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	AJE Consulting - Lagerverwaltung und LOSSY Datenfunk mit LOSSY Mobile
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	www.aje.de /produkte.htm (113 words)

	Lossy data compression article - Lossy data compression data compression streaming media telephony codecs lossless ... (Site not responding. Last check: )
		A lossy data compression method is one where compressing a file and then decompressing it retrieves a file that may well be different to the original, but is "close enough" to be useful in some way.
		The advantage of lossy methods over lossless methods is that in some cases a lossy method can produce a much smaller compressed file than any known lossless method, while still meeting the requirements of the application.
		Flaws caused by lossy compression that are noticeable to the human eye or ear are known as compression artifacts.
	www.what-means.com /encyclopedia/Lossy (398 words)

	Lossy data compression - Wikipedia, the free encyclopedia
		A lossy data compression method is one where compressing data and then decompressing it retrieves data that may well be different to the original, but is "close enough" to be useful in some way.
		Depending on the design of the format lossy data compression often suffers from generation loss, that is compressing and decompressing multiple times will do more damage to the data than doing it once.
		Researchers have also performed lossy compression on text by either using a thesaurus to substitute short words for long ones, or generative text techniques [1], although these sometimes fall into the related category of Lossy data conversion.
	en.wikipedia.org /wiki/Lossy (617 words)

	Encyclopedia: Lossy data compression
		Rate distortion theory is the branch of information theory addressing the problem of determining the minimal amount of entropy (or information) R that should be communicated over a channel such that the source (input signal) can be reconstructed at the receiver (output signal) with given distortion D. As such, rate...
		Fractal compression is a lossy compression method used to compress images using fractals.
		Musepack or MPC is an open source lossy audio codec, specifically optimized for transparent compression of stereo audio at bitrates of 160-180 kbit/s.
	www.nationmaster.com /encyclopedia/Lossy-data-compression (1705 words)

	Lossy Compression
		Lossy compression techniques recover the presentation with a certain loss of accuracy.
		However, the lossy techniques provide higher compression ratios, therefore they are applied more often in image and video compression than lossless techniques.
		The important point of lossy compression is that, its compression procedure can be adjusted to sacrifice some accuracy in order to gain a lot of compression.
	www.csi.edu /support/itc/pres2/lossy.htm (395 words)

	* Lossy - (Computing): Definition (Site not responding. Last check: )
		Lossy compression is best used on graphics files and sound files, where loss of quality is acceptable in many situations...
		Lossy compression (i.e., compression using a technique in which a portion of the original information is lost) is acceptable for some forms of data (e...
		MPEG-2 uses the lossy compression method, which means that the digital signal sent to the television is compressed and some data is lost,...
	www.bestknows.com /computing/lossy.html (572 words)

	Glossary & Acronyms: L-M - TimeForDVD.com
		lossy: is used in the context of describing audio encoding schemes where some detail or nuance of the original analog master or source material/signal are lost during the analog-to-digital and digital-to-analog conversion process.
		Lossy audio encoding algorithms are used when the data for lossless encoding schemes would far exceed the capacity of the recording/transmission medium.
		To minimize loss of audio performance, lossy audio encoding schemes uses perceptual encoding, where psycho-acoustics is used to encode the information that most humans are most likely to hear.
	timefordvd.com /glossary/GlossaryLtoM.shtml (856 words)

	Lossy Compression
		Lossy compression is a typical engineering trade-off: lower image quality for lower transmission rate.
		For this reason, lossy compression is often evaluated with reference to a rate-distortion curve.
		Errors introduced by lossy compression of the lower level differences are retained and coded by higher-level DCT passes.
	www.stanford.edu /~mbax/ee392c/node6.html (870 words)

	Theory of Data Compression
		In lossy data compression, the decompressed data does not have to be exactly the same as the original data.
		In lossy data compression, the decompressed data need not be exactly the same as the original data.
		On the other hand, in lossy data compression, the decompressed data may be different from the original data.
	www.data-compression.com /theory.shtml (2876 words)

	Halfbakery: Lossy Text Compression
		Work has been done on lossy text compression on a word level, but to my knowledge it has not been done on the letter level as I described.
		You can use lossy compression for JPEG's because that kind of visual information is handled by our right-brains which are holistic and relatively unaffected by loss of detail information--capable, indeed, of discerning meaning even in the face of awesomely unfavorable signal-to-noise ratios.
		Lossy compression is simply not appropriate for text compression because for the left brain to read the decompressed text, it must first work hard to "manufacture" the missing details (possibly calling on the right brain to step in and help?).
	www.halfbakery.com /idea/Lossy_20Text_20Compression (1014 words)

