Image Washington DC Security Search.JPG thumb A detection dog getting ready to search a car for explosives ... the luggage by smelling for fruit . Image Border detection dog.jpg thumb Detection dog at the Canadian ... States Army National Museum of the U. S. Army . A detection dog or sniffer dog is a dog that is trained ... game and search dog s that search for missing humans are generally not considered detection dogs. There is some overlap, as in the case of Police dog human remains detection dogs sometimes called cadaver ... date 22 July 2009 accessdate 11 November 2010 ref Functions Detection dogs have been trained ... used to search for bootleg recording s Termite s Div col end One notable quality of detection ... by other odors. In one case at an Australian prison, a detection dog foiled an attempt to smuggle ... fungi, for centuries. Criticism of drug detection dogs Their use has been criticized as allowing ... to provide police with powers to use drug detection dogs without a warrant in public places such as licensed ... author2 link title Police Powers Drug Detection Dogs Act 2001 newspaper pages year date url http ... highly critical of the use of dogs for drug detection. The report stated that prohibited drugs were ... Review of the Police Powers Drug Detection Dogs Act 2001 publisher date 14 September 2006 location ... Dunn M, Degenhardt L title The use of drug detection dogs in Sydney, Australia journal Drug Alcohol ... dogs in traffic stops often wrong date 6 January 2011 ref Bed bug detection dogs Bed bug detection ... focus on green pest management and integrated pest management , bed bug detection dogs are gaining ... all life cycle phases from eggs to nymphs to adults. Bed bug detection dogs are quickly becoming ..., but the certification and use of bed bug detection canines. The NPMA Best Management Practices emphasize the importance of having a bed bug detection dog team certified by a third party organization with no affiliation to the trainer or company that sold the canine. Bed bug detection dogs are a viable ... more details
The threat of radiological attacks has led several organizations to develop specially designed nuclear detection systems. These systems differ in design and abilities. http www.sandia.gov news resources releases 2007 scatter.html Neutron Scatter Camera Sandia National Labs http pst.pppl.gov tt projects MINDS.htm MINDS Miniature Integrated Nuclear Detection System Princeton Plasma Physics Lab Center for Neutron Research NIST See also http www.sciencedaily.com releases 2007 11 071123203623.htm Neutron Scatter Camera Detects Shielded Radiation To Find Smuggled Nuclear Material , Science Daily , November 26, 2007 Nuclear MASINT Category Nuclear materials Category Nuclear safety nuclear stub ... more details
cleanup date December 2010 Plagiarism detection is the process of locating instances of plagiarism within ... scientific papers, art designs, and source code. Detection can be either manual or computer assisted. Manual detection requires substantial effort and excellent memory, and is impractical in cases .... Computer assisted detection allows vast collections of documents to be compared to each other, making successful detection much more likely. Computer assisted plagiarism detection Computer assisted plagiarism detection CaPD is an Information retrieval Information retrieval IR task supported by specialized IR systems, referred to as plagiarism detection systems PDS . Plagiarism detection for text documents Systems for text plagiarism detection implement one of two generic detection approaches, one ..., and Near Duplicate Detection PAN 07 journal SIGIR Forum volume 41 issue 2 year 2007 month Dec ... contribution Overview of the 1st International Competition on Plagiarism Detection year 2009 title ... Competition on Plagiarism Detection series CEUR Workshop Proceedings volume 502 pages 1 9 issn ... retrieval Model types document model and predefined similarity criteria, the detection task is to retrieve ... last Meyer zu Eissen first Sven last2 Stein first2 Benno contribution Intrinsic Plagiarism Detection ... last Lancaster first Thomas title Effective and Efficient Plagiarism Detection year 2003 type PhD ... 2007 pages 4451 4458 publisher AACE url http www.editlib.org p 26021 ref Detection methods ... detection from a technical point of view. The techniques are characterized by the type of similarity ... plagiarism detection methods Fingerprinting is currently the most widely applied approach to computer assisted, plagiarism detection. The procedure forms representative digests of documents by selecting ... first2 James last3 Garcia Molina first3 Hector contribution Copy Detection Mechanisms for Digital Documents ... first2 Arkady last3 Schmidt first3 Heinz contribution Document Overlap Detection System for Distributed ... more details
