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Topic: Interlace (bitmaps)

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	Interlace - Wikipedia, the free encyclopedia
		Interlacing is a method of displaying images on a raster-scanned display device, such as a cathode ray tube (CRT), in which the display alternates between drawing the even-numbered lines and the odd-numbered lines of each frame.
		The combination of interlacing with block-based compression technique inherits all the drawbacks of the interlacing, while also reducing the efficiency of block-based compression.
		Interlacing is still being included in new digital video transmission formats, such as DV, DVB (including its HD modifications), and ATSC.
	en.wikipedia.org /wiki/Interlace (1942 words)

	Adam7 algorithm - Wikipedia, the free encyclopedia
		Adam7 is the interlacing algorithm specified for use in PNG images.
		Adam7 is a 2D interlacing scheme, unlike the 1D scheme used in an interlaced GIF.
		This means the perceived quality of the image and the readablity of text in the image rises much faster in the early passes than with GIF interlacing (demo animation).
	en.wikipedia.org /wiki/Adam7_algorithm (196 words)

	Files and Formats
		BMP is the native bitmap file format of the Microsoft Windows environment.
		Bitmaps are the simplest form of raster image available and there are many variations.
		Bitmaps are relatively ungainly and resize fairly poorly.
	wwwfac.worcester.edu /iad/files_and_formats.htm (286 words)

	Halftoning in a hyperacuity printer - Patent 5410414
		5, the interlace formatter is basically a duplication of the y components in the phase/resolution controller with an offset to allow each channel to access the FIFO raster data at a point in the data which matches the channel's beam position in the two channel system of this example.
		The interlace formatter described herein has the the ability to map any interlace factor into any set of rasters that are in the memory.
		For equally spaced, non-overlapped, interlace scanning, the interlace factor/is the distance between adjacent scans laid down by a single facet of the polygon divided by the distance between adjacent, interlaced scans.
	www.freepatentsonline.com /5410414.html (15678 words)

	Image Formats
		Bitmaps saved at 24 bits-per-pixel are great quality images, but of course they also run about a megabyte per picture.
		Bitmaps are perfect for this process because they're a simple series of colored dots.
		Interlacing is the concept of filling in every other line of data, then going back to the top and doing it all again, filling in the lines you skipped.
	www.cisteach.com /html/image_formats.html (3147 words)

	SGI TPL (IRIX 6.5: Developer/OpenGLonSGI - Chapter 10. Imaging Extensions)
		The steps after interlacing are shown in more detail than the ones before to allow the diagram to include pixel texture.
		When interlacing is enabled, all the groups that belong to a row m are treated as if they belonged to the row 2×μ.
		One application of the interlace extension is to use it together with the copy texture extension.
	techpubs.sgi.com /library/tpl/cgi-bin/getdoc.cgi?coll=0650&db=bks&fname=/SGI_Developer/OpenGLonSGI/ch10.html (4490 words)

	[Mono-winforms-list] libgdiplus/System.Drawing patch: native support for indexed Bitmaps
		Bitmaps with a 4bpp indexed pixel format will be given 256-entry ColorPalette structures, as the cairo_format indicates 8-bit data.
		LockBits() and UnlockBits() were haxed to make this transparent with respect to the 24-bit RGB pixel format (which was officially supported), but all of the image codecs could simply assume that the data was 32-bit RGB for the purposes of interfacing with underlying libraries and saving.
		Bitmaps with a 4bpp indexed pixel format will be + given 256-entry ColorPalette structures, as the cairo_format + indicates 8-bit data.
	lists.ximian.com /archives/public/mono-winforms-list/2005-March/001466.html (3702 words)

	Learn HTML How to alter images with a Painting Program - 2
		When saving GIF type bitmaps and you want parts of the image to be transparent displaying the background, your painting program has to have the GIF version gif89a export filter installed.
		It is advisable under most circumstances to also select 'Interlace' so that the image will gradually build bit by bit in the browser, allowing the viewer to see what is coming on slow Internet connections.
		Once the image is changed to a colour depth of 256 colours or less select Colour Picker Tool (eye dropper) and place the cursor carefully over the white pixels in one of the corner of the image.
	www.dtp-aus.com /how-to2.htm (2182 words)

