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Bresenham
Jack Elton Bresenham (born 11 October 1937, Clovis, New Mexico, US) is a former professor of computer science. Biography Bresenham retired from 27 years of service at IBM as a Senior Technical Staff Member in 1987. He taught for 16 years at Winthrop University and has nine patents. He has four children: Janet, Craig, Linda, and David. Bresenham's line algorithm, developed in 1962, is his most well-known innovation. It determines which points on a 2-dimensional raster should be plotted in order to form a straight line between two given points, and is commonly used to draw lines on a computer screen. It is one of the earliest algorithms discovered in the field of computer graphics. The midpoint circle algorithm shares some similarities to his line algorithm and is known as ''Bresenham's circle algorithm''. * Ph.D., Stanford University, 1964 * MSIE, Stanford University, 1960 * BSEE, University of New Mexico, 1959 See also * List of computer scientists * Bresenham's line algorit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bresenham's Line Algorithm
Bresenham's line algorithm is a line drawing algorithm that determines the points of an ''n''-dimensional raster that should be selected in order to form a close approximation to a straight line between two points. It is commonly used to draw line primitives in a bitmap image (e.g. on a computer screen), as it uses only integer addition, subtraction and bit shifting, all of which are very cheap operations in commonly used computer instruction sets such as x86_64. It is an incremental error algorithm, and one of the earliest algorithms developed in the field of computer graphics. An extension to the original algorithm may be used for drawing circles. While algorithms such as Wu's algorithm are also frequently used in modern computer graphics because they can support antialiasing, Bresenham's line algorithm is still important because of its speed and simplicity. The algorithm is used in hardware such as plotters and in the graphics chips of modern graphics cards. It can also be fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Midpoint Circle Algorithm
In computer graphics, the midpoint circle algorithm is an algorithm used to determine the points needed for rasterizing a circle. Bresenham's circle algorithm is derived from the midpoint circle algorithm. The algorithm can be generalized to conic sections. The algorithm is related to work by Pitteway and Van Aken. Summary This algorithm draws all eight octants simultaneously, starting from each cardinal direction (0°, 90°, 180°, 270°) and extends both ways to reach the nearest multiple of 45° (45°, 135°, 225°, 315°). It can determine where to stop because when y = x, it has reached 45°. The reason for using these angles is shown in the above picture: As x increases, it does not skip nor repeat any x value until reaching 45°. So during the while loop, x increments by 1 each iteration, and y decrements by 1 on occasion, never exceeding 1 in one iteration. This changes at 45° because that is the point where the tangent is rise=run. Whereas rise>run before and rise< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Graphics
Computer graphics deals with generating images with the aid of computers. Today, computer graphics is a core technology in digital photography, film, video games, cell phone and computer displays, and many specialized applications. A great deal of specialized hardware and software has been developed, with the displays of most devices being driven by computer graphics hardware. It is a vast and recently developed area of computer science. The phrase was coined in 1960 by computer graphics researchers Verne Hudson and William Fetter of Boeing. It is often abbreviated as CG, or typically in the context of film as computer generated imagery (CGI). The non-artistic aspects of computer graphics are the subject of computer science research. Some topics in computer graphics include user interface design, sprite graphics, rendering, ray tracing, geometry processing, computer animation, vector graphics, 3D modeling, shaders, GPU design, implicit surfaces, visualization, scientific c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Computer Scientists
This is a list of computer scientists, people who do work in computer science, in particular researchers and authors. Some persons notable as programmers are included here because they work in research as well as program. A few of these people pre-date the invention of the digital computer; they are now regarded as computer scientists because their work can be seen as leading to the invention of the computer. Others are mathematicians whose work falls within what would now be called theoretical computer science, such as complexity theory and algorithmic information theory. A * Atta ur Rehman Khan – Mobile Cloud Computing, Cybersecurity, IoT * Wil van der Aalst – business process management, process mining, Petri nets * Scott Aaronson – quantum computing and complexity theory * Rediet Abebe – algorithms, artificial intelligence * Hal Abelson – intersection of computing and teaching * Serge Abiteboul – database theory * Samson Abramsky – game semantics * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clovis, New Mexico
Clovis is a city in and the county seat of Curry County, New Mexico, Curry County, New Mexico. The city had a population of 37,775 as of the 2010 United States Census, 2010 census, and a 2019 estimated population of 38,319. Clovis is located in the New Mexico portion of the Llano Estacado, in the eastern part of the state. A largely agricultural community, closely bordering Texas, it is noted for its role in early rock music history and for nearby Cannon Air Force Base. After the discovery of several "Clovis culture" sites in eastern North America in the 1930s, the Clovis people came to be regarded as the first human inhabitants who created a widespread culture in the New World. Clovis people are considered to be the ancestors of most of the indigenous cultures of the Americas. The Atchison, Topeka and Santa Fe Railway system helped establish Clovis over one hundred years ago, and for that railroad and its successor BNSF Railway continues to be a major hub of operations. Also notab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sigma Xi
