Windows only IrfanView has some losslessJPEG operations in its code JPG TRANSFORM code Plug in computing ... to JPEG 2000 in its use of wavelets JBIG2 lossless or lossy compression JPEGJPEG 2000 , JPEG s successor format that uses wavelets lossless or lossy compression JPEG XR , another successor of JPEG ... Original image small lossless data compression lossless Portable Network Graphics PNG , 60.1 kilobyte ... such as streaming media and VOIP internet telephony . By contrast, lossless data compression lossless ... cases it is advantageous to make a master lossless file that can then be used to produce compressed ... image on a web page. Lossy and lossless compression It is possible to compress many types of digital ... more accurately to human audio perception. While data reduction compression, be it lossy or lossless ... with lossless data compression , where data will not be lost via the use of such a procedure ... generated by the predictive stage. Lossy versus lossless The advantage of lossy methods over Lossless data compression lossless methods is that in some cases a lossy method can produce a much smaller compressed file than any lossless method, while still meeting the requirements of the application ... to 6 in lossy compression while in lossless compression it is about 50 to 60 of the actual file Transcoding .... This can be avoided by only producing lossy files from lossless originals and only editing copies of original files, such as images in raw image format instead of JPEG . Editing of lossy files seealso commons Commons Software JPEG commons Commons Software Ogg Vorbis audio By modifying the compressed ... to a greater degree, but without more loss than this, is sometimes also possible. JPEG The primary programs for lossless editing of JPEGs are code jpegtran code , and the derived code exiftran code ... jpegcrop jpegjoin JPEGjoin allows different JPEG images which have the same encoding to be joined ... well known designs that have this capability include JPEG 2000 for still images and H.264 MPEG ... more details
that created the JPEG , JPEG 2000 , and JPEG XR standards. It is one of two sub groups of International ... 2009 05 07 accessdate 2009 11 11 ref ref name jpeg sc29 cite web url http www.itscj.ipsj.or.jp sc29 ... 1997 2000 author ITU T accessdate 2010 03 07 ref is responsible for the JPEG and JBIG standards. ref name jpeg jbig cite web url http www.jpeg.org jbig index.html title Joint Photographic Experts Group, JBIG Homepage author JPEG accessdate 2009 11 08 ref The scope of the organization includes ... sc29 wg1 ref name jpeg jbig cite web url http www.jpeg.org committee.html title About our committee author JPEG, JBIG date 2007 accessdate 2009 11 11 ref In April 1983, ISO started to work to add ... jpeg1x index.html title ITU T extensions to JPEG 1 author ITU T accessdate 2010 03 07 ref ref name chiariglione jpeg history cite web url http ride.chiariglione.org faultline.htm title Riding the Media ... 2009 11 12 ref The JPEG committee was created in 1986. ref name jpegjpeg cite web url http www.jpeg.org jpeg index.html title Joint Photographic Experts Group, JPEG Homepage author JPEG accessdate .... The group often meets jointly with the JBIG committee. ref name chiariglione jpeg history ref name jpeg work cite web url http www.jpeg.org working.html title How does JPEG work? author JPEG ... name sc29 wg1 They created the JBIG and JBIG2 standard. ref name jpeg jbig ref name jpeg work Standards published and under development The JPEG Joint Photographic Experts Group as a sub group of ISO ... various standards, which have been published by ITU T and or ISO IEC. The standards developed by the JPEG ... T SG 16. The JPEG standards consist of different Parts. Each part covers a certain aspect of the whole specification. Some of the published JPEG standards were revised by later amendments and or new editions. Standards developed and under development by JPEG are shown in the table below. class wikitable Joint Photographic Experts Group standards published and under development ref name jpeg sc29 ... more details
its contrary nature, scalability also may be found in lossless codecs, usually in form of coarse to fine ... compression methods like JPEG2000, JPEG and JPEG XR HD Photo http dvd hq.info data compression.php Data Compression Basics includes comparison of PNG, JPEG and JPEG 2000 formats http datacompression.dogma.net index.php?title FAQ What is the state of the art in lossless image compression 3F FAQ What is the state of the art in lossless image compression? from news comp.compression comp.compression ... more details
