Pictures from Google Image Search

edge detector

A Dictionary of Computing | 2004 | | © A Dictionary of Computing 2004, originally published by Oxford University Press 2004. (Hide copyright information) Copyright

edge detector In gray-level image processing, images of typical scenes contain large areas of gradual intensity change, called segments, bounded by narrow regions of very rapid intensity change, called edges. An edge detector is a procedure or rule that locates a series of points, arranged roughly in a line, where rapid intensity changes have occurred. A set of edges can then be used by other operators, such as line finders, to build up the outline of object features. Many different forms of edge detectors have been developed in image processing, including the Laplacian operator.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

JOHN DAINTITH. "edge detector." A Dictionary of Computing. 2004. Encyclopedia.com. 10 Dec. 2009 <http://www.encyclopedia.com>.

JOHN DAINTITH. "edge detector." A Dictionary of Computing. 2004. Encyclopedia.com. (December 10, 2009). http://www.encyclopedia.com/doc/1O11-edgedetector.html

JOHN DAINTITH. "edge detector." A Dictionary of Computing. 2004. Retrieved December 10, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O11-edgedetector.html

Learn more about citation styles

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Mayer Hawthorne: Not Your Typical Soul Singer
Transcript from: NPR Tell Me More; 11/18/2009; ; 700+ words ; ...wrote. It's called "Just Ain't Gonna Work Out." MARTIN: All right, let's hear...Soundbite of song, "Just Ain't Gonna Work Out") Mr. HAWTHORNE: You know, NPR, I know you think we can all make it work out, but I got to tell it like it is...
Counting Stimulus Jobs Is Tough Work
Transcript from: NPR All Things Considered; 11/18/2009; ; 700+ words ; ...Things Considered 11-18-2009 Counting Stimulus Jobs Is Tough Work Host: ROBERT SIEGELTime 20:00-21:00 PM Play Audio ROBERT...the local restaurants, when the construction worker gets off work and goes to have lunch. KASTE: And in some cases, the government...
New Perils In Mexico For U.S.-Bound Migrants
Transcript from: NPR All Things Considered; 11/18/2009; ; 700+ words ; ...number of people heading north has gone down somewhat as word spreads that it's harder to get to the U.S. and harder to find work. But she adds Ms. MARTINEZ: (Foreign Language Spoken) BEAUBIEN: No crisis is going to affect the flow of migrants, she...
100 Years Of Johnny Mercer, Pop Poet Laureate
Transcript from: NPR All Things Considered; 11/18/2009; ; 700+ words ; ...a more rural part of America, and they're reflected in his work. (Soundbite of song, "Lazybones") Mr. MERCER: (Singing...Lazybones, sittin' in the sun. How you expect to get your day's work done? LUNDEN: Savannah is a city, but Mercer's lyrics are...
Reef Conservation Strategy Backfires
Transcript from: NPR All Things Considered; 11/18/2009; ; 700+ words ; ...Pacific to investigate whether these programs work, and she was shocked at what she found...coconut oil, which meant that they could work less to support themselves, and they spent...Conservancy): Well, no. It doesn't work to get them off the water. Rarely. HARRIS...
CHALLENGES AT THE FEDERAL PROTECTIVE SERVICE:RAND BEERS
Transcript from: Congressional Testimony; 11/18/2009; 700+ words ; ...with FPS and ICE to ensurean orderly and seamless transition. I have an enormous appreciation andtremendous respect for FPS` work. The protection of federal facilitiesand their occupants is critical, and we need to ensure that FPS has theresources and infrastructure...
CHALLENGES AT THE FEDERAL PROTECTIVE SERVICE:DAVID L. WRIGHT
Transcript from: Congressional Testimony; 11/18/2009; 700+ words ; ...over 1 milliondedicated civil servants who work in the 9,000 FPS secured facilities locatedin...sacrificed their leisureand family time to work the many hours of overtime required to...employees and members of the public who work in and visitFederal facilities include...
ABUSIVE OVERDRAFT FEES:FRANK POLLACK
Transcript from: Congressional Testimony; 11/17/2009; 700+ words ; ...programs.We have always viewed overdraft protection as a particularly valuable servicefor the military member. In their line of work maintaining good creditis important to their military readiness and ultimately their career. Thus,our program dates back more...
PARKS AND LANDS BILLS:ROBIN M. NAZZARO
Transcript from: Congressional Testimony; 11/17/2009; 700+ words ; ...updatedinformation, among other things. This testimony is based on our reportfor which audit work was performed between November 2006 and February 2008,as well as follow-up work conducted in September 2008 and November 2009,in accordance with generally accepted...
VETERANS' EMPLOYMENT:DANIEL K. AKAKA
Transcript from: Congressional Testimony; 11/18/2009; 590 words ; ...abuse, or are struggling with mental healthissues, finding work can seem impossible. Older veterans, and those fromother conflicts...They have learned discipline, commitment, and thevalue of hard work. Many employers are eager to hire these brave men andwomen...

Related entries from encyclopedias, dictionaries, and thesauruses

Efros, Israel Isaac
Book article from: Encyclopaedia Judaica ...honorary president of the university. His works on Jewish philosophy include The Problem...vision dominates his post-World War ii works. Efros translated Shelley's poetry and Shakespeare's Hamlet and other works into Hebrew, and some of Bialik's...
Wind Energy
Book article from: Alternative Energy ...not until much later that wind power was developed as a way to do work. Some historians believe that the earliest true windmills—that is, windmills built to do work—were built in China two thousand years ago, but no records...
SIC 2047 Dog and Cat Food
Encyclopedia entry from: Encyclopedia of American Industries ...various regulatory agencies and bodies, sponsors research, represents the U.S. industry in international meetings, and works on uniform standards for pet food. PFI worked with the American Association of Feed Control Officials (AAFCO) to develop...
SIC 2141 Tobacco Stemming and Redrying
Encyclopedia entry from: Encyclopedia of American Industries ...specific needs of the cigarette manufacturer, whose representatives are frequently at the processor's facilities to monitor the work on their orders. At the factory the tobacco is reclassified according to grade; blended to meet customer requirements regarding...
SIC 2231 Broadwoven Fabric Mills, Wool (Including Dyeing and Finishing)
Encyclopedia entry from: Encyclopedia of American Industries ...broadwoven fabrics of wool and similar animal fibers. In the early 1990s, only Japan's Tsudakoma Corp. and Toyoda Automatic Loom Works Ltd. manufactured air-jet weaving machines for making worsted fabrics. Sulzer Ruti of Switzerland manufactured projectile...

Find thousands of answers for hundreds of subjects at Smart QandA .

All answers verified by trusted sources at Encyclopedia.com

Try Smart QandA now!

For students and teachers!

Encyclopedia.com provides students and teachers facts, information, and biographies from verified, citable sources, including:

Encyclopedia.com provides students and teachers facts, information, and biographies from verified, citable sources, including: