For the AJB volumes with the literature for 1918 to 1953, the links given in the image format do not show at present the desired page but only a message that this page is not accessible for external users.
		As long as the image of such a page is not accessible, the user has to inspect the printed version of the AJB.
		Those who would like to test the image format, may use as examples the query 'Wielen 1968' or 'Schwarzschild AJB 1899'.
	www.ari.uni-heidelberg.de /aribib/pformat.htm (223 words)

	PPM Format Specification
		Furthermore, the format allows very little information about the image besides basic color, which means you may have to couple a file in this format with other independent information to get any decent use out of it.
		The pixels in the image are square and contiguous.
		A value of Maxval for all three samples represents CIE D65 white and the most intense color in the color universe of which the image is part (the color universe is all the colors in all images to which this image might be compared).
	netpbm.sourceforge.net /doc/ppm.html (906 words)

	QTVR image file format
		See also “Import image file formats” and “Export image file formats” in this chapter for tables comparing the different image formats.
		1] QuickTime [2] data format that provides for panoramic images. The QuickTime viewer from Apple displays a segment of a panoramic image, re-projecting the image to have conventional perspective. By click-dragging on the image, you can look around as though you were standing in the middle of the scene.
		QTVR images can contain hotspots. These are areas on the image that do something when you click on them. For more information, see “Adding hotspots to your panoramas” in Chapter 7, “Making a virtual tour.”
	www.panoramafactory.com /help/hid_qtvr.html (1039 words)

	IMG Format Comparison
		Images that regularly fall into this category are logos, text as graphics, basically anything that has distinct "areas" that are one color.
		So an image with horizontal strips (American Flag) could be a very small file while the same image turned 90 degrees could occupy 10 or 20 times as much space.
		Any image which needs to be edited in during more than one session should not be saved as a.jpg until the editing is complete.
	philip.greenspun.com /wtr/img-format (1146 words)

	PTViewer image file format
		PTViewer displays a segment of a panoramic image, re-projecting the image to have conventional perspective. By click-dragging on the image, you can look around as though you were standing in the middle of the scene.
		Saving an image in PTViewer format actually creates two files: a JPEG image and a web page (HTML file). It is not possible to create a PTViewer image without the web page.
		When The Panorama Factory exports an image for PTViewer, it tries to copy ptviewer.jar (and possibly also ptviewer.class) from its application folder to the folder into which you are exporting. This enables your web browser to find the JAR file when you view a web page.
	www.panoramafactory.com /help/hid_ptviewer.html (1260 words)

	When and how to use internet image formats
		That is, when you save an image as a JPEG file, not all of the information in the original image is preserved.
		If you stick to 8 bit PNG images however, almost every browser that is in use today will be able to handle them just fine, so you have no reason not to use them on your website or as a replacement for.gif files to save bandwidth (more on that later).
		But enough rambling about browsers: PNG is the image format to use for line art, text, screenshots of Windows, general web graphics and "comic strip" style art.
	www.r1ch.net /img-formats (1867 words)

	Intro to PNG Features
		Each horizontal line in the image can have one of five filter types associated with it; choosing which of the five to use for each line is almost more of a fl art than a science.
		A PNG alpha-palette image is just that: an image whose palette also has alpha information associated with it, not a palette image with a full alpha mask.
		No detail was too small for consideration in the authors' quest for a near-perfect image format; yea, verily, even the acronym and pronunciation were major topics of discussion.
	www.libpng.org /pub/png/pngintro.html (3097 words)

	Graphics file format -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-16)
		The ART format holds a single still (An iconic mental representation) image that has been highly (additional info and facts about compressed) compressed.
		Native format for the (Disability of walking due to crippling of the legs or feet) GIMP.
		Supported by many (Electrostatic printer that focuses a laser beam to form images that are transferred to paper electrostatically) laser printers.
	www.absoluteastronomy.com /encyclopedia/g/gr/graphics_file_format.htm (1614 words)

	The Unofficial TIFF Home Page
		The online PDF formatted TIFF 6.0 Specification is available from Adobe in their Technical Notes for Developers Section; you will need an Adobe Acrobat Viewer to read this, also freely available from Adobe.
		Yep; Unisys holds a patent on the compression algorithm, which is the same as the one used in Compuserve's GIF format.
		Kodak has several file formats in use which are more or less based on the TIFF spec (though not always complying with the strict rules).
	home.earthlink.net /~ritter/tiff (2008 words)

	The TIFF Image File Format (Site not responding. Last check: 2007-10-16)
		ImageWidth and Image Length describe the dimensions of the image to be written to the specified TIFF file.
		All images, whether gray scale or color, regardless of the number of colors or gray levels, will be written out as a "palette" format TIFF file.
		After the image is displayed, all memory allocated by this function is freed, and the TIFF file is closed.
	www.ee.cooper.edu /courses/course_pages/past_courses/EE458/TIFF (5221 words)

	Encyclopedia article on Tagged Image File Format [EncycloZine] (Site not responding. Last check: 2007-10-16)
		TIFF has become the de facto standard graphics format for high color depth (32-bit) graphics, is widely used in image manipulation applications such as Photoshop, DTP, and scanning, and can be directly manipulated by PostScript.
		TIFF includes a number of options that can be used to include all sorts of image formats in the file; this is the purpose of the "tags" that are included in the header.
		Many of these tags indicate the simple geometry of the image, like its size, but others define how the data is arranged and various compression options.
	encyclozine.com /TIFF (418 words)

	JPEG? GIF? TIFF? The image format blues (Site not responding. Last check: 2007-10-16)
		GIFs are ideal for images that have a lot of sharp edges -- for anything that has text (letters and numbers) in it, for example.
		So any image format that can't show more than 256 colors is a bozo when it comes to photographs.
		To be fair to all seven Mac users in the world, TIFF is the default image format for professional and semi-professional image processing and editing.
	aroundcny.com /technofile/texts/picfmt103001.html (2533 words)

	XPM (image Format) Encyclopedia Article, Definition, History, Biography (Site not responding. Last check: 2007-10-16)
		Find xpm image format - Your relevant result is a click away!
		XPM (X PixMap) is an ASCII image format used by the X Window System.
		It was created in 1989 by Daniel Dardailler and Colas Nahaboo working at the INRIA, France, and was later enhanced by Arnaud Le Hors.
	artisticnudity.com /encyclopedia/XPM_(image_format) (288 words)

	PNG (Portable Network Graphics) Home Site
		Our hero likes to speak of himself in the third person, but don't let that put you off; this is intended to be a mostly serious set of reference pages for locating information, applications and code related to the ten-year-old PNG image format.
		PNG (pronounced "ping") is the Portable Network Graphics format, a format for storing bitmapped (raster) images on computers.
		MNG is officially complete (version 1.0 of the MNG specification was released on 31 January 2001), with quite a number of applications available and a free reference library, too.
	www.libpng.org /pub/png (1162 words)

	Converting .ART Image Format Using AOL Format (page9) (Site not responding. Last check: 2007-10-16)
		If you were using AOL, and intentionally or unintentionally downloaded an image from a World Wide Web site with the extension.ART, you may need to convert the image to a different format in order to use it.
		It is quick and easy to convert the image to BMP, or JPG format using AOL.
		Internet Explorer 4.0 and higher can also read.ART format images and can be used to convert them to BMP format.
	members.aol.com /oldnelly77/page9.htm (230 words)

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