is performed it is used in lossless compression . In contrast to JPEG 2000, PGF uses only powers of two ... graphics bitmapped Graphics file format image format that employs lossless data compression lossless and lossy data compression . PGF was created to improve upon and replace the JPEG format. It was developed at the same time as JPEG 2000 but with a focus on speed over data compression ratio compression ... artifacts of the original Discrete cosine transform DCT based JPEG standard. ref cite web url http ... for lossy and lossless image compression author Christoph Stamm accessdate 6 May 2010 date 404 I can ... claimed who date October 2011 advantages of PGF over the ordinary JPEG standard cn date October ... PSNR for the same compression ratio is on average 3 better than the PSNR of JPEG. At lower bit rates ... certain modes of JPEG artifacts are less visible and there is almost no blocking. The compression gains over JPEG are attributed to the use of Discrete wavelet transform DWT . Multiple resolution ... from the source. Lossless and lossy compression PGF provides both lossless and lossy compression in a single compression architecture. Both lossy and lossless compression are provided by the use of a reversible ... 2011 The aim of PGF is not only improved compression quality over JPEG but also adding or improving ... JPEG standard is actually rather modest and should not ordinarily be the primary consideration for evaluating the design. Moreover, very low and very high compression rates including lossless ... for a picture below a certain amount, the advisable thing to do with the first JPEG standard is to reduce ... are then wavelet transform ed to an arbitrary depth, in contrast to JPEG 1992 which uses an 8x8 ... bank is exactly the same as the reversible wavelet used in JPEG 2000. It uses only integer coefficients ... bits of significant coefficients. Clearly, in lossless mode all bit planes have to be encoded ... 2 sup k sup . Comparison with other file formats unreferenced section date October 2011 JPEG ... more details
Pulse amplitude modulation PAM Lossless data compression Main Lossless data compression Apple Lossless Audio Codec ALAC FFmpeg QuickTime ATRAC ATRAC Advanced Lossless ATRAC Advanced Lossless AAL ... Optional lossless surround sound format used by HD DVD and Blu ray , it uses Meridian Lossless Packing ... Audio Optional lossless surround sound format used by HD DVD and Blu ray , it was previously known as DTS and DTS HD Free Lossless Audio Codec FLAC FFmpeg libFLAC Lossless Audio codec Lossless Audio LA Lossless Predictive Audio Compression LPAC Lossless Transform Audio Compression LTAC MPEG 4 Audio Lossless Coding MPEG 4 ALS MPEG 4 ALS reference software ISO IEC 14496 5 2001 Amd 10 2007 Cor 3 2009 FFmpeg decoding only MPEG 4 MPEG 4 SLS Scalable Lossless Coding MPEG 4 SLS, also used in audio profile HD AAC MPEG 4 SLS reference software ISO IEC 14496 5 2001 Amd 10 2007 Meridian Lossless Packing MLP , also known as Packed PCM PPCM , it is as Dolby TrueHD the standard lossless compression method ... OFR Original Sound Quality OSQ RealAudio Lossless RK Audio RKAU Shorten SHN FFmpeg decoder only TTA codec True Audio TTA FFmpeg decoder only WavPack WV FFmpeg decoder only Windows Media Audio 9 Lossless ... Text Ogg Kate Ogg Writ Video codecs Main Video codec Video compression Lossless compression Lossless ... FFmpeg CamStudio GZIP LZO Dirac codec Dirac lossless libdirac FFmpeg decoder only FastCodec Fraps FFmpeg decoder only FFV1 FFmpeg H264 lossless x264 encoder only FFmpeg decoder only, uses x264 for encoding Huffyuv FFmpeg JPEG 2000 lossless Lagarith Lagarith Codec VfW codec FFmpeg decoder only LOCO FFmpeg decoder only LZO MSU Lossless Video Codec Portable Network Graphics PNG CorePNG FFmpeg SheerVideo Snow codec Snow lossless FFmpeg TechSmith Screen Capture Codec TSCC ref http www.techsmith.com ... only FFmpeg decoder only Indeo 3 4 5 FFmpeg decoder only MJPEG FFmpeg Morgan Multimedia M JPEG Pegasus PICVideo M JPEG PICVideo JPEG 2000 intra frame video codec FFmpeg OMS Video On2 Technologies TrueMotion ... more details
for some lossless formats than lossy formats. For example, simple images may be losslessly compressed into a GIF or PNG format and result in a smaller file size than a lossy JPEG format. Vector images ... algorithms Lossless data compression lossless and Lossy compression lossy . Lossless compression algorithms reduce file size while preserving a perfect copy of the original uncompressed image. Lossless compression generally, but not exclusively, results in larger files than lossy compression. Lossless ... smaller file sizes than lossless compression. Most lossy compression algorithms allow for variable ... types, there are hundreds of image file types. The PNG, JPEG, and GIF formats are most often ... s also known as pixmaps . JPEG JFIF JPEG Joint Photographic Experts Group is a compression method JPEG compressed images are usually stored in the JFIF JPEG File Interchange Format file format. JPEG compression is in most cases lossy compression . The JPEG JFIF filename extension is JPG or JPEG . Nearly every digital camera can save images in the JPEG JFIF format, which supports 8 bits per color ... does not noticeably detract from the image s quality, but JPEG files suffer Generation loss generational degradation when repeatedly edited and saved. The JPEG JFIF format also is used as the image compression algorithm in many PDF files. JPEG 2000 JPEG 2000 is a compression standard enabling both lossless and lossy storage. The compression methods used are different from the ones in standard JFIF JPEG they improve quality and compression ratios, but also require more computational power to process. JPEG 2000 also adds features that are missing in JPEG. It is not nearly as common as JPEG ... use JPEG 2000 for individual movie frames . Exif The Exif Exchangeable image file format format is a file standard similar to the JFIF format with TIFF extensions it is incorporated in the JPEG ..., since a reader that reads every type of TIFF file does not exist. TIFFs can be lossy and lossless ... more details
, JPEGlossless rotate mirror, adjust exposure and colors etc., filters sharpen, blur, average, emboss ..., vertical horizontal flip, losslessJPEG operations 90 steps , color management, 16bit color depth ... transitional effects, losslessJPEG transitions, drop shadow effects, scanner support, histogram, ... Free ... during first import LosslessJPEG rotate, Cropping custom and template , Brightness Contrast, Red ..., Rotate, Flip Vert Horiz, JPEGlossless transformations, Color Adjustments, change color depth, Greyscale ... info, ... Edit functions Resize, crop, rotate, flip, JPEGlossless rotate flip crop, adjust ..., JPEGlossless rotate, pan, zoom, fit, ITPC and Exif info, GPS support, full Unicode support, free version does not support color profiles... Edit functions Resize, crop, rotate, flip, JPEGlossless ... color management ICC profile ICC other special JPEGLossless operations Unicode support Program ... slideshow JPEGLossless operations special Yes br rotation only Unicode support special yes Program ... image functions hotkeys Color management ICC profile other special JPEGLossless operations special ... slideshow, mouse control JPEGLossless operations special No Unicode support special No Program ... Color management ICC profile other special Slider, automatic slideshow, mouse control JPEGLossless ... Rotate hotkeys yes br unconfigurable Color management ICC profile other special JPEGLossless operations ... caching file tree, ??? yes yes yes Color management ICC profile Screen captures... JPEGLossless operations ... list, file tree yes br keywords yes Export to HTML, Flickr , or O.r.i.g.i.n.a.l. JPEGLossless operations ... , or O.r.i.g.i.n.a.l. JPEGLossless operations special Unicode support special Program Fast Picture ... accelerated, HD Photo JPEG XR support. JPEGLossless operations special n a Unicode support special ... other special JPEGLossless operations special Yes br lossless transitions Unicode support special ... management ICC profile find duplicates, sort manager, recent collections JPEGLossless operations ... more details
Infobox software name GDCM logo screenshot caption developer Mathieu Malaterre br Jean Pierre Roux et al. programming language C latest release version 2.2.0 latest release date 30 December 2011 latest preview version latest preview date operating system Cross platform platform genre Image Library computing library license BSD License language C , C Sharp programming language C , Python programming language Python , Java programming language Java , PHP website http gdcm.sourceforge.net Grassroots DICOM or GDCM originally called GNU DiCoM the name was changed at a request for integration in Insight Segmentation and Registration Toolkit ITK , followed by a change in license , is a cross platform library written in C for Digital imaging and communications in medicine DICOM medical files. It is automatically wrapped to Python C Java & PHP using swig . It supports RAW, JPEG lossy lossless , J2K, JPEG LS, RLE and deflated. It also comes with DICOM Part 3,6 & 7 of the standard as XML files. It can be used to build a JPIP or WADO server. Since release 2.2.0 the toolkit comes with an SCU implementation for C ECHO C STORE C FIND C MOVE See also Portal Free software ImageMagick VTK Insight Segmentation and Registration Toolkit ITK CMake OpenJPEG Libjpeg IJG JPEG dcmtk Data DICOM DataSet are available, see http sourceforge.net apps mediawiki gdcm index.php?title General questions What is gdcmData .3F GDCM Data FAQ entry . External links http gdcm.sourceforge.net Home page http sourceforge.net projects gdcm SourceForge project page http www.creatis.insa lyon.fr software public Gdcm Historical GDCM 1.x page DEFAULTSORT Gdcm Category C libraries Category Graphics libraries ... more details
