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Error Level Analysis
Error level analysis (ELA) is the analysis of compression artifacts in digital data with lossy compression such as JPEG. Principles When used, lossy compression is normally applied uniformly to a set of data, such as an image, resulting in a uniform level of compression artifacts. Alternatively, the data may consist of parts with different levels of compression artifacts. This difference may arise from the different parts having been repeatedly subjected to the same lossy compression a different number of times, or the different parts having been subjected to different kinds of lossy compression. A difference in the level of compression artifacts in different parts of the data may therefore indicate that the data has been edited. In the case of JPEG, even a composite with parts subjected to matching compressions will have a difference in the compression artifacts. In order to make the typically faint compression artifacts more readily visible, the data to be analyzed is subje ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compression Artifacts
A compression artifact (or artefact) is a noticeable distortion of media (including images, audio, and video) caused by the application of lossy compression. Lossy data compression involves discarding some of the media's data so that it becomes small enough to be stored within the desired disk space or transmitted (''streamed'') within the available bandwidth (known as the data rate or bit rate). If the compressor cannot store enough data in the compressed version, the result is a loss of quality, or introduction of artifacts. The compression algorithm may not be intelligent enough to discriminate between distortions of little subjective importance and those objectionable to the user. The most common digital compression artifacts are DCT blocks, caused by the discrete cosine transform (DCT) compression algorithm used in many digital media standards, such as JPEG, MP3, and MPEG video file formats. These compression artifacts appear when heavy compression is applied, and occu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Press Photo
World Press Photo Foundation is an independent, non-profit organization based in Amsterdam, Netherlands. Founded in 1955, the organization is known for holding an annual press photography contest. Since 2011, World Press Photo has organized a separate annual contest for journalistic multimedia productions, and, in association with Human Rights Watch, the annual Tim Hetherington Grant. Objectives A primary objective of the organization is to support professional photojournalism on a wide international scale through the World Press Photo Academy. It aims to stimulate developments in photojournalism, encourage the transfer of knowledge, help develop high professional standards in visual journalism and promote a free and unrestricted exchange of information. It organizes a number of educational projects throughout the world: seminars, workshops and the annual Joop Swart Masterclass. Award ceremony An annual awards ceremony is held in the Oude Kerk in Amsterdam. After the contest, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data Analysis
Data analysis is a process of inspecting, cleansing, transforming, and modeling data with the goal of discovering useful information, informing conclusions, and supporting decision-making. Data analysis has multiple facets and approaches, encompassing diverse techniques under a variety of names, and is used in different business, science, and social science domains. In today's business world, data analysis plays a role in making decisions more scientific and helping businesses operate more effectively. Data mining is a particular data analysis technique that focuses on statistical modeling and knowledge discovery for predictive rather than purely descriptive purposes, while business intelligence covers data analysis that relies heavily on aggregation, focusing mainly on business information. In statistical applications, data analysis can be divided into descriptive statistics, exploratory data analysis (EDA), and confirmatory data analysis (CDA). EDA focuses on discovering ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Image Analysis
Image analysis or imagery analysis is the extraction of meaningful information from images; mainly from digital images by means of digital image processing techniques. Image analysis tasks can be as simple as reading bar coded tags or as sophisticated as identifying a person from their face. Computers are indispensable for the analysis of large amounts of data, for tasks that require complex computation, or for the extraction of quantitative information. On the other hand, the human visual cortex is an excellent image analysis apparatus, especially for extracting higher-level information, and for many applications — including medicine, security, and remote sensing — human analysts still cannot be replaced by computers. For this reason, many important image analysis tools such as edge detectors and neural networks are inspired by human visual perception models. Digital Digital Image Analysis or Computer Image Analysis is when a computer or electrical device au ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiegel Online
''Der Spiegel (online)'' is a German news website. Before the renaming in January 2020, the website's name was ''Spiegel Online'' (short ''SPON''). It was founded in 1994 as the online offshoot of the German news magazine, ''Der Spiegel'', with a staff of journalists working independently of the magazine. Today, it is the most frequently quoted online media product in Germany. ''Spiegel Online International'', a section featuring articles translated into English, was launched in autumn 2004. In 2019, its editorial office was merged with the one of the printed Spiegel and in 2020, the website was renamed accordingly. Company and editorial staff The news website ''Der Spiegel (online)'' is run by Der Spiegel GmbH & Co. KG (formerly Spiegel Online GmbH & Co. KG), itself a wholly owned subsidiary of Spiegel-Verlag. The editorial offices of the news website and the print magazine ''Der Spiegel'' were separate operations, that had their own offices, authors and content until January ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jens Kriese
{{disambiguation ...