image. In statistics and signal processing , step detection also known as step smoothing , step filtering , shift detection , jump detection or edge detection is the process of finding abrupt changes ... kind of statistical method known as change detection change point detection . Often, the step ... algorithms are often required. The step detection problem occurs in multiple scientific and engineering ... 919 doi 10.1038 nature04003 issue 7060 ref . For 2D signals, the related problem of edge detection ... year 1982 ref Algorithms When the step detection must be performed as and when the data arrives, then online ... title Detection of Abrupt Changes Theory and Application publisher Prentice Hall year 1993 ref ... for step detection in digital data can be categorised as top down , bottom up , sliding window , or global ... 1992 title Singularity detection and processing with wavelets journal IEEE Transactions on Information .... Linear versus nonlinear signal processing methods for step detection Because steps and independent ... transform Fourier basis , signal processing approaches to step detection generally do not use .... Soc. A. url http web.media.mit.edu maxl publications pwc filtering arxiv.pdf year 2011 ref Step detection and piecewise constant signals Because the aim of step detection is to find a series of instantaneous ..., step detection can be profitably viewed as the problem of recovering a piecewise constant .... Many algorithms for step detection are therefore best understood as either 0 degree spline fitting, or level set recovery, methods. Step detection as level set recovery When there are only a few unique ... piecewise constant signal. Step detection as 0 degree spline fitting Many algorithms explicitly ... 19 pages S165 S187 ref Generalized step detection by piecewise constant denoising All the algorithms ... large number of these step detection algorithms are special cases of a more general algorithm ... software PWCTools Flexible Matlab software for step detection by piecewise constant denoising ... more details
Technical date June 2011 Unreferenced date December 2009 Heterodyne detection is a method of detecting radiation by non linear mixing with radiation of a reference frequency. It is commonly used in telecommunications and astronomy for detecting and analysing signals. The radiation in question is most commonly either radio waves see superheterodyne receiver or light see Optical heterodyne detection or interferometry . The reference radiation is known as the local oscillator . The signal and the local oscillator are superimposed at a Frequency mixer mixer . The mixer, which is commonly a photo diode , has a non linear response to the amplitude, that is, at least part of the output is proportional to the square of the input. The received signal can be represented as math E mathrm sig cos omega mathrm mathrm sig t varphi , math and that of the local oscillator can be represented as math E mathrm LO cos omega mathrm LO t . , math For simplicity, assume that the output I of the detector is proportional to the square of the amplitude math I propto left E mathrm sig cos omega mathrm sig t varphi E mathrm LO cos omega mathrm LO t right 2 math math frac E mathrm sig 2 2 left 1 cos 2 omega mathrm sig t 2 varphi right math math frac E mathrm LO 2 2 1 cos 2 omega mathrm LO t math math E mathrm sig E mathrm LO left cos omega mathrm sig omega mathrm LO t varphi cos omega mathrm sig omega mathrm LO t varphi right math math underbrace frac E mathrm sig 2 E mathrm LO 2 2 constant component underbrace frac E mathrm sig 2 2 cos 2 omega mathrm sig t 2 varphi frac E mathrm LO 2 2 cos 2 omega mathrm LO t E mathrm sig E mathrm LO cos omega mathrm sig omega mathrm LO t varphi high frequency component ... LO math and constant components. In heterodyne detection, the high frequency components and usually ... as well. See also Heterodyne Homodyne detection Optical heterodyne detection DEFAULTSORT Heterodyne Detection Category Waves Category Metrology cs Heterodynn detekce de Heterodyne Detektion fr D tection ... more details
Infobox Book See Wikipedia WikiProject Novels or Wikipedia WikiProject Books name The Art of Detection title orig translator image Image Art of detection.jpg 200px image caption The Art of Detection cover author Laurie R. King illustrator cover artist country United States language English language English series Kate Martinelli series genre Novel publisher Bantam Books release date May 30, 2006 english release date media type Print Hardcover Hardback & Paperback pages 386 pp Bantam Books hardback isbn 0 553 80453 7 dewey 813 .54 22 congress PS3561.I4813 A89 2006 oclc 62858090 preceded by Night Work followed by The Art of Detection is the fifth book in the Kate Martinelli series by Laurie R. King . It is preceded by Night Work . Plot summary Philip Gilbert, the head of a group of Sherlock Holmes Baker Street Irregulars enthusiasts , is found dead in a national park s artillery battery . Because the autopsy report is slow coming, inspector Kate Martinelli and her partner Al Hawkin treat the death as a murder case. She can discover little about the dead man aside from his unrelenting fascination with all things Holmes. One of his dinner group companions, Ian Nicholson, reveals that he had discovered a lost Holmes story, possibly by Sir Arthur Conan Doyle , about the murder of a gay soldier in 1920s San Francisco. Kate s interest is piqued when Ian mentions that Gilbert s body was discovered under the same circumstance as the soldier s in the story. Eventually, Kate traces Gilbert s ex wife and learns that it is likely Glibert was gay, given that he had been with an actor several years before. She connects him with Nicholson, who used to be an actor and whose own ex wife admits he is gay. Kate questions Nicholson, who admits that he hit Gilbert with a heavy bottle of wine after ..., Nicholson commits suicide by cop . Characters in The Art of Detection Kate Martinelli Lee Cooper ...?book number 1802 Reviews of The Art of Detection DEFAULTSORT Art of Detection, The Category 2006 ... more details