	Graphics: Use Lossy Compression for Smaller GIFs and PNGs - gif lossy png compression for smaller images pngs lzw ...
		You can apply lossy compression to the entire image, or selectively using weighted optimization with alpha masks for less important areas of your images (see Figure 1).
		Although the term sounds catchy, it should not be confused with the lossy compression used in JPEG compression.
		Lossy compression simply helps the process along, by intelligently tweaking pixel values to match other patterns along scan lines.
	www.websiteoptimization.com /speed/tweak/lossy (468 words)

	Bin Yu Lossy Data Compression (Site not responding. Last check: )
		This is called lossy compression and the theory studying its theoretical limits is called rate-distortion theory.
		Lossy compression is often done in practice, for example, when fetching images on the world wide web, recording audio on a compact disc or transmitting voice with a wireless digital telephone.
		This rate was asserted (for the distortion-rate function, which is the inverse of the rate-distortion function) in 1968 by Pilc, but his proof contained a major gap.
	www.stat.berkeley.edu /users/binyu/rdt.html (263 words)

	Lossy Channel Systems
		The state space of a lossy channel system is infinite due to the unboundedness of the channels.
		This was one of the first examples in the literature of decidability of safety properties for a class of systems which is not essentially finite-state (in contrast e.g.
		Furthermore, we show the undecidability of the problem of whether a state in a lossy channel system weakly simulates a state in a finite transition system.
	www.docs.uu.se /docs/avds/lcs.shtml (524 words)

	[No title] (Site not responding. Last check: )
		May be multivalued if successive lossy compression steps have been applied; the value order shall correspond to the values of Lossy Image Compression Ratio (0028,2112).
		Note: For historical reasons, the lossy compression method may also be described in Derivation Description (0008,2111)xe "(0008,2111)". C.7.6.1.1.5 Lossy Image Compression The Attribute Lossy Image Compression (0028,2110)xe "(0028,2110)" conveys that the Image has undergone lossy compression.
		The value of the Lossy Image Compression (0028,2110)xe "(0028,2110)" Attribute in SOP Instances containing multiple frames in which one or more of the frames have undergone lossy compression shall be “01”.
	medical.nema.org /DICOM/CP/CPack_26/cp400_lb.doc (835 words)

	ESC Dicom B'ham 96 - What is Lossy data compression? (Site not responding. Last check: )
		An International Lossy Compression study is underway that should provide more insight into the viability of lossy compression in Cardiac X-ray.
		This simple example demonstrates that Lossy data compression approaches do not guarantee exact replicas of the original data set, however, they are designed to minimize loss of "useful" information.
		It should be noted that the selection of a lossy compression scheme is very much correlated to the type of data that is being compressed and decompressed.
	www.uni-mainz.de /Cardio/dicom/links/219e.htm (340 words)

	JPEG 2000 Part 1, Core Coding, Lossy Compression
		Both reversible integer-to-integer and nonreversible real-to-real transforms are employed, the latter being referred to as "irreversible" in the terminology of the standard.
		In the case of lossless coding, reversible transforms must be employed and all quantizer step sizes are forced to be one.
		In the lossy case, either reversible or nonreversible transforms can be used, but the two types of transforms cannot be intermixed.
	www.digitalpreservation.gov /formats/fdd/fdd000140.shtml (630 words)

	Effects of Lossless and Lossy Image Compression and Decompression on Archival Image Quality
		Michael Tobin, M.D., Ph.D. The purpose of this study was to investigate the effects of lossless and lossy compression on two types of archived medical images for which interpretation depends on (1) high spatial resolution, e.g.
		Lossy compression achieves higher compression ratios than lossless, but at the expense of image quality, with the degree of lossiness under user control.
		Lossy wavelet compression of the bone radiograph led to loss of trabecular detail although pathology, such as calcification and erosion, remained visible.
	www.mikety.net /Articles/ImageComp/ImageComp.html (4180 words)

	Lossy Compression
		Actually, lossy compression is normally very tricky and requires some higher math, but for this assignment we've provided the code for SVD decomposition algorithm.
		However, you have to be willing to give up the requirement that the after compressing and decompressing, the resulting file is identical to the original.
		You will be implementing a lossy compression algorithm using a technique adopted from linear algebra.
	edbardsley.org /classes/15-211/lab4/lossy.html (2617 words)

	Optimizing Web Graphics: Photoshop 5.5 - WebReference.com
		No Adobe has not invented a new file format, the "Lossy GIF." The term is catchy but a bit misleading, GIF compression is actually lossless (LZW), it's the preprocessing and color reduction that can be lossy.
		Lossy GIF finds similar patterns and makes them identical by subtly changing pixels to match previous patterns.
		Lossy GIF makes a complex technique easy to use and Adobe should be commended for making it widely available.
	webreference.com /dev/graphics/photoshop.html (1047 words)