	All About Stereo Photography
		Interlacing was used on early computers (and TVs) to create images while using little bandwidth.
		When stereoscopic images are interlaced, the odd and even scan lines are used to display the left and right images.
		Because computer display manufacturers dropped interlace mode in the 1980's, these devices require special 'device drivers' supplied by the LCD glasses supplier.
	www.shortcourses.com /how/stereo/stereoimages.htm (3196 words)

	[No title]
		As the video-rams and the bitmap just need a small part for displaying the picture, the sprites can be put into the spare parts of the video-rams and the bitmap.
		Interlace Until now we had the normal Super Hires FLI mode, supplying the basics for interlace.
		On chars 9 and 10 we could just use 2 different colors (respectively 4 mix-colors for interlace) on the height of 21 textlines in the bitmap, as the FLI effect starts from Char 14 and before that no new data (colors in this case) are read from the video-ram.
	www.jbrain.com /pub/cbm/services/GEnie/Library33/discovery3-b.txt (15038 words)

	Video signal processing system - Patent 6714256
		In a preferred embodiment, the first memory is configured as a fast cache memory and the second memory as working memory in the form of a random access memory.
		In parallel with this, the graphic data (e.g., bitmaps) for example from a microprocessor (not shown), are written via the fast intermediate memory 13 into the external memory 16.
		With interlace progressive conversion, a full picture with 576 lines is calculated by the vertical filter 22 from two half pictures, each with 288 lines.
	www.freepatentsonline.com /6714256.html (3017 words)

	Free Bitmap Downloads
		The button can be colored or textured using a bitmap image, then text extrusion, outline, and altitude specified, and an optional drop shadow included.
		Interlace can be viewed as it appears on the Internet.
		Save faxes as standard Windows Bitmap or multi-page TIF files so that they can be converted to editable text with your Optical Character Recognition (OCR) program.
	www.filesweb.com /b/bitmap/software2.html (1534 words)

	Graphics File Formats FAQ (Part 1 of 4): General Graphics Format Questions
		Interlaced GIFs are used to give the user a idea of that an image looks like before all of the bitmapped data has been received.
		The lines of the same 16-line bitmap in an interlaced GIF would be stored as 0, 8, 4, 12, 2, 6, 10, 14, 1, 3, 5, 7, 9, 11, 13, 15.
		For example, a bitmap with 4-bit pixels will be encoded with an LZW code table initially containing 18 entries: 16 color indicies ranging from 00000 to 01111, a clear code (10000), and a end-of-data code (10001).
	www.faqs.org /faqs/graphics/fileformats-faq/part1 (11966 words)

	Publishing Flash documents
		For Dimensions, enter a Width and Height in pixels for the exported bitmap image, or select Match Movie to make the GIF the same size as the Flash movie and maintain the aspect ratio of your original image.
		An interlaced GIF provides the user with basic graphic content before the file has completely downloaded and may download faster over a slow network connection.
		Smooth applies anti-aliasing to an exported bitmap to produce a higher-quality bitmap image and improve text display quality.
	www.pdesigner.net /Flash_MX_Tutorials/20_publish11.html (1025 words)

	Chapter 9. Imaging Extensions
		This section discusses where extensions are in the OpenGL imaging pipeline; it also lists the commands that may be affected by one of the imaging extensions.
		Figure 9-4 shows where interlacing (see “SGIX_interlace—The Interlace Extension”) and pixel texture (see “SGIX_pixel_texture—The Pixel Texture Extension”) are applied in the pixel pipeline.
		When enabled, a color lookup table is applied to all RGBA pixel groups, regardless of the command that they are associated with.
	www.cepba.upc.es /docs/sgi_doc/SGI_Developer/books/OpenGLonSGI/sgi_html/ch09.html (4612 words)

