144 relations: ACDSee, Adobe RGB color space, Arithmetic coding, Aspect ratio, Asure Software, Better Portable Graphics, Brightness, Byte, C-Cube, Canny edge detector, Channel (digital image), Chroma subsampling, Chrominance, Codec, Collins English Dictionary, Color depth, Color space, Comparison of browser engines (graphics support), Comparison of graphics file formats, Compression artifact, Consistent Overhead Byte Stuffing, Cover art, Daala, Data compression, Data structure alignment, Deblocking filter, Decimation (signal processing), Decorrelation, Design rule for Camera File system, Differential pulse-code modulation, Digital camera, Digital image, Digital image processing, Digital photography, Digital television, Discrete cosine transform, DVD-Video, Dynamic range, Ecma International, Edge detection, Entropy encoding, European Broadcasting Union, European wildcat, Exif, F-number, FastStone Image Viewer, FELICS, File format, Filename extension, Fourier transform, ..., Frequency domain, Fujifilm FinePix Real 3D, Gamma correction, Gamut, Generation loss, GIF, Graphics software, Guetzli, Hadamard product (matrices), High dynamic range, High Efficiency Image File Format, High Efficiency Video Coding, HTC Evo 3D, Huffman coding, ICC profile, ID3, Image compression, Image file formats, Image quality, Institute of Electrical and Electronics Engineers, Interlacing (bitmaps), International Color Consortium, International Electrotechnical Commission, International Organization for Standardization, Internet Explorer, Internet Explorer for Mac, IrfanView, ISO/IEC JTC 1, ISO/IEC JTC 1/SC 29, ITU-R, ITU-T, Joint Photographic Experts Group, JPEG, JPEG 2000, JPEG File Interchange Format, JPEG XR, JPEG XT, Lenna, Libjpeg, Lossless compression, Lossless JPEG, Lossy compression, Luma (video), Macroblock, Matrix of ones, Media type, Metadata, Motion JPEG, Moving Picture Experts Group, MP3, MPO, Multiplexed Analogue Components, NASA, Nintendo 3DS, NTSC, Orthonormality, PAL, Panasonic Lumix DMC-TZ20, Panasonic Lumix DMC-TZ30, Panasonic Lumix DMC-TZ60, Patent, Peak signal-to-noise ratio, Photograph, Portable Network Graphics, Prior art, Progressive Graphics File, Public Patent Foundation, Quantization (image processing), Rate–distortion theory, Raw image format, Ray tracing (graphics), Rec. 2100, Rec. 709, RGB color model, Ringing artifacts, Royalty-free, Run-length encoding, Sony, Spatial frequency, SRGB, Standard test image, Stereoscopy, Thumbnail, TIFF, Unisys, United States Patent and Trademark Office, WebP, Windows 7, World Wide Web, XnView, YCbCr, YIQ, Zigzag, Zopfli. Expand index (94 more) » « Shrink index
ACDSee is an image organizer, viewer, and image editor program for Windows, macOS and iOS, developed by ACD Systems International Inc.
The Adobe RGB (1998) color space is an RGB color space developed by Adobe Systems, Inc. in 1998.
Arithmetic coding is a form of entropy encoding used in lossless data compression.
The aspect ratio of a geometric shape is the ratio of its sizes in different dimensions.
Asure Software is a software company.
Better Portable Graphics (BPG) is a file format for coding digital images, which was created by programmer Fabrice Bellard in 2014.
Brightness is an attribute of visual perception in which a source appears to be radiating or reflecting light.
The byte is a unit of digital information that most commonly consists of eight bits, representing a binary number.
C-Cube Microsystems was an early company in video compression technology as well as the implementation of that technology into inexpensive semiconductor integrated circuits.
The Canny edge detector is an edge detection operator that uses a multi-stage algorithm to detect a wide range of edges in images.
Color digital images are made of pixels, and pixels are made of combinations of primary colors represented by a series of code.
Chroma subsampling is the practice of encoding images by implementing less resolution for chroma information than for luma information, taking advantage of the human visual system's lower acuity for color differences than for luminance.
Chrominance (chroma or C for short) is the signal used in video systems to convey the color information of the picture, separately from the accompanying luma signal (or Y for short).
A codec is a device or computer program for encoding or decoding a digital data stream or signal.
The Collins English Dictionary is a printed and online dictionary of English.
