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Topic: Colour component

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	Colour Manipulation
		Colours are generally represented as triples of coordinates, representing red, green, and blue components.
		Each colour component is usually either a real value in the range zero to one, or an integral value in the range zero to 255.
		This is used to convert colour to gray-scale.
	www.bic.mni.mcgill.ca /~david/bicpl/section2_9_1.html (591 words)

	Hi Fi Writer - Video cabling standards
		When colour was introduced, in order to avoid making those millions of B&W TVs obsolete, it was decided to keep the luminence signal as it was and encode the colour information in a different way so that it would simply be ignored by B&W TVs.
		This is converted to component, then down-converted to S-Video, then further down-converted to composite, then radio frequency modulated for transmission, then, when it gets to your home, RF demodulated, upconverted to S-Video, then further up-converted to component video, then converted to RGB ready to fire the guns at the back of your TV.
		Notice the clear rendition of the colours in the vertical bars on the component shot and the relative muddiness on the S-Video shot.
	www.hifi-writer.com /he/video (1175 words)

	Colour Ramping for Data Visualisation
		This note introduces the most commonly used colour ramps for mapping colours onto a range of scalar values as is often required in data visualisation.
		The most basic mapping of some scalar value to a colour ramp is to use either an intensity ramp from fl to a single colour or use the greyscale ramp from fl to white.
		On the colour cube this is a diagonal line between the two opposite corners, the red, green, blue components are all the same.
	astronomy.swin.edu.au /~pbourke/colour/colourramp (527 words)

	WebHints: Image Mechanics: Colours
		The scale of each component colour can vary depending on your video hardware, but for the purposes of discussion, it's safe to assume that the each component colour is selected from an 8-bit range of [0,255] or a 16-bit range of [0,65535].
		This usually means a colour table whose entries have been constructed to provide a uniform spread of colours across the three RGB dimensions.
		Although colour tables of many different sizes are possible, the three most commonly used sizes are 2 colours (fl and white), 256 colours, and "millions" of colours (which usually means three 8-bit values per colour and doesn't involve a colour table at all).
	www.ross.net /webhints/colours.html (760 words)

	Adjusting image colour saturation
		Generally, when dealing with images, the range of colour saturation which is normally expressed as a number in the range zero to one, maybe adjusted from a gray scale to just the amount of colour present in the original image.
		It is possible however to force colour saturation of images to values greater than one which tends to "beef up" the colour of an image.
		The reciprocal of the saturation value is multiplied by the effective luminance of the colour component to produce a value by which each colour component of each pixel is multiplied during the matrix operation.
	www.bobpowell.net /imagesaturation.htm (335 words)

	ColorRampGenerator (j3d.org Code Library)
		Create a new colour ramp generator that uses the given heights and 3 component colour values for that height for the interpolation.
		Create a new colour ramp generator that uses the given heights and 4 component colour values for that height for the interpolation.
		Create a new colour ramp generator that uses the given heights and colour values for that height for the interpolation.
	www.math.nyu.edu /~meyersr/links/j3d/org/j3d/geom/terrain/ColorRampGenerator.html (845 words)

	Felgall Javascript - Colour Selection
		Selecting a suitable colour combination may be difficult, particularly if you are not properly familiar with the way that colours need to be defined to web pages.
		These colours are defined to your web page using a special seven character code that starts with # and is then followed by two characters representing the red component of the colour, two characters representing the green component, and finally two characters representing the blue component.
		Each of these three components can have any of 256 different values representing the "strength" of that component colour within the final colour.
	www.felgall.com /jstip53.htm (235 words)

	Colour metric (Site not responding. Last check: 2007-10-23)
		Colour perception is a difficult and little understood problem, which seems to defy even the most ingenious mathematical expressions.
		When researching the implementation of colour quantization algorithms, I stumbled more than once on theoretical discussions that were difficult to follow, and sometimes nearly impossible to verify (or to reject, for that matter).
		colour 24, and the tester chooses the closest colour from the remaining 63 palette entries.
	www.compuphase.com /cmetric.htm (2925 words)

	STAR COLOURS
		This is caused by the colour contrast as seen by the eye and is comparable to looking at stars, for example, during darkness as compared to either twilight or daylight (as the background).
		Most colour blindness is cause by a defect in a specific gene that causes in the eye by either the red or green cones called protanopia, or the less frequently known blue cone defect known as deuteranopia.
		If the colour degradation were 25%, for example, and then say some million photons were received in one second of time during daylight hours, the loss of light would be of little consequence as there is enough light available for colour discrimination.
	www.geocities.com /ariane1au/Page029b.htm (5635 words)

