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	The Discrete Cosine Transform (DCT)
		The DCT is similar to the discrete Fourier transform: it transforms a signal or image from the spatial domain to the frequency domain (Fig 7.8).
		F(u,v) is the DCT coefficient in row k1 and column k2 of the DCT matrix.
		The DCT input is an 8 by 8 array of integers.
	www.cs.cf.ac.uk /Dave/Multimedia/node231.html (401 words)

	DCT (Site not responding. Last check: 2007-11-07)
		In a manner very similar to the discrete Fourier transform (DFT), the DCT is a map from the spatial domain to the frequency domain.
		It is useful to compare the effect of the DCT to that of the FFT to various types of images.
		DCT by contrast uses all real numbers, so all information is contained in the magnitude plots.
	www.fuzzymonkey.org /projects/ece472_jpeg_encoding/DCT1.htm (330 words)

	DCT Civil Engineering Ltd
		DCT Civil Engineering Ltd is delighted to announce that it has been awarded a framework contract by Severn Trent Water Limited.
		The news is further evidence of DCT's excellent reputation in the water sector as a whole.
		DCT currently carries out construction work in the United Utilities, Yorkshire Water, Welsh Water and Scottish Water regions, and is also awaiting a decision by Northumbrian Water on their AMP4 framework.
	www.dct-civils.co.uk /newsresult.cfm?ID=13 (212 words)

	DCT Home (Site not responding. Last check: 2007-11-07)
		The Discovery Channel Telescope (DCT) is Lowell Observatory’s newest project to design and construct a powerful, 4.2-meter telescope 40 miles southeast of Flagstaff, Arizona at a site location known as Happy Jack.
		Unique to the DCT’s optical configuration is the ability to switch from an ultra wide-field (prime focus) imaging and surveying mode to a significantly longer focal length mode optimized for spectroscopy, infrared imaging, and other applications.
		When configured for prime focus imaging, the DCT, in a single exposure, will allow astronomers to survey an area of the sky equal to the size of 16 full moons, which greatly exceeds the capabilities of existing telescopes of its class.
	www.lowell.edu /DCT/index.html (314 words)

	The Enronization of American business Michigan auto supplier robs workers' wages, pensions, health benefits (Site not responding. Last check: 2007-11-07)
		DCT claims their financial troubles began in the summer of 2000 with the slump in the auto industry.
		In 1998—while DCT was failing to meet the terms of its loans to the pension fund and was pleading poverty—it spent $4.5 million to move its operations from Detroit to a former tank plant property in Warren, Michigan.
		DCT’s methods of accumulating large amounts of wealth in the hands of top executives have brought devastation to its workers as well as the surrounding communities where its facilities were located.
	www.wsws.org /articles/2002/apr2002/dct-a18.shtml (2244 words)

	sid ms 1.0 (Site not responding. Last check: 2007-11-07)
		The method treats each DCT coefficient as an approximation to the local response of a visual "channel." For a given quantization matrix, the DCT quantization errors are adjusted by contrast sensitivity, light adaptation, and contrast masking, and are pooled non-linearly over the blocks of the image.
		This means that threshold error in a particular DCT coefficient in a particular block of the image will be a function of the value of that coefficient in the original image.
		The strategy is to develop a very simple model of perceptual error, based upon DCT coefficients, and to iteratively estimate the quantization matrix which yields a designated perceptual error or bit-rate.
	vision.arc.nasa.gov /publications/aaia93abw/aaia93abw.html (2434 words)

	Iomega 1.5 GB DCT cartridge: Digital Photography Review
		DCT is aimed at OEM manufacturers and consists of a cartridge about the size of a half-dollar coin and weighs just 9 g (0.3 oz).
		The DCT cartridge, which is about the size of a half-dollar coin, weighs only 9 grams and employs a rugged stainless steel cartridge designed to protect important digital content from data loss, enabling truly mobile digital devices.
		Iomega is working with other innovative companies with the goal to integrate DCT technology into their future products, and is progressing on a DCT development timeline that would enable potential OEMs to bring DCT-integrated products to market in the second quarter of 2004.
	www.dpreview.com /news/0307/03072205iomegadct.asp (608 words)

	Race 2 Win: T.J. Bell to Drive for DCT Motorsports for the Rest of Season
		While running towards the front in many races, most notably are incredibly strong runs at Mexico City, Phoenix and Loudon earlier this season, Barrett and the DCT team have fought through some bad luck and problems not of their own making, and have struggled with securing full-time sponsorship.
		The McGills and DCT as a whole is more than a team to me — they are friends and this is something they talked with me about.
		DCT Motorsports was formed in 2003, running their first race in July of that year.
	www.race2win.net /gn/05/tjbdct.html (563 words)

	The Discrete Cosine Transform (DCT)
		FFT is the same as the DCT except for the half-sample phase shift in the
		In practice, the DCT is implemented using the same basic efficiency techniques as the FFT.
		Euler's identity, expand the cosine in the DCT defined by Eq.
	www-ccrma.stanford.edu /~jos/examples/Discrete_Cosine_Transform_DCT.html (174 words)