Color depth or colour depth (see spelling differences), also known as bit depth, is either the number of bits used to indicate the color of a single pixel, in a bitmapped image or video frame buffer, or the number of bits used for each color component of a single pixel.
A color space is a specific organization of colors.
This article compares graphics support for several browser engines.
This is a comparison of image file formats.
A compression artifact (or artefact) is a noticeable distortion of media (including images, audio, and video) caused by the application of lossy compression.
Consistent Overhead Byte Stuffing (COBS) is an algorithm for encoding data bytes that results in efficient, reliable, unambiguous packet framing regardless of packet content, thus making it easy for receiving applications to recover from malformed packets.
Cover art it is either an artwork as illustration or photograph on the outside of a published product such as a book (often on a dust jacket), magazine, newspaper (tabloid), comic book, video game (box art), DVD, CD, videotape, or music album (album art).
Daala is a video coding format under development by the Xiph.Org Foundation under the lead of Timothy B. Terriberry mainly sponsored by the Mozilla Corporation.
In signal processing, data compression, source coding, or bit-rate reduction involves encoding information using fewer bits than the original representation.
Data structure alignment refers to the way data is arranged and accessed in computer memory.
A deblocking filter is a video filter applied to decoded compressed video to improve visual quality and prediction performance by smoothing the sharp edges which can form between macroblocks when block coding techniques are used.
In digital signal processing, decimation is the process of reducing the sampling rate of a signal.
Decorrelation is a general term for any process that is used to reduce autocorrelation within a signal, or cross-correlation within a set of signals, while preserving other aspects of the signal.
Design rule for Camera File system (DCF) is a JEITA specification (number CP-3461) which defines a file system for digital cameras, including the directory structure, file naming method, character set, file format, and metadata format.
Differential pulse-code modulation (DPCM) is a signal encoder that uses the baseline of pulse-code modulation (PCM) but adds some functionalities based on the prediction of the samples of the signal.
A digital camera or digicam is a camera that captures photographs in digital memory.
A digital image is a numeric representation, normally binary, of a two-dimensional image.
In computer science, Digital image processing is the use of computer algorithms to perform image processing on digital images.
Digital photography is a form of photography that uses cameras containing arrays of electronic photodetectors to capture images focused by a lens, as opposed to an exposure on photographic film.
Digital television (DTV) is the transmission of television signals, including the sound channel, using digital encoding, in contrast to the earlier television technology, analog television, in which the video and audio are carried by analog signals.
A discrete cosine transform (DCT) expresses a finite sequence of data points in terms of a sum of cosine functions oscillating at different frequencies.
DVD-Video is a consumer video format used to store digital video on DVD discs, and is the dominant consumer video format in Asia, North America, Europe, and Australia.
Dynamic range, abbreviated DR, DNR, or DYR is the ratio between the largest and smallest values that a certain quantity can assume.
Ecma is a standards organization for information and communication systems.
Edge detection includes a variety of mathematical methods that aim at identifying points in a digital image at which the image brightness changes sharply or, more formally, has discontinuities.
In information theory an entropy encoding is a lossless data compression scheme that is independent of the specific characteristics of the medium.
The European Broadcasting Union (EBU; Union européenne de radio-télévision, UER) is an alliance of public service media organisations, established on 12 February 1950.
The European wildcat (Felis silvestris silvestris) is the nominate subspecies of the wildcat that inhabits forests of Western, Southern, Central and Eastern Europe up to the Caucasus Mountains.
Exchangeable image file format (officially Exif, according to JEIDA/JEITA/CIPA specifications) is a standard that specifies the formats for images, sound, and ancillary tags used by digital cameras (including smartphones), scanners and other systems handling image and sound files recorded by digital cameras.
The f-number of an optical system (such as a camera lens) is the ratio of the system's focal length to the diameter of the entrance pupil.
FastStone Image Viewer is an image viewer and organizer for Microsoft Windows, provided free of charge for personal and educational use,.
FELICS, which stands for Fast Efficient & Lossless Image Compression System, is a lossless image compression algorithm that performs 5-times faster than the original lossless JPEG codec and achieves a similar compression ratio.
A file format is a standard way that information is encoded for storage in a computer file.
A filename extension is an identifier specified as a suffix to the name of a computer file.
The Fourier transform (FT) decomposes a function of time (a signal) into the frequencies that make it up, in a way similar to how a musical chord can be expressed as the frequencies (or pitches) of its constituent notes.