	RuG/L04 - Manuals - maprgb (Site not responding. Last check: 2007-10-23)
		The colours are set in a vectorfile which must have vectors of size 3 (for instance, created by running the program mds in 3 dimensions).
		The values in the vectorfile are used as red, green, and blue colour components.
		By default, all three vector dimensions are scaled separately to map onto the full range of its colour component, even if the range of values in one vector dimension is much smaller than in another dimension.
	www.let.rug.nl /~kleiweg/L04/Manuals/maprgb.html (200 words)

	delphiDabbler.com: Colour Pop-up Menu Component - Enables colours to be selected from a pop-up menu
		The colour menu component, TPJColourPopupMenu, is a freeware non-visual component that descends from TPopupMenu.
		However, it is easy to provide names in other languages or use Delphi colour identifiers etc. This is done by handling one of the component's events.
		A component editor (accessed from a mouse menu when the component is selected) that gives easy access to all the component's main properties.
	www.delphidabbler.com /software?id=cmenu (276 words)

	Topfield component colour problem? - DTV Forum Australia (Site not responding. Last check: 2007-10-23)
		The colours are too bright (too red really)and I get some banding especially from the new channel in Tas when they show the scenes from around Tasmania.
		He has a plasma screen at the showroom which I think has component inputs, and if he can get one of the same adaptors as yours he should be able to readily reproduce the problem.
		Component output is a pretty big selling point for a lot of customers, so this had better get resolved quickly I think.
	www.dtvforum.info /index.php?showtopic=2750 (842 words)

	JUCE
		Returns a colour that is the result of alpha-compositing a new colour over this one.
		The new colour's hue is ((this->getHue() + amountToRotate) % 1.0)
		The new colour's saturation is (this->getSaturation() * multiplier) (the result is clipped to legal limits).
	www.rawmaterialsoftware.com /juce/api/classColour.html (1098 words)

	A Beginners Guide to Bitmaps
		In each component the value of 0 refers to no contribution of that colour, 255 refers to fully saturated contribution of that colour.
		Interesting colouring and animation effects can be achieved by simply modifying the palette, this immediately changes the appearance of the bitmap and with careful design can lead to intentional changes in the visual appearance of the bitmap.
		Converting high colour depth images to low colour depth representations is no different in concept, generally the process is just done three times, one for each colour component.
	astronomy.swin.edu.au /pbourke/dataformats/bitmaps (2500 words)

	SFColorRGBA (Xj3D Code Library)
		Colour values are represented as floating point numbers between [0 - 1] as per the VRML IS specification Section 4.4.5 Standard units and coordinate system.
		Write the value of the colour to the given array.
		Colour values are required to be in the range [0-1].
	www.xj3d.org /javadoc/org/web3d/x3d/sai/SFColorRGBA.html (163 words)

	JUCE
		If this thickness is > 0, a line of the specified colour will be drawn around the three sides of the content component which don't touch the tab-bar, and the content component will be inset by this amount.
		The component passed in will be shown for the tab, and if deleteComponentWhenNotNeeded is true, it will be deleted when the tab is removed or when this object is deleted.
		Be sure not to use or delete the components that are returned, as this may interfere with the TabbedComponent's use of them.
	www.rawmaterialsoftware.com /juce/api/classTabbedComponent.html (599 words)

	Some Private Use Area code points for courtyard codes for text colour.
		Colour changing is by a specially devised method which will hopefully be efficient in practice.
		Upon receiving one of the 18 codes to change colour, the system presumes on a temporary basis that the new colour is to become the foreground colour, which is what it will usually be.
		If a command to set one of the other four colours is received, then the foreground colour is used for that purpose, with the foreground colour being replaced by the previous foreground colour.
	www.users.globalnet.co.uk /~ngo/courtcol.htm (280 words)

	Delphi Pages
		Colour on a computer screen are created by mixing light intensities of the 3 basic light colours: Red, Green and Blue.
		When working with colouring algorithms, it helps to have your screen set to the highest available scheme, preferably 32 or 24 bit so that your colour results are accurate when viewed.
		This is sometimes referred to as Alpha blending, though true Alpha blending is done according to an intensity map, which is a bitmap with 1 byte for each pixel specifiying the intensity of the primary and secondary color in that point.
	www.delphipages.com /tips/thread.cfm?ID=302 (887 words)

	MFColor (Xj3D Code Library)
		Colour values are represented as floating point numbers between [0 - 1] as per the X3D IS specification Section 4.4.5 Standard units and coordinate system
		Input is an array of colour values in RGB order [n, n+1, n+2].
		Colour values outside of this range will generate an IllegalArgumentException.
	www.xj3d.org /javadoc/org/web3d/x3d/sai/MFColor.html (741 words)

	Using Colour
		Colour is widely used in many HTML contexts.
		Colour for each red, green and blue colour component is represented by a range 0 to 255 decimal (FF hex) where
		Colour names might be easier to remember but you only have a restricted choice compared with several million possible colours possible with hexadecimal representation.
	www.cs.cf.ac.uk /Dave/Internet/node333.html (320 words)