Sigma Xi, The Scientific Research Honor Society () is a highly prestigious, non-profit honor society for scientists and engineers. Sigma Xi was founded at Cornell University by a junior faculty member and a small group of graduate students in 1886, making it one of the oldest honor societies. Membership in Sigma Xi is by invitation only, where members nominate others on the basis of their research achievements or potential. Sigma Xi goals aim to honor excellence in scientific investigation and encourage cooperation among researchers in all fields of science and engineering. Information about Sigma Xi has nearly 100,000 members who were elected to membership based on their research achievements and potential. It has more than 500 chapters in North America and around the world. In addition to publishing ''American Scientist'' magazine, Sigma Xi provides grants annually to promising young researchers and sponsors a variety of programs supporting ethics in research, science and engineer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stanford University Alumni
Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is considered among the most prestigious universities in the world. Stanford was founded in 1885 by Leland and Jane Stanford in memory of their only child, Leland Stanford Jr., who had died of typhoid fever at age 15 the previous year. Leland Stanford was a U.S. senator and former governor of California who made his fortune as a railroad tycoon. The school admitted its first students on October 1, 1891, as a coeducational and non-denominational institution. Stanford University struggled financially after the death of Leland Stanford in 1893 and again after much of the campus was damaged by the 1906 San Francisco earthquake. Following World War II, provost of Stanford Frederick Terman inspired and supported faculty and graduates' entrepreneuriali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Computer Scientists
American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, people who self-identify their ancestry as "American" ** American English, the set of varieties of the English language native to the United States ** Native Americans in the United States, indigenous peoples of the United States * American, something of, from, or related to the Americas, also known as "America" ** Indigenous peoples of the Americas * American (word), for analysis and history of the meanings in various contexts Organizations * American Airlines, U.S.-based airline headquartered in Fort Worth, Texas * American Athletic Conference, an American college athletic conference * American Recordings (record label), a record label previously known as Def American * American University, in Washington, D.C. Sports teams Soccer * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Living People
Related categories * :Year of birth missing (living people) / :Year of birth unknown * :Date of birth missing (living people) / :Date of birth unknown * :Place of birth missing (living people) / :Place of birth unknown * :Year of death missing / :Year of death unknown * :Date of death missing / :Date of death unknown * :Place of death missing / :Place of death unknown * :Missing middle or first names See also * :Dead people * :Template:L, which generates this category or death years, and birth year and sort keys. : {{DEFAULTSORT:Living people 21st-century people People by status ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1937 Births
Events January * January 1 – Anastasio Somoza García becomes President of Nicaragua. * January 5 – Water levels begin to rise in the Ohio River in the United States, leading to the Ohio River flood of 1937, which continues into February, leaving 1 million people homeless and 385 people dead. * January 15 – Spanish Civil War: Second Battle of the Corunna Road ends inconclusively. * January 20 – Second inauguration of Franklin D. Roosevelt: Franklin D. Roosevelt is sworn in for a second term as President of the United States. This is the first time that the United States presidential inauguration occurs on this date; the change is due to the ratification in 1933 of the Twentieth Amendment to the United States Constitution. * January 23 – Moscow Trials: Trial of the Anti-Soviet Trotskyist Center – In the Soviet Union 17 leading Communists go on trial, accused of participating in a plot led by Leon Trotsky to overthrow Joseph Stalin's regime, and assas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pi Kappa Phi
Pi Kappa Phi (), commonly known as Pi Kapp(s), is an American Greek Letter secret and social fraternity. It was founded by Andrew Alexander Kroeg Jr., Lawrence Harry Mixson, and Simon Fogarty Jr. on December 10, 1904 at the College of Charleston in Charleston, South Carolina. The fraternity has 187 active chapters (168 chartered chapters and 19 associate chapters),; as revised/updated by: and more than 113,000 initiated members. Pi Kappa Phi's mission statement is "To create an uncommon and lifelong brotherhood that develops leaders and encourages service to others for the betterment of our communities." The fraternity's vision statement is "A future where every Pi Kappa Phi embraces his role as a leader, puts service before self and improves the world around him." Pi Kappa Phi operates in four entities: Pi Kappa Phi Fraternity, Pi Kappa Phi Foundation, The Ability Experience, and Pi Kappa Phi Properties. Pi Kappa Phi operates its own philanthropy, The Ability Experience (for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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