In electronics, control systems engineering, and statistics, the frequency domain refers to the analysis of mathematical functions or signals with respect to frequency, rather than time.
The Fujifilm FinePix Real 3D W series is a line of consumer-grade digital cameras designed to capture stereoscopic images that recreate the perception of 3D depth, having both still and video formats while retaining standard 2D still image and video modes.
Gamma correction, or often simply gamma, is a nonlinear operation used to encode and decode luminance or tristimulus values in video or still image systems.
In color reproduction, including computer graphics and photography, the gamut, or color gamut, is a certain complete subset of colors.
Generation loss is the loss of quality between subsequent copies or transcodes of data.
The Graphics Interchange Format, better known by its acronym GIF, is a bitmap image format that was developed by a team at the bulletin board service (BBS) provider CompuServe led by American computer scientist Steve Wilhite on June 15, 1987.
In computer graphics, graphics software refers to a program or collection of programs that enable a person to manipulate images or models visually on a computer.
Guetzli is a freely licensed JPEG encoder developed at Google Research Europe in Zürich, Switzerland by Jyrki Alakuijala, Robert Obryk, and Zoltán Szabadka.
In mathematics, the Hadamard product (also known as the Schur product or the entrywise product) is a binary operation that takes two matrices of the same dimensions, and produces another matrix where each element i,j is the product of elements i,j of the original two matrices.
High dynamic range (HDR) is a dynamic range higher than what is considered to be standard dynamic range.
High Efficiency Image File Format (HEIF, often pronounced heef) is a file format for individual images and image sequences.
High Efficiency Video Coding (HEVC), also known as H.265 and MPEG-H Part 2, is a video compression standard, one of several potential successors to the widely used AVC (H.264 or MPEG-4 Part 10).
The HTC EVO 3D is a 3D-enabled Android smartphone developed by HTC, released exclusively in the United States through Sprint, and was re-released as a pre-paid smartphone by Virgin Mobile in May 2012 as the HTC Evo V 4G.
In computer science and information theory, a Huffman code is a particular type of optimal prefix code that is commonly used for lossless data compression.
In color management, an ICC profile is a set of data that characterizes a color input or output device, or a color space, according to standards promulgated by the International Color Consortium (ICC).
ID3 is a metadata container most often used in conjunction with the MP3 audio file format.
Image compression is a type of data compression applied to digital images, to reduce their cost for storage or transmission.
Image file formats are standardized means of organizing and storing digital images.
Image quality (often Image Quality Assessment, IQA) is a characteristic of an image that measures the perceived image degradation (typically, compared to an ideal or perfect image).
The Institute of Electrical and Electronics Engineers (IEEE) is a professional association with its corporate office in New York City and its operations center in Piscataway, New Jersey.
Interlacing (also known as interleaving) is a method of encoding a bitmap image such that a person who has partially received it sees a degraded copy of the entire image.
The International Color Consortium was formed in 1993 by eight vendors in order to create an open, vendor-neutral color management system which would function transparently across all operating systems and software packages.
The International Electrotechnical Commission (IEC; in French: Commission électrotechnique internationale) is an international standards organization that prepares and publishes International Standards for all electrical, electronic and related technologies – collectively known as "electrotechnology".
The International Organization for Standardization (ISO) is an international standard-setting body composed of representatives from various national standards organizations.
Internet Explorer (formerly Microsoft Internet Explorer and Windows Internet Explorer, commonly abbreviated IE or MSIE) is a series of graphical web browsers developed by Microsoft and included in the Microsoft Windows line of operating systems, starting in 1995.
Internet Explorer for Mac (also referred to as Internet Explorer for Macintosh, Internet Explorer Macintosh Edition, Internet Explorer:mac or IE:mac) is an unsupported inactive proprietary web browser developed by Microsoft for the Macintosh platform.
IrfanView is an image viewer, editor, organiser and converter program for Microsoft Windows.
ISO/IEC JTC 1 is a joint technical committee of the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC).
ISO/IEC JTC 1/SC 29 Coding of audio, picture, multimedia and hypermedia information is a standardization subcommittee of the Joint Technical Committee ISO/IEC JTC 1 of the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC), that develops and facilitates international standards, technical reports, and technical specifications within the field of audio, picture, multimedia, and hypermedia information coding.
The ITU Radiocommunication Sector (ITU-R) is one of the three sectors (divisions or units) of the International Telecommunication Union (ITU) and is responsible for radio communication.
The ITU Telecommunication Standardization Sector (ITU-T) is one of the three sectors (divisions or units) of the International Telecommunication Union (ITU); it coordinates standards for telecommunications.
The Joint Photographic Experts Group is the joint committee founded by Jim Judkins between ISO/IEC JTC 1 and ITU-T (formerly CCITT) that created the JPEG, JPEG 2000, and JPEG XR standards.
JPEG is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography.
JPEG 2000 (JP2) is an image compression standard and coding system.
The JPEG File Interchange Format (JFIF) is an image file format standard.
JPEG XR (JPEG extended range) is a still-image compression standard and file format for continuous tone photographic images, based on technology originally developed and patented by Microsoft under the name HD Photo (formerly Windows Media Photo).
JPEG XT (ISO/IEC 18477) is an image compression standard which specifies backward-compatible extensions of the base JPEG standard (ISO/IEC 10918-1 and ITU Rec. T.81).
Lenna or Lena is the name given to a standard test image widely used in the field of image processing since 1973.
libjpeg is a free library with functions for handling the JPEG image data format.
Lossless compression is a class of data compression algorithms that allows the original data to be perfectly reconstructed from the compressed data.
Lossless JPEG is a 1993 addition to JPEG standard by the Joint Photographic Experts Group to enable lossless compression.
In information technology, lossy compression or irreversible compression is the class of data encoding methods that uses inexact approximations and partial data discarding to represent the content.
In video, luma represents the brightness in an image (the "black-and-white" or achromatic portion of the image).
Macroblock is a processing unit in image and video compression formats based on linear block transforms, such as the discrete cosine transform (DCT).
In mathematics, a matrix of ones or all-ones matrix is a matrix over the real numbers where every element is equal to one.
A media type (formerly known as MIME type) is a two-part identifier for file formats and format contents transmitted on the Internet.
Metadata is "data that provides information about other data".
In multimedia, Motion JPEG (M-JPEG or MJPEG) is a video compression format in which each video frame or interlaced field of a digital video sequence is compressed separately as a JPEG image.
The Moving Picture Experts Group (MPEG) is a working group of authorities that was formed by ISO and IEC to set standards for audio and video compression and transmission.
MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is an audio coding format for digital audio.
MPO may stand for.
Multiplexed analogue components (MAC) was a satellite television transmission standard, originally proposed for use on a Europe-wide terrestrial HDTV system, although it was never used terrestrially.
The National Aeronautics and Space Administration (NASA) is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research.
The Nintendo 3DS is a handheld game console produced by Nintendo.
NTSC, named after the National Television System Committee,National Television System Committee (1951–1953),, 17 v. illus., diagrs., tables.
In linear algebra, two vectors in an inner product space are orthonormal if they are orthogonal and unit vectors.
Phase Alternating Line (PAL) is a color encoding system for analogue television used in broadcast television systems in most countries broadcasting at 625-line / 50 field (25 frame) per second (576i).
Panasonic Lumix DMC-TZ20 is a digital camera by Panasonic Lumix.
Panasonic Lumix DMC-TZ30 (also known as the DMC-ZS20 in the USA) is a digital camera by Panasonic Lumix.
Panasonic Lumix DMC-TZ60 is a digital camera by Panasonic Lumix.
A patent is a set of exclusive rights granted by a sovereign state or intergovernmental organization to an inventor or assignee for a limited period of time in exchange for detailed public disclosure of an invention.
Peak signal-to-noise ratio, often abbreviated PSNR, is an engineering term for the ratio between the maximum possible power of a signal and the power of corrupting noise that affects the fidelity of its representation.
A photograph or photo is an image created by light falling on a light-sensitive surface, usually photographic film or an electronic medium such as a CCD or a CMOS chip.
Portable Network Graphics (PNG, pronounced or) is a raster graphics file format that supports lossless data compression.
Prior art (state of the art or background art), in most systems of patent law, is constituted by all information that has been made available to the public in any form before a given date that might be relevant to a patent's claims of originality.
PGF (Progressive Graphics File) is a wavelet-based bitmapped image format that employs lossless and lossy data compression.
Public Patent Foundation, or PUBPAT, is a non-profit organization that seeks to limit perceived abuse of the United States patent system.