orphan date July 2010 High bit rate media transport HBRMT formerly known as High bit rate audio video over IP HBRAV IP , is a proposed standard for Data encapsulation disambiguation data encapsulation and forward error correction FEC of high bit rate contribution oriented video audio feed services, up to 3 Gbit s over Ethernet network s. HBRMT is being developed by the SMPTE 32NF networking technology committee. ref Citation url http www.videoservicesforum.org SMPTE 32NF Tech Com.shtml title SMPTE 32NF Networking Technology Committee accessdate 2010 10 10 ref HBRMT is designed to incorporate both Serial digital interface SDI uncompressed and JPEG 2000 compressed video and audio formats. ref TV Technology http www.tvtechnology.com article 90242 A Lossless Season ref See also Audio over Ethernet Audio over IP Voice over Internet Protocol References reflist External links http www.videoservicesforum.org HBRMT Encap and FEC Com.shtml Video Services Forum HBRMT Encapsulation and FEC Committee tv tech stub Category Film and video technology Category Audio network protocols it HBRAV IP ... more details
wiktionary loco Loco may refer to tocright Computers LocoRoco , a 2006 game for PlayStation Portable and PlayStation 3 Lossless JPEG LOCO I algorithm LOCO 1 , a near lossless image compression algorithm used in JPEG Loco Linux , Linux distribution Loco team , a group of Linux and open source advocates Loco video game Loco video game , a 1984 computer game for Commodore 64 Music loco , a musical term meaning in place see Glossary of musical terminology Loco Coal Chamber song Loco Coal Chamber song , the first single by the band Coal Chamber Loco Jowell & Randy song Loco Jowell & Randy song , a 2010 song by Jowell & Randy Loco David Lee Murphy song Loco David Lee Murphy song , a 2004 song by country music artist David Lee Murphy Loco , a 2009 song by Annie from Don t Stop Annie album Don t Stop Loco Fun Lovin Criminals album Loco Fun Lovin Criminals album , a 2001 album and song by the Fun Lovin Criminals Loco GOD album Loco GOD album , 1991 El Canto del Loco , a Spanish band Places Loco, Oklahoma , Stephens County Loco, Switzerland Characters Loco Gobots , a character from the Gobots toyline Loco M R , A fictional character in the manga and anime series M R Loco, a character portrayed by Klaus Kinski in the spaghetti western film The Great Silence 1968 People Loco Apache 1823 1905 , Apache chief The nickname of several people in Spanish speaking countries, often because of strange behaviour Sebasti n Abreu born 1976 , Uruguayan footballer Marcelo Bielsa born 1955 , Argentine football coach Eduardo Bonvallet born 1955 , Chilean footballer Manuel Antonio Cange , footballer Mart n Palermo born 1973 , Argentine footballer Juan Manuel Vargas born 1983 , Peruvian footballer Others Locoweed , an American term for some intoxicating plants, also slang for marijuana Spanish name for the edible mollusc Concholepas concholepas , commonly called Chilean abalone An abbreviation for locomotive Loco, ablative of wikt Special Search locus Locus , in turn Latin for place Loco loa , a ... more details
The term round trip is commonly used in document conversion particularly involving markup language s such as XML and SGML . A successful round trip consists of converting a document in format A docA to one in format B docB and then back again to format A docA . If docA and docA are identical then there has been no information loss and the round trip has been successful. More generally it means converting from any data representation and back again, including from one data structure to another. Information loss When a document in one format is converted to another there is likely to be information loss. For example, suppose an HTML document is saved as plain text .txt . Then all the markup structure, formatting, superscripts, will be lost. Compound documents will frequently lose information on images and other embedded objects. If the text file is converted back to the original format, information will necessarily be missing. A similar effect happens with image formats. Some formats such as JPEG achieve compression through small amount of information loss. If a Lossless data compression lossless file , such as a BMP file format BMP or Portable Network Graphics PNG file, is converted to JPEG and back again then the result will be different from the original although it may be visually very similar . Just because the initial and final documents are not bitwise identical does not mean there is information loss. Some formats have undefined fields, or fields where the contents have no impact on the result. Markup languages Markup languages such as XML can, in principle, hold any information and so the process docA docX docA could be designed to avoid information loss. It is now common to convert legacy formats to XML formats because they have greater interoperability and a wider set of available tools. Thus it is possible to convert Word documents to an XML format and reimport them. The XML document should contain identical information to the legacy format. An important c ... more details
2010 10 01 first Richard last Rabbat ref genre Image format br Lossless compression Lossless ... 2010 10 01 accessdate 2010 10 05 first Michael last Calore ref and lossless compression. It is developed ... url http news.cnet.com 8301 30685 3 20018146 264.html title Google offers JPEG alternative for faster ... JPEG publisher Ars Technica date 2010 10 02 accessdate 2010 10 05 first Ryan last Paul ref WebP ... on the web, thereby being presented as a direct competitor to the older JPEG scheme, to which ..., JPEG and JPEG 2000 work Google Code publisher Google accessdate 2010 10 01 ref On October 3 ... framework ref On November 18, 2011 they introduced lossless compression and support for Transparency graphic transparency Alpha compositing alpha channel in both the lossless and lossy modes. According ... with pngcrush and pngout. ref http googlecode.blogspot.com 2011 11 lossless and transparency encoding in.html Google Code blog Lossless and transparency encoding in WebP ref Technology WebP s lossy ... webp title Google open sources JPEG assassin newspaper The Register date 2010 09 30 accessdate 2010 .... ref name glaser Using a comparison of different encodings JPEG, x264, Theora , and WebP of a reference ... than ffmpeg s jpeg encoder, loses because it tries too hard to optimize for Peak signal to noise ... than JPEG s. ref name glaser See also WebM , a multimedia container format introduced by Google earlier in 2010, on which WebP is based JPEG 2000 , an improvement intended to replace the older JPEG by the JPEG committee, introduced in 2000 JPEG XR , a computationally lightweight alternative to JPEG 2000, introduced in 2009 Portable Network Graphics , lossless bitmap image format References Reflist ... more details
2009 11 11 ref ref name jpeg sc29 cite web url http www.itscj.ipsj.or.jp sc29 29w42901.htm title Programme ... Group created the JBIG and JBIG2 standards. ref name jpeg jbig cite web url http www.jpeg.org committee.html title About our committee author JPEG, JBIG date 2007 accessdate 2009 11 11 ref The group often meets jointly with the JPEG committee, which typically meets three times annually. ref name jpeg work cite web url http www.jpeg.org working.html title How does JPEG work? author JPEG date accessdate ... Group 8 Study Period 1997 2000 author ITU T accessdate 2010 03 07 ref is responsible for both JPEG and JBIG standards. ref name jpeg jbig cite web url http www.jpeg.org jbig index.html title Joint Photographic Experts Group, JBIG Homepage author JPEG accessdate 2009 11 08 ref It includes two sub groups the Joint Photographic Experts Group JPEG SG and the Joint Bi level Image experts Group JBIG SG . ref name jpeg jbig ref name sc29 wg1 In the mid 1980s, both CCITT now ITU T and ISO had standardization ... Coding of Audio and Picture Information . ref name chiariglione jpeg history cite web url http ride.chiariglione.org ... jpeg history Published Standards JBIG have developed following standards, which were published ... jpeg sc29 cite web url http www.itscj.ipsj.or.jp sc29 29w42901.htm title Programme of Work, Allocated ... Lossy lossless coding of bi level images Note The published JBIG2 standard was revised by later amendments. See also Joint Photographic Experts Group JPEG Moving Picture Experts Group MPEG References ... more details