	Lossy Compression (Site not responding. Last check: )
		For example, a pixel described as RGB = [232,123,45] in the original image compressed using a lossy algorythm and stored, may then be expanded to produce an output of RGB=[230,125,45] on the output.
		The one on the left is an uncompressed file, the one on the right compressed (using a lossy algorythm).
		By contrast, lossy compression removes all of the redundacy and, in addition, some of the signal as well (shown by the dashes in the entropy).
	www.iis.ee.ic.ac.uk /~frank/surp00/article1/jko98 (1098 words)

	Bisimulation and Other Undecidable Equivalences for Lossy Channel Systems - Schnoebelen (ResearchIndex)
		Abstract: Lossy channel systems are systems of nite state automata that communicate via unreliable unbounded fo channels.
		Today the main open question in the theory of lossy channel systems is whether bisimulation is decidable.
		We show that bisimulation, simulation, and in fact all relations between bisimulation and trace inclusion are undecidable for lossy channel systems (and for lossy vector addition systems).
	citeseer.ist.psu.edu /schnoebelen01bisimulation.html (682 words)

	Sonnet Software - Chapter 8 - Lossy Ground Plane And Lossy Dielectric Tests
		The metal of the artificial ground plane is lossy.
		In this case, the usual analysis ground plane (bottom cover of the box) is moved far from the capacitor so that it has no influence.
		In structure A, the lossy ground plane is composed of regular subsectioned metal.
	www.sonnetusa.com /products/benchmarking/eval_ch8.asp (1175 words)

	GN - Image Compression - Lossless and Lossy (Site not responding. Last check: )
		Lossy compression is also done by re-writing the data more space efficient, but more than that: less important details of the image are manipulated or even removed so that higher compression rates are achieved.
		Lossy compression is dangerously attractive because the file size can be reduced to 1/100 and less!
		But the cost is loss of character, one of today's (2003) major dangers anyhow.
	www.laesieworks.com /digicom/LosslessLossy.html (143 words)

	lossy - a Whatis.com definition - see also: lossless and lossy compression, lossless, lossy compression, lossless ... (Site not responding. Last check: )
		Lossless and lossy compression are terms that describe whether or not, in the compression of a file, all original data can be recovered when the file is uncompressed.
		Lossy compression is generally used for video and sound, where a certain amount of information loss will not be detected by most users.
		The JPEG image file, commonly used for photographs and other complex still images on the Web, is an image that has lossy compression.
	whatis.techtarget.com /definition/0,,sid9_gci214453,00.html (256 words)

	Lossy PNG (when it is implemented)
		The amount of lossiness is controlled by an integer parameter called 'threshold'.
		The file size for the lossy Dilbert is 13794 bytes compared with 17434 bytes for the non-lossy PNG of that image, a 21% saving.
		GIFiply is a lossy processor for images to increase their compressibility with GIF (which uses LZW compression, similar but inferior to the LZH used in PNG and zlib; the idea of string matching is in both though).
	membled.com /work/apps/lossy_png (1586 words)

	Lossy compression
		Lossy compression methods are used most often for graphics and audio files.
		Some type of files do not support lossy compression or if compressed in this method will not work when uncompressed.
		A MP3 file is an example of a lossy compressed audio file.
	www.xmission.com /~comphope/jargon/l/lossy.htm (73 words)

	Lossy Transmission Line Modeling - Spring 1997
		The default frequency is 100MHz and the default length is 1 foot.
		The length value is used directly in the lossy transmission line's len parameter.
		Note that the resistance is being divided by 8.686 in the model to produce the appropriate units of nepers/ft.
	www.spectrum-soft.com /news/spring97/tline.shtm (515 words)

	Hydrogenaudio Forums -> is Lossless->Lossy Bad
		But then it occured to me that if a lossy codec incodes a lossless codec it may not incode to its full potenstial and also may have adverse effects.
		So there should be absolutely no difference in encoding from lossless to lossy or from wav to lossy.
		If i am to encode from lossless to lossy then the lossy encoder will first decode the lossy and then encode the resulting wave file.
	www.hydrogenaudio.org /forums/index.php?showtopic=11821 (1279 words)

	lossy - Glossary - CNET.com (Site not responding. Last check: )
		Graphics compression techniques fall into two camps: lossless and lossy.
		Lossy techniques, such as JPEG, crunch files down smaller, but they throw out image quality in the process.
		Most of the time, however, you can't see the difference in image quality unless you try to print the graphics on a professional imagesetter.
	www.cnet.com /Resources/Info/Glossary/Terms/lossy.html (102 words)

	Lossless and lossy audio formats for music
		That is, using lossy compression may reduce the quality of the music slightly, but it allows you to take a greater number of music tracks (or albums) on the bus to work.
		For comparison with lossy audio formats, each CD was ripped to MP3 (using the LAME codec at 256Kbit constant rate encoding) and the open source Ogg Vorbis format (using 256Kbit variable rate encoding).
		For portable storage, lossy formats are very clearly going to give you much more music to carry around at any one time.
	www.bobulous.org.uk /misc/audioFormats.html (2972 words)

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