	DCT (Site not responding. Last check: 2007-11-07)
		The DCT being a linear unitary transform is distributive over matrix multiplication.
		Hence the equivalent operation in the DCT-domain is multiplication with the DCT of the matrix containing the averaging filter coefficients.
		We propose an algorithm for downsampling in the DCT domain which is computationally much faster.
	uirvli.ai.uiuc.edu /~dugad/research/dct (762 words)

	DCT Home Page - Welcome!
		DCT provides engineering services to the metalworking community.
		DCT was founded in 1982 to service the metalworking industry.
		We are leaders in applying computer simulation methods to thermal and mechanical processes; these areas include simulation of thermal barrier coatings for aerospace and land-based turbine applications, heat treatments involving phase transformations, and analysis of deformation processes.
	www.deformationcontrol.com (99 words)

	8-tap Winograd DCT optimised for FC0
		The DCT is a special kind of Fourier Transform with particular characteristics, for example there is no need of a "window" that fades data in and out.
		Optimizing the DCT is very benefic both for the encoding and the decoding of pictures and movies, for example, and this paper shows that F-CPU is particularly well suited to this task if the program is adapted a bit.
		For example, the input of the 2-D DCT is generally 8-bit numbers (when compressing images) and the output is 16-bit numbers, increasing by steps of 1 bit per pipeline stage.
	www.f-cpu.org /whygee/dct_fc0/dct_fc0.html (7016 words)

	MPEG Glossary (D) (Site not responding. Last check: 2007-11-07)
		The DCT coefficient for which the frequency is zero in both dimensions.
		The DCT is an invertible, discrete orthogonal transformation.
		The process of rescaling the quantised DCT coefficients after their representation in the bitstream has been decoded and before they are presented to the inverse DCT.
	www.crs4.it /OLD/LUIGI/MPEG/mpeggloss-d.html (520 words)

	DCT Artifacts Smoothing (Site not responding. Last check: 2007-11-07)
		When the inverse DCT is applied to the quantized coefficients, unpleasant blocky artifacts appear at the block boundaries.
		The use of the exponential distribution model removes the dependence on amplitude and allows the effects of coefficient indices and quantization level to be represented by a single parameter easily estimated from the quantized data.
		We have presented a method of estimating DCT coefficients from their quantized values and the quantization matrix, which are both included in the JPEG [Ref. 2] standard compressed image file.
	vision.arc.nasa.gov /publications/vcip95ah/95vcip.html (2243 words)

	DCT
		DCT keeps your lips in perfect conditions every day of the year, in all climates, through all activities.
		DCT softens and smoothes the surface of lips to help them look and feel young.
		DCT helps to prevent and replenish moisture-starved cells that can occur from daily exposure to dry air and other environmental conditions.
	www.blistex.com /DCT.htm (156 words)

	DCT - susning.nu (Site not responding. Last check: 2007-11-07)
		Fördelen med DCT framför DFT visar sig vid ljud- och bild- komprimering då den har sitt energispektra koncentrerat till ett mindre frekvensintervall.
		DCT av en signal är alltid reell jämfört med DFT som är ett komplext tal.
		Då DCT används för komprimering handlar det uteslutande om icke förlusftfri komprimering, dvs originalsignalen kan inte perfekt återskapas från den komprimerade.
	www.susning.nu /DCT (117 words)

	Discrete Cosine Transform
		A DCT operation on a block of pixels produces coefficients that are similar to the frequency domain coefficients produced by a DFT operation.
		An N-point DCT has the same frequency resolution as and is closely related to a 2N-point DFT.
		Assuming a periodic input, the magnitude of the DFT coefficients is spatially invariant (phase of the input does not matter).
	www.bretl.com /mpeghtml/DCxfrm.HTM (242 words)

	dct (Signal Processing Toolbox) (Site not responding. Last check: 2007-11-07)
		The DCT is closely related to the discrete Fourier transform.
		You can often reconstruct a sequence very accurately from only a few DCT coefficients, a useful property for applications requiring data reduction.
		Find how many DCT coefficients represent 99% of the energy in a sequence.
	www.ece.umr.edu /computing/unix/software/matlab/toolbox/signal/dct.html (108 words)

	DCT
		Due to the energy compaction offered by the DCT, the big coefficients are really big and will take more than 8 bits to code.
		The number in the mask corresponds to the number of bits each block was coded in.
		We do this so that the DCT's magnitude of the lowest and highest values would be at least in the range of the same magnitude, thus allowing us maximum utilization of our -128 to 127 range.
	www.owlnet.rice.edu /~elec539/Projects99/BACH/proj1/report/node6.html (431 words)

	NEWS! - Iomega DCT: "Clik!" disk gets a major capacity boost
		DCT certainly looks to be an interesting technology, and if the specifications are right, a 1.5GB removeable and rewriteable storage device could be ideally suited to digital camera use.
		That said, DCT is not the first such new media we've seen offered as a potential match for digicams.
		Should DCT have what it takes and prove well-suited to digital cameras in terms of cost, speed, reliability and power consumption, we'd love to see Iomega and its partners have great success - but we predict the road ahead will be a long and difficult one.
	www.imaging-resource.com /NEWS/1059334584.html (1898 words)