Quantization, involved in image processing, is a lossy compression technique achieved by compressing a range of values to a single quantum value.
Rate–distortion theory is a major branch of information theory which provides the theoretical foundations for lossy data compression; it addresses the problem of determining the minimal number of bits per symbol, as measured by the rate R, that should be communicated over a channel, so that the source (input signal) can be approximately reconstructed at the receiver (output signal) without exceeding a given distortion D.
A camera raw image file contains minimally processed data from the image sensor of either a digital camera, image scanner, or motion picture film scanner.
In computer graphics, ray tracing is a rendering technique for generating an image by tracing the path of light as pixels in an image plane and simulating the effects of its encounters with virtual objects.
ITU-R Recommendation BT.2100, more commonly known by the abbreviations Rec. 2100 or BT.2100, defines various aspects of high dynamic range (HDR) video such as display resolution (HDTV and UHDTV), frame rate, chroma subsampling, bit depth, color space, and optical transfer function.
ITU-R Recommendation BT.709, more commonly known by the abbreviations Rec. 709 or BT.709, standardizes the format of high-definition television, having 16:9 (widescreen) aspect ratio.
The RGB color model is an additive color model in which red, green and blue light are added together in various ways to reproduce a broad array of colors.
In signal processing, particularly digital image processing, ringing artifacts are artifacts that appear as spurious signals near sharp transitions in a signal.
Royalty-free, or RF, refers to the right to use copyright material or intellectual property without the need to pay royalties or license fees for each use, per each copy or volume sold or some time period of use or sales.
Run-length encoding (RLE) is a very simple form of lossless data compression in which runs of data (that is, sequences in which the same data value occurs in many consecutive data elements) are stored as a single data value and count, rather than as the original run.
is a Japanese multinational conglomerate corporation headquartered in Kōnan, Minato, Tokyo.
In mathematics, physics, and engineering, spatial frequency is a characteristic of any structure that is periodic across position in space.
sRGB (standard Red Green Blue) is an RGB color space that HP and Microsoft created cooperatively in 1996 to use on monitors, printers, and the Internet.
A standard test image is a digital image file used across different institutions to test image processing and image compression algorithms.
Stereoscopy (also called stereoscopics, or stereo imaging) is a technique for creating or enhancing the illusion of depth in an image by means of stereopsis for binocular vision.
Thumbnails are reduced-size versions of pictures or videos, used to help in recognizing and organizing them, serving the same role for images as a normal text index does for words.
Tagged Image File Format, abbreviated TIFF or TIF, is a computer file format for storing raster graphics images, popular among graphic artists, the publishing industry, and photographers.
The United States Patent and Trademark Office (USPTO) is an agency in the U.S. Department of Commerce that issues patents to inventors and businesses for their inventions, and trademark registration for product and intellectual property identification.
WebP is an image format employing both lossy and lossless compression.
Windows 7 (codenamed Vienna, formerly Blackcomb) is a personal computer operating system developed by Microsoft.
The World Wide Web (abbreviated WWW or the Web) is an information space where documents and other web resources are identified by Uniform Resource Locators (URLs), interlinked by hypertext links, and accessible via the Internet.
XnView is an image organizer and general-purpose file manager used for viewing, converting, organizing and editing raster images, as well as general purpose file management.
YCbCr, Y′CbCr, or Y Pb/Cb Pr/Cr, also written as YCBCR or Y'CBCR, is a family of color spaces used as a part of the color image pipeline in video and digital photography systems.
YIQ is the color space used by the NTSC color TV system, employed mainly in North and Central America, and Japan.
A zigzag is a pattern made up of small corners at variable angles, though constant within the zigzag, tracing a path between two parallel lines; it can be described as both jagged and fairly regular.
Zopfli is data compression software that encodes data into DEFLATE, gzip and zlib formats.
.JPEG, .JPG, .jpe, .jpeg, .jpg, .jps, .mpo, Data compression/JPEG, ISO 10918-1, Image/jpeg, Interlaced JPEG, JPE file, JPEG Image, JPEG Interchange Format, JPEG Stereo, JPEG Stereoscopic, JPEG encoding, JPEG file, JPEG file format, JPEG image, JPG, JPG file, JPIG, Jaypeg, Jpeg, Jpg, Minimum Coded Unit, Minimum coded unit, Multi-Picture Format, P JPG, PJPEG, PJPG, Progressive JPEG, T.81.