no HD Photo JPEG XR Lossy and lossless bi orthogonal transform partial Raster 1, 2, 8, 16, 24, 32 ... yes yes JPEG Lossy and partly lossless , discrete cosine transform DCT , run length encoding RLE ... bit no no yes yes no no no yes no no see unofficial JPEG HDR JPEG 2000 Lossy and lossless Discrete ... Casio JPEG .cam CADRG Compressed ARC Digitized Raster Graphics .cadrg CALS Raster file format CAL ... cpi Highly compressed raster imaging format. No Yes CPKT APP5 CPKT Format JPEG .jpg, .jpe, .jpeg image jpeg Used by PROSERPINE. CPT Corel Photo Paint Image .cpt Crack Art Detlef R ttger & Jan Borchers ... brush The GIMP Team .gbr Supported by GIMP GIMP compressed XJT image The GIMP Team JPEG, tar .xjt ... JPEG XR HD Photo JPEG XR Microsoft .wdp, .hdp, .jxr image vnd.ms photo TIFF like container format with High ... JNG JPEG Network Graphics .jng image x jng Yes No JPEG Joint Photographic Experts Group Joint Photographic Experts Group .jpg, .jpeg, .jpe br containers br .jif, .jfif, .jfi image jpeg Photograph ic ... . Also see Forgent JPEG . JPEG 2000 Joint Photographic Experts Group 2000 Joint Photographic Experts Group .jp2, .j2c, .jpc, br .j2k, .jpx image jp2 Photograph ic images, eventual replacement for JPEG . Yes no licence costs for part 1 JPEG LS Joint Photographic Experts Group .jls JPEG HDR J6I RICOH JPEG .j6i Used by RICOH DC 1 2 Raw image format KDC Kodak DC40 DC50 RAW Kodak TIFF .kdc KOA .koa ... .cel Supported by GIMP Kodak TIFF extensions Kodak TIFF .tif Kodak YCC Kodak .pcd KQP Minolta JPEG ..., eventual replacement for JPEG . Yes No Portable Graymap File Format PGM Portable Graymap File Format .... ? PMP Sony JPEG .pmp Used by Sony Cyber Shot Portable Network Graphics PNG Portable Network Graphics ... http www.filmworks.com Seattle File Works JPEG JFIF .sfw, .pwp JPEG converters sfwjpg and pwpjpg ... no no no Adobe Illustrator Artwork AI Lossy and lossless yes Both 1, 8, 24, and 32 possibly with multiple palettes yes yes yes no no no yes yes unk no BEF image format BEF Visual lossless and lossy ... more details
Unreferenced date December 2009 File JPEG Generarion Loss rotating 90 stitch of 0,100,200,500,900,2000 times .png thumb 180px Digital generation loss induced by rotating a JPEG image 90 degrees from top to bottom 0, 100, 200, 500, 900, and 2000 times without using lossless tools Generation loss refers to the loss of quality between subsequent Copying copies or Transcoding transcodes of data. Anything that reduces the quality of the representation when copying, and would cause further reduction in quality on making a copy of the copy, can be considered a form of generation loss. File size increases are a common result of generation loss, as the introduction of Compression artifact artifacts may actually increase the entropy of the data through each generation. Analog generation loss In analog signal analog systems including systems that use digital recording but make the copy over an analog connection , generation loss is mostly due to signal noise noise and Bandwidth signal processing bandwidth issues in cable s, amplifier s, Audio mixer mixers , recording equipment and anything else between the source and the destination. Poorly adjusted distribution amplifier s and mismatched impedance s can make these problems even worse. Repeated conversion between analog and digital can also cause loss. Generation loss was a major consideration in complex analog audio and video editing, where ... page is better if generated from an uncompressed raw image than from an already compressed JPEG ... digital transform s are reversible, while many are not lossless compression is, by definition, fully ... are changed. For example, with JPEG , changing the quality setting will cause different quantization constants to be used, causing additional loss. Further, as JPEG is divided into 16 16 blocks or 16 ... if the underlying storage is lossless. Resampling causes aliasing , both blurring low frequency components ... digital images Lossless data compression DEFAULTSORT Generation Loss Category Data compression de Generationsverlust ... more details
JPEG images in a batch process, rename fields, open pictures and image folders from the Explorer, generate ... BMP file format BMP , Windows Metafile WMF , GIF , JPEG , JPEG2000 , TIFF , PCX , Portable Network ... more details
for instance, perform image editing on a JPEG image , one will generally decode it, edit it, then re ... is generally discouraged unless unavoidable. It is better to retain a copy in a lossless format such as TTA codec TTA , FLAC or WavPack for sound , and then encode directly from the lossless ... more details