	DCT: Providing Barcoding Systems for Data Collection in Inventory Management (Site not responding. Last check: 2007-11-07)
		Since 1996 DCT Solutions Group has provided technology based productivity and mobility solutions for some of the Midwest’s leading companies.
		DCT is a technology leader that offers innovative business solutions based on secure mobility.
		DCT is the only company of its type in the region that fully integrates the tools and technology for a wireless workforce.
	www.dctkc.com (141 words)

	Discrete Cosine Transform. (Site not responding. Last check: 2007-11-07)
		The discrete cosine transform (DCT) helps separate the image into parts (or spectral sub-bands) of differing importance (with respect to the image's visual quality).
		The DCT is similar to the discrete Fourier transform: it transforms a signal or image from the spatial domain to the frequency domain.
		The input image is N2 pixels wide by N1 pixels high; A(i,j) is the intensity of the pixel in row i and column j; B(k1,k2) is the DCT coefficient in row k1 and column k2 of the DCT matrix.
	dynamo.ecn.purdue.edu /~ace/jpeg-tut/jpgdct1.html (199 words)

	CAST DCT Core
		The DCT core, able to operate over 8x8 and 16x16 blocks of samples, covers the needs of hardware image/video compression systems in the most efficient manner.
		The forward DCT (DCT) is a transform that converts a signal into its constituent frequency components as represented by a set of coefficients.
		The first DCT coefficient of an output block will appear at the output 87 clock cycles after the first image sample of an input block has been fed to the core.
	www.cast-inc.com /cores/dct/index.shtml (695 words)

	Index
		D.C.T ASSOCIATES PTY LTD manufacture products that provide for greater peace of mind for the carer and the cared for.
		DCT ASSOCIATES PTY LTD specialise in producing a personalized range of alarms ideal for application in nursing homes, retirement homes and hospitals.
		This is the home page of D.C.T. Associates Pty Ltd, ACN 007 966 145, designers and manufacturers of specialised alarm systems for the hearing and physically disadvantaged.
	www.dctassociates.com.au (605 words)

	DCT Artifacts Smoothing (Site not responding. Last check: 2007-11-07)
		Lossy image compression in the DCT domain is achieved by the quantization of the DCT coefficients.
		The use of the exponential distribution model removes the dependence on amplitude and represents the effects of coefficient indices and quantization level to be represented by a single parameter easily estimated from the quantized data.
		We have presented a method of estimating DCT coefficients from their quantized values and the quantization matrix, which are both included in the JPEG829 standard compressed image file.
	vision.arc.nasa.gov /publications/sid94ah/94sid.html (1926 words)

	DCT Civil Engineering Ltd
		DCT Civil Engineering Limited provides quality civil engineering construction services to clients for public works and private infrastructure projects throughout the United Kingdom.
		We are committed to our core principles - the desire to carry out our work in a safe, efficient, responsible and considerate manner.
		We are focused on meeting the expectations of our clients and committed to continual improvement.
	www.dct-civils.co.uk (99 words)

	Quantisation of DCT Coefficients (Site not responding. Last check: 2007-11-07)
		For our discussion of the 2-D DCT we assumed a quantiser step size of 15 to allow direct comparison of entropies with the Haar transform.
		The visibility of the 8×8 DCT basis functions of subfigure (a) in our discussion of the 2-D DCT has been measured (for a 720×576 image viewed from 6 times the image width) and the minimum quantiser steps have been determined which will give artefacts just at the threshold of visibility.
		Figure 2: Plots of the entropies of the 8×8 DCT quantised subimages for the four reconstructed images of figure 1.
	cnx.rice.edu /content/m11095/latest (440 words)

	Motorola DCT 2000 Hacking (Site not responding. Last check: 2007-11-07)
		This page is a collection of information I have gathered about the Motorola DCT 2000.
		This is probably a lot cheaper than ditching your DCT 2000 and than buying a new HDTV capable box.
		The BDM is a low level debugging interface for the M68K cpu for the DCT 2000.
	www.tussh.com /angus/dct2000.php (155 words)

	What is DCT? - A Word Definition From the Webopedia Computer Dictionary
		DCT is commonly used for data compression, as in JPEG.
		This usage of DCT results in lossy compression.
		DCT itself does not lose data; rather, data compression technologies that rely on DCT approximate some of the coefficients to reduce the amount of data.
	www.webopedia.com /TERM/D/DCT.html (85 words)

	D C T (Site not responding. Last check: 2007-11-07)
		The new keyboard DCT features the control of different matrix, multiplexer and DVR, as well as standard P&T and direct interface with the most common high speed domes, through the three axis proportional joystick.
		The maps can be easily designed on a PC and then uploaded to the DCT keyboard using the RS232 serial connection.
		Extreme easy for the operator and suitable for systems where cameras are installed in different environments.
	www.videotec.com /pages_416.html (145 words)

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