	DiskSuite Questions and Answers (Site not responding. Last check: 2007-10-09)
		For striping, the first interlace's worth of blocks (defaulting to 16 Kbytes in Solstice DiskSuite 4.1) is read from the first slice, then the first interlace's worth of blocks is read from the second slice, and so on.
		The bitmaps cannot be turned off, to ensure that optimized resyncs are done for reboots.
		Resync region bitmap records are sprinkled among the available replicas in a balanced fashion.
	web.ics.purdue.edu /~sh/SDS/faq.html (4892 words)

	GranTurismoX.net :: View topic - GT4 Photo Mode (56k Warning) (Site not responding. Last check: 2007-10-09)
		But if the game is using 50/60 frames a second without interlace then the vertical resolution is halved.
		It is used to tell the GS whether to display in interlace or non-interlace mode.
		Interlace flicker was so tight a casual viewer wouldn't see it in GT1's normal mode, but in HiFi it was absolutely undetectable, or at least to me it never was.
	www.granturismox.net /forum/viewtopic.php?t=4027 (2239 words)

	Microsoft Office Assistance: About using graphics in your Web pages (Site not responding. Last check: 2007-10-09)
		An interlaced GIF appears first with poor resolution and then improves until the entire image arrives.
		BMP The native bitmap format of the Microsoft Windows environment is a picture made from a series of small dots and it supports images up to 24 bits.
		By contrast, bitmapped graphics (also called raster graphics) are stored as a collection of pixels.), and Encapsulated PostScript (EPS) data.
	office.microsoft.com /en-gb/assistance/HP052702701033.aspx (949 words)

	Video University: Video University Forums: Wedding & Event Videography: Stills in Premiere 6.5
		Bitmaps are the closest resolution i think to the 72dpi of video.
		Keep in mind DE-INTERLACE all your frame grabs in photoshop so you wont have any gitter on playback in your nle.
		yeah, i have pretty much narrowed it down to bitmap or tiff...
	www.videouniversity.com /forums/gforum.cgi?post=93600 (617 words)

	Web Graphics Glossary, Graphical Terms, Image Word Meanings, Graphica Sesign Dictionary, Web-Wise-Wizard (Site not responding. Last check: 2007-10-09)
		Text that gives an alternate description of an image which is used by browsers that are unable to display images, or when the image display has been disabled.
		Anti-aliasing is a technique used in graphics construction to minimise the 'jaggies' that you can see on lines that are not perpendicular or horizontal.
		If an image is interlaced it is loaded on-screen in it's entirety, starting at a low resolution.
	www.web-wise-wizard.com /web-graphics-design/web-graphics-design-glossary-dictionary.html (1050 words)

	GIF publish settings (Site not responding. Last check: 2007-10-09)
		Dimensions Sets the size of the exported bitmap image to the number of pixels you enter in the Width and Height fields.
		Smooth enables or disables anti-aliasing in the exported bitmap.
		Interlace makes the exported GIF display in a browser incrementally as it downloads.
	www.oduv.ru /doc/Flash4/13publish7.html (1043 words)

	[No title]
		We are currently using 4-bits per pixel to minimize the transfer of bitmap pixels, but 24 bit or 16-bit values are common pixel formats.
		This is an inefficient way of transferring the pixels of the bitmap because for every change the protocol transfers the complete image.
		Device Independent Bitmaps (DIBs) offer a means to manipulate and display bitmaps in a form that is independent of the current display setting of your computer.
	www.ece.arizona.edu /~prakash/dacp/Docs/HDT2.doc (3119 words)

	Glossary - Resources - Computing Support - Service Desk - Cal Poly
		As its name suggests, a bitmap is a map of dots—similar to what you see when you look at a newspaper photo under a strong magnifying glass—that looks like a picture when viewed from a distance.
		Bitmaps come in many file formats (GIF, JPEG, TIFF, BMP, PICT, and PCX, to name a few) and can be read by paint programs and image editors such as Adobe Potoshop.
		But because early television tubes couldn’t draw the whole screen before the top began to fade, TV engineers implemented a system called interlacing, which skips every second line on the first pass and fills in those lines on a second pass.
	www.servicedesk.calpoly.edu /computing_support/resources/glossary.html (9320 words)