	1 JPEG Overview (Site not responding. Last check: 2007-10-23)
		As was mentioned previously brightness and colour separation in the YCbCr colour scheme is beneficial for JPEG as the two quantities have different perceptions in the human eye.
		Hence two different quantisation factor tables are generally defined for colour images, one for the Y (or brightness) component, and one for the Cb and Cr components (or chrominance).
		In the special case of the first 8x8 pixel section of the component being processed, the DIFF is assigned the value of the current DC coefficient value (ie the previous section DC coefficient is zero).
	murray.newcastle.edu.au /users/students/2000/c9425349/section3.htm (4500 words)

	class PColour (Site not responding. Last check: 2007-10-23)
		Determine if the two colours are the same, ie have the save values for all of the components.
		This class allows for the representation of an arbitrary colour which may not be able to be realised on the particular drawing canvas.
		It is up the application and its colour needs to determine if simply using the PColour or translating it to a PRealColour first is required.
	www.openh323.org /docs/PWLib/PColour.html (595 words)

	User Macro Document - blendy_tubes
		The Colour Component node data is mapped appropriately to each node of the cross section.
		Specifies which of the components of node data should be used to colour map each section of the tube.
		Output field containing a Mesh with a Quad cell_set that forms the generated tubes and one scalar node data component that is used for colour mapping the tubes.
	www.iavsc.org /repository/express/pages/blndtube/blndtube.shtml (891 words)

	moock.org>> asdg>> technotes>> skinning the V2 ProgressBar component
		Setting a component's styles means using code to change the component's colour and font without changing its graphics.
		For example, the variable-width "load bar" section of the ProgressBar component shown in Figures 1, 2, and 3, is produced by stretching a thin graphic between the left and right side of the component.
		To skin a component in a new document, we simply copy the component's skin movie clips from one of the supplied themes into the new document, then alter the graphics as desired.
	moock.org /asdg/technotes/skinningV2ProgressBar (4519 words)

	Digital Artifacts – The Colour Gremlins
		There appears to be lines of distinction between areas of colour contrast.
		You’ll notice that the color blend mode will only affect the colour component to the image, not the detail in the luminosity.
		The result rids your image of the Colour Gremlins leaving your image with more accurate colour and the ability to manipulate it effectively.
	www.luminous-landscape.com /tutorials/color-gremlins.shtml (380 words)

	METHOD OF AND APPARATUS FOR SCRAMBLING A VIDEO SIGNAL WITH NETWORK TRANSMISSION AND RECORDING CAPABILITY (EP0775419B1) (Site not responding. Last check: 2007-10-23)
		In the scrambling portion, component or composite video (12) is decoded (14) into a luminance component (18) and its two color components (20, 22).
		The randomly switched color component signals (30, 36) may be encoded (38) together with the luminance signal (18) to produce a component or composite video signal (40) that is scrambled.
		The luminance component (96) as well as the two descrambled color components (108, 110) are then encoded (114) to produce a component or composite video (112) with the relationship between the color components restored to their respective original positions in the video signal.
	www.delphion.com /details?&pn=EP00775419B1 (481 words)

	Any-Colour Fade Technique - Lachy’s Log (Site not responding. Last check: 2007-10-23)
		For a project I’m working on at the moment, the client wanted various colours to fade appropriately, and I needed a script that was not only generic in the colours it supported, but incredibly easy to reuse.
		You pass it the colour you wish to blend with and the number of steps it should take, and it returns a pallet of colours for all the steps.
		I made a colour fading demo just to show off how powerful and easy to use the script is. Enter any supported colour value and watch the background colour fade from the current colour to the new colour.
	lachy.id.au /log/2005/11/colour-fade (488 words)

	[No title]
		A limitation of the signalling is that the number of bits per sample is assumed to be the same for each colour component.
		The primary use of these colour sampling modes is to enable efficient packing of data into small pixel groups ("pgroups").
		The most common use case is expected to be video with "depth=5", where the additional bit of colour depth for the marked component enables a single pixel to fit into two octets without padding.
	www.ietf.org /rfc/rfc4421.txt (787 words)

	Button Component Colour - ActionScript.org Forums
		I want to know if it is possible to change the overstate of this component button.
		Surely components are customisable, even to colour, I can't believe no one knows how to achieve this.
		If you want to change multiple properties, or change properties for multiple component instances, you should create a custom style format.
	www.actionscript.org /forums/showthread.php3?t=41902 (408 words)

	CMYK colour room
		Printer colors yellow, cyan and magenta are defined in a fashion which allows every colour component to precisely affect a component of the RGB colorspace.
		Images are accordingly stored in CMYK colour format as TIFF or JPEG files, or in a proprietary format designed for use specifically by that application.
		RWGetPixelRgb16 and RWSetPixelRgb16 support processing on the basis of RGB colour data that is to be converted automatically from/into the CMYK colourspace.
	www.herdsoft.com /ti/davincie/cmyk0yp7.htm (752 words)

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