Context date April 2011 Expert subject Software talk YULS and MSU relations date April 2011 Infobox software name YUVsoft s Lossless Video Codec screenshot author nowrap Maxim Smirnov developer YUVsoft latest stable version 1.0.3 latest stable date Start date and age df no programming language C operating system Microsoft Windows platform IA 32 size language English status Unmaintained genre lossless video codec license Proprietary software Proprietary , free for nowrap non commercial use website URL http www.yuvsoft.com 2d technologies losless video codec YULS or YUVsoft s Lossless Video Codec is a lossless video codec developed by YUVsoft. It was designed to produce highly compressed Lossless data compression lossless video. Compared to many lossless video codecs, YULS has the best compression ratio. dubious YULS and MSU relations date November 2011 ref name cru 2007 Releases class wikitable Version Changes ref name changelog 1.0.3 compression ratio improved by 5 1.0.2 YV12 and YUY2 are no longer converted to RGB24 2 4 speed increase Handling of incorrect state loading 1.0.1 2 3 speed increase persistent state error handling improved dialog windows reworked 1.0.0 Initial public release References reflist refs ref name cru 2007 citation url http compression.ru video codec comparison pdf msu lossless codecs comparison 2007 eng.pdf title Lossless Video Codecs Comparison 2007 editor first Dmitriy editor last Vatolin first1 Iwan last1 Seleznev first2 Maxim last2 Smirnov lastauthoramp yes publisher MSU Graphics & Media Lab work Video Group year 2007 month March accessdate 2011 11 27 ref ref name changelog citation url http www.yuvsoft.com downloads download lossless codec changelog.txt format txt title YUVsoft s Lossless Video Codec Change Log work YUVSoft accessdate 2011 11 27 ref Category Video codecs Category Lossless compression algorithms Compression Software Implementations software stub ... more details
Unreferenced date January 2009 Image Digital zoom example.png thumb right Digital zoom was used to make the middle photo from the top photo, while the lens was zoomed in optically for the bottom photo. Typically, the digital zoom would not be available until after the optical zoom had been exhausted. Digital zoom is a method of decreasing narrowing the apparent angle of view of a digital photographic or video image. Digital zoom is accomplished by Cropping image cropping an image down to a centered area with the same aspect ratio as the original, and usually also interpolation interpolating the result back up to the pixel dimensions of the original. It is accomplished electronically, with no adjustment of the camera s optics, and no optical resolution is gained in the process. When comparing the image quality achieved by digital zoom with image quality achieved by resizing the image in post processing, there s a difference between cameras that perform potentially Lossy compression lossy image compression like JPEG, and those that save images in an always lossless Raw image format . In the former case, digital zoom tends to be superior to enlargement in post processing, because the camera may apply its interpolation before detail is lost to compression. In the latter case, resizing in post production yields results equal or superior to digital zoom. Some digital cameras rely entirely on digital zoom, lacking a real zoom lens , as on most camera phone s. Other cameras do have a real zoom lens, but apply digital zoom automatically once its longest focal length has been reached. Professional cameras generally do not feature digital zoom. See also Image scaling Zoom lens DEFAULTSORT Digital Zoom Category Digital photography Photo stub cs Digit ln zoom da Digital zoom de Digitalzoom es Zoom digital no Digital zoom pl Zoom cyfrowy sl Digitalna pove ava sv Digital zoom ... more details
Multiple issues notability August 2011 refimprove August 2011 update November 2010 orphan April 2012 Infobox Software name Helicon Photo Safe logo Image HeliconPhotoSafeIcon.png 52px screenshot Image HeliconPhotoSafe.png 250px caption Helicon Photo Safe 1.43 Beta running on Windows XP developer Helicon Soft Ltd. latest release version 1.53 latest release date release date 2008 11 10 operating system Microsoft Windows genre Digital image organization and protection license Proprietary software Proprietary website http www.heliconsoft.com safe.html www.heliconsoft.com safe.html Helicon Photo Safe is a proprietary freeware and commercial digital image organization and protection tool produced by Helicon Soft Ltd. ref http www.heliconsoft.com safe.html Helicon Photo Safe s page at heliconsoft.com ref It is designed to be an image viewer and organizer which works together with the editing program Helicon Filter , as well as an image encryption tool. It is intended to be integrated into the future Helicon Filter 5. Features Helicon Photo Safe is compatible with both RAW formats and most standard formats, it can be used to access all photos on a computer, and images can be rated and tagged. In the commercial version, images may also be encrypted for protection. Helicon Image Importer The Helicon Image Importer is a tool which can import photos from various media. It can also perform automatic image renaming, grouping of images, batch keyword assignment, lossless jpeg rotation, and iptc editiong. See also Helicon Filter Picasa Comparison of image viewers External links http www.heliconsoft.com safe.html Helicon Photo Safe homepage References Reflist heliconsoft Category Image viewers Category Freeware Category Photo software Category Image organizers Category Digital photography Category Windows software Category Proprietary software Category Windows only freeware free software stub ... more details
compression ratio with lower compression. Lossless vs. lossy Lossless data compression Lossless compression ... of the data. In contrast, Lossy data compression lossy compression for example JPEG , or MP3 can achieve ... more details
unreferenced date June 2009 bot yes Adaptive coding refers to variants of entropy encoding methods of lossless data compression . They are particularly suited to streaming data, as they adapt to localized changes in the characteristics of the data, and don t require a first pass over the data to calculate a probability model. The cost paid for these advantages is that the encoder and decoder must be more complex to keep their states synchronized, and more computational power is needed to keep adapting the encoder decoder state. Almost all data compression methods involve the use of a model , a prediction of the composition of the data. When the data matches the prediction made by the model, the encoder can usually transmit the content of the data at a lower information cost, by making reference to the model. This general statement is a bit misleading as general data compression algorithm would include the popular LZW and LZ77 algorithms, which are hardly comparable to compression techniques typically called adaptive . Run length encoding and the typical JPEG compression with run length encoding and predefined Huffman codes do not transmit a model. A lot other methods adapt their model to the current file and need to transmit it in addition to the encoded data, because both the encoder and the decoder need to use the model. In adaptive coding, the encoder and decoder are instead equipped with a predefined meta model about how they will alter their models in response to the actual content of the data, and otherwise start with a blank slate, meaning that no initial model needs to be transmitted. As the data is transmitted, both encoder and decoder adapt their models, so that unless the character of the data changes radically, the model becomes better adapted to the data its ... filters on May 17, 2010. Cassini Lossless Compression Both converted 8 bit and unconverted 12 bit ... bandwidth limited on the number of bits available to encode it. CCSDS Category Lossless ... more details
A massive number of image file formats are available for storing graphical data, and, consequently, there are a number of issues associated with converting from one image format to another, most notably loss of image detail. Software compatibility Many image formats are native to one specific graphics application and are not offered as an export option in other software, due to proprietary considerations. An example of this is Adobe Photoshop s native PSD format, which cannot be opened in less sophisticated programs for image viewing or editing, such as Microsoft Paint . Most image editing software is capable of importing and exporting in a variety of formats though, and a number of dedicated image converters exist. Loss due to compression Besides uncompressed formats and lossless compression formats that can usually be interconverted without any loss of detail, there are compressed formats such as JPEG , which lose detail on nearly every compress. While a conversion from a compressed to an uncompressed format is in general without loss, this is not true the other way around. Even a compressed uncompressed compressed round trip without any image manipulation may encur some loss of detail Citation needed date October 2009 . Loss due to format change Like any resampling operation, changing image size and bit depth are lossy in all cases of downsampling , such as 30 bit to 24 bit or 24 bit to 8 bit Palette computing palette based images. While increasing bit depth is usually lossless, increasing image size can introduce aliasing or other undesired artifacts. RAW images More expensive digital cameras usually offer the option to shoot in Raw image format . It should be made clear, that RAW is not a standardized format, in fact, RAW formats even differ between camera models from the same vendor Citation needed date October 2009 . Data in a RAW file is structured according to the Bayer filter s pattern in cameras that use a single image sensor . Debayering , the process of ... more details
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