	[No title]
		'1' bits in the bitmap are expanded to this color.
		'0' bits in the bitmap are expanded to this color.
		When set enables expansion from monochrome bitmaps to full color using 3C4h index 24h and 25h as fore- and background colors.
	www-2.cs.cmu.edu /afs/cs.cmu.edu/project/clisp/hackers/wlott/work/pcstuff/vgadoc/ncr.txt (1687 words)

	Piranesi Discussion Board
		In the versions of Photoshop I have, I only see the Interlace dialog for Save As in png format, and both choices work.
		And the thumbnail can be updated by selecting the style in the style browser and using Edit->Update Bitmaps on the style browser menu.
		I guessed at how to fill these in, but Piranesi says the information in the file is flawed.
	www.informatix.co.uk /discus/messages/1/348.html?1075838645 (586 words)

	Nicky Pages' Digital Solutions (Site not responding. Last check: 2007-10-09)
		More specifically that is one uncompressed bitmap image for every frame along with a Wave file played in time to it.
		As you know the quality of JPEG is almost as good as Bitmaps but very highly compressed.
		I have explained the problem of interlace in great detail Here.
	nickyguides.digital-digest.com /video-capture.htm (2684 words)

	[No title] (Site not responding. Last check: 2007-10-09)
		command merely checks that the image bitmap could be extracted from the file.
		The format for the output bitmaps is hexadecimal, with each pixel presented as a triple -- for instance [red green blue].
		This means that paletted images et cetera will have their bitmaps expanded before display.
	www.stillhq.com /extracted/pngtools/pnginfo.c (346 words)

	Professional Draw 2.0
		Trace converts an IFF bitmap file into a structured clip suitable for import into Professional Draw.
		Professional Draw 2.0 now offers a menu item that easily aligns text with curves, a task that was sheer torture with the original program.
		If you want a wider variety of outline fonts, you'll have to invest in one of Gold Disk's Compugraphic outline fonts packages, which come with a utility called CreateFont that converts Compugraphic into a format acceptable to Professional Draw.
	www.atarimagazines.com /compute/issue128/94_Professional_Draw_2.php (431 words)

	[No title]
		If the mode you selected in ScreenMode prefs is not available when the Workbench screen is opened, CyberGraphX tries to find a replacement mode.
		Changes for 41.5 (r58 archive) - cgxvideo.library does not allow to create overlay on interlace screens anymore - Fixed problem with wrong mousepointer colours when overlay was enabled.
		Requires at least cgxsystem.library 41.19 Changes for 2.9 (r69f archive) - modified MOVE16 bitmap swap in/out code to workaround a bug in certain 040 accelerator cards.
	de4.aminet.net /biz/p5/cgxv41_r70a.readme (1672 words)

	PCbuilder (Site not responding. Last check: 2007-10-09)
		Interlaced / Non-interlaced – How the CRT draws the image.
		Colour Depth – the amount of colours that can be displayed.
		If each colour has 8 possible bitmaps, or shades shall we say, then 8 bitmaps of red times 8 bitmaps of green times 8 bitmaps of blue equals = possible 256 colour shades = 24 bit colour.
	www.redbrick.dcu.ie /~pcb/components/monitor.shtml (501 words)

	Learn HTML GIFs (Site not responding. Last check: 2007-10-09)
		There are actually two GIF formats, the original GIF87 and GIF89a which added transparency and interlacing.
		Interlaced images will quickly paint a blocky picture based on every eighth scan line and then improve it as the intervening lines are received.
		WebImage and LView Pro for PCs and Graphic Converter for MACs are three good programs that can be used to manipulate GIFs, select the transparent color, interlace or convert other formats such as bitmaps into GIFs.
	www.ida.net /users/pbmck/learn/42gif.htm (218 words)

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