Jens may refer to: * Jens (given name), a list of people with the name * Jens (surname), a list of people * Jens, Switzerland, a municipality * 1719 Jens, an asteroid See also * Jensen (other) * Jenssi Joensuu (; krl, Jovensuu; ) is a city and municipality in North Karelia, Finland, located on the northern shore of Lake Pyhäselkä (northern part of Lake Saimaa) at the mouth of the Pielinen River (''Pielisjoki''). It was founded in 1848. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malaysia Airlines Flight 17
Malaysia Airlines Flight 17 (MH17/MAS17) was a scheduled passenger flight from Amsterdam to Kuala Lumpur that was shot down by Russian forces on 17 July 2014, while flying over eastern Ukraine. All 283 passengers and 15 crew were killed. Contact with the aircraft, a Boeing 777-200ER, was lost when it was about from the Ukraine–Russia border, and wreckage from the aircraft fell near Hrabove in Donetsk Oblast, Ukraine, from the border. The shoot-down occurred during the war in Donbas over territory controlled by Russian separatist forces. The responsibility for investigation was delegated to the Dutch Safety Board (DSB) and the Dutch-led joint investigation team (JIT), who in 2016 reported that the airliner had been downed by a Buk surface-to-air missile launched from pro-Russian separatist-controlled territory in Ukraine. The JIT found that the Buk originated from the 53rd Anti-Aircraft Missile Brigade of the Russian Federation and had been transported from Russia on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Ministry Of Defense
The Ministry of Defence of the Russian Federation (russian: Министерство обороны Российской Федерации, Минобороны России, informally abbreviated as МО, МО РФ or Minoboron) is the governing body of the Russian Armed Forces. The President of Russia is the Commander-in-Chief of the Armed Forces of the Russian Federation and directs the activity of the Ministry. The Defence Minister exercises day-to-day administrative and operational authority over the armed forces. The General Staff executes the president's and the defence minister's instructions and orders. The main building of the ministry, built in the 1940s, is located on Arbatskaya Square, near Arbat Street. Other buildings of the ministry are located throughout the city of Moscow. The supreme body responsible for the Ministry's management and supervision of the Armed Forces is The National Defense Management Center (Национальный центр управл ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bellingcat
Bellingcat (stylised as bellngcat) is a Netherlands-based investigative journalism group that specialises in fact-checking and open-source intelligence (OSINT). It was founded by British journalist and former blogger Eliot Higgins in July 2014. Bellingcat publishes the findings of both professional and citizen journalist investigations into war zones, human rights abuses, and the criminal underworld. The site's contributors also publish guides to their techniques, as well as case studies. Bellingcat began as an investigation into the use of weapons in the Syrian Civil War. Its reports on the Russo-Ukrainian War (including the downing of Malaysia Airlines Flight 17), the El Junquito raid, the Yemeni Civil War, the Skripal poisoning, and the killing of civilians by the Cameroon Armed Forces have attracted international attention. Name The name derives from the idiom " belling the cat", which comes from a medieval fable about mice who discuss how to make a cat harmless. One mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citizen Journalism
Citizen journalism, also known as collaborative media, participatory journalism, democratic journalism, guerrilla journalism or street journalism, is based upon public citizens "playing an active role in the process of collecting, reporting, analyzing, and disseminating news and information."Bowman, S. and Willis, C.We Media: How Audiences are Shaping the Future of News and Information. 2003, ''The Media Center at the American Press Institute''. Similarly, Courtney C. Radsch defines citizen journalism "as an alternative and activist form of news gathering and reporting that functions outside mainstream media institutions, often as a response to shortcomings in the professional journalistic field, that uses similar journalistic practices but is driven by different objectives and ideals and relies on alternative sources of legitimacy than traditional or mainstream journalism". Jay Rosen offers a simpler definition: "When the people formerly known as the audience employ the press t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wired UK
''Wired UK'' is a bimonthly magazine that reports on the effects of science and technology. It covers a broad range of topics including design, architecture, culture, the economy, politics and philosophy. Owned by Condé Nast Publications, it is published in London and is an offshoot of the original American ''Wired''. History Earlier version (mid–1990s) The magazine's current incarnation follows an earlier attempt at a British edition of ''Wired'' which ran from April 1995 until March 1997. It was initially created as a joint venture with the Guardian Media Group and ''Wired US''s then owners, Wired Ventures, but that incarnation lasted only three or four issues, due to a culture clash between the two parties and low sales figures of 25,000 per month. Wired Ventures then ran the UK edition alone, with an almost entirely new staff, until the magazine was closed with the March 1997 issue, when sales were at 40,000 magazines per month. Current version (2009–present) The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hany Farid
Hany Farid is an American university professor who specializes in the analysis of digital images and the detection of digitally manipulated images such as deepfakes. Farid serves as Dean and Head of School for the UC Berkeley School of Information. In addition to teaching, writing, and conducting research, Farid acts as a consultant for non-profits, government agencies, and news organizations. He is the author of the book ''Photo Forensics'' (2016). Education Farid received his undergraduate degree in computer science and applied mathematics from the University of Rochester in 1989. He earned a M.S. in computer science from SUNY/Albany in 1992. His Ph.D. in computer science from the University of Pennsylvania was awarded in 1997. In 1999, Farid completed a two-year post-doctoral program in Brain and Cognitive Sciences at the Massachusetts Institute of Technology. Career Farid specializes in image analysis and human perception. He has been called the "father" of digital image f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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