Infobox Album See Wikipedia WikiProject Albums Name An Instinct for Detection Type studio Artist Lionrock Cover Instinctfordetection.jpg Released April 8, 1996 UK br July 15, 1997 USA Recorded UK Genre Electronica br Breakbeat br Trip hop Length Label Deconstruction Records Deconstruction UK br Time Bomb Recordings Time Bomb USA Producer Justin Robertson Reviews Allmusic Rating 4 5 Allmusic class album id r239856 pure url yes link Rhapsody online music service Rhapsody favorable http www.rhapsody.com Lionrock Lionrock albumreview link Last album This album An Instinct for Detection br 1996 Next album City Delirious br 1998 An Instinct for Detection is the debut studio album by Lionrock , the band formed by Manchester DJ , remixer and Music producer producer Justin Robertson . It was released in the UK on April 6, 1996, and an extended version with added bonus track s and remixes was released in the USA in 1998. br The album featured the singles Packet of Peace , Fire Up the Shoesaw and Straight at Yer Head . ref cite web title Lionrock discography work discogs.com url http www.discogs.com Lionrock An Instinct For Detection release 46694 accessdate 2009 04 10 ref ref cite web title An Instinct for Detection work Allmusic url Allmusic class album id r239856 pure url yes accessdate 2009 04 10 ref Tracklisting CD1 Morning Will Come When I m Not Ready 3 49 Straight at Yer Head 5 29 Peace Repackaged 4 16 Death Valley Clapperboard 6 16 Fire Up the Shoesaw 5 44 Don t Die Foolish 8 20 Depth 4 43 Snapshot on Pollard Street 5 28 Guide 6 52 Number Nine 4 49 Bag of Biros 6 57 Wilmslow Road 7 34 br CD2 USA only br Fire Up the Shoesaw vocal mix 3 58 Packet of Peace Chemical Brothers mix 7 13 Packet of Peace Prankster Sound System mix 6 51 Straight at Yer Head An Instinct For Version 5 ... , except tracks 2,3,6,9,13 16 and 19 J. Robertson, MC Buzz B ref cite web title An Instinct for Detection ... Instinct For Detection Category 1996 debut albums Category Electronica albums by British artists ... more details
Unreferenced date April 2011 Flame detection is the technology for detecting flames, using a flame detector . Flame detectors are optical equipment for the detection of flame phenomena of a fire. There are two categories of flame detection Flame detector for the detection of a fire in a fire alarm system Flame scanner for monitoring the condition of a flame in a burner Several different methods of flame detection are possible. Spectrum Image flame detection spectrum.JPG thumb right 250px Spectrum Ultraviolet An ultraviolet UV sensor is often sensitive for radiation in the 185 to 260 nm range. This frequency range is the least sensitive for natural background radiation sources like cosmic .... It is used for tracing defects in high voltage equipment and fire detection over high distances. Near ... flames in the near IR band are arguably the most reliable technologies available for detection of fires ... flame detection in the 4.3 to 4.4 m region. From approx. 3.5 m and higher the absorption ... detection emission of radiation.JPG thumb right 250px Emission of radiation A fire emits radiation .... Sunlight Image flame detection sunlight.JPG thumb right 250px Sunlight transmission The sun ... of sunlight. Hence, this frequency range is used for flame detection by a few flame detector manufacturers .... These electro optical sensor combinations also enable the detection of none hydrocarbons like .... Heat radiation Image flame detection radiation of heat.JPG thumb right 250px Heat Radiation Infrared ... influenced by this effect, regardless how expensive it is. Cone of vision Image flame detection ... of the angle of vision provides advantages for the projection of a flame detector. The detection range Image flame detection range.JPG thumb right 250px Detection Range The range of a flame detector ... flame detection square law.JPG thumb right 250px Square Law The square law applies to flame detection ... part. Category Fire detection and alarm nl Vlamdetectie ... more details
Edge detection is a fundamental tool in image processing , machine vision and computer vision , particularly in the areas of feature detection computer vision feature detection and feature extraction , which ... in 1D signals is known as step detection . Motivations Image EdgeDetectionMathematica.png thumb 500px Canny edge detection applied to a photograph The purpose of detecting sharp changes in image brightness ... SpringerEOM title Edge detection id Edge detection oldid 17883 first Tony last Lindeberg ref discontinuities ... an edge detection algorithm to an image may significantly reduce the amount of data to be processed ... the important structural properties of an image. If the edge detection step is successful, the subsequent ... 1998 Edge detection and ridge detection with automatic scale selection , International Journal of Computer Vision, 30, 2, pages 117 154. ref Edge detection is one of the fundamental steps in image ... Which? date June 2010 that do not explicitly rely on edge detection as a pre processing step. Edge properties ... be extracted by a ridge detection ridge detector can be a small number of pixels of a different ... side of the line. A simple edge model Although certain literature has considered the detection ... scale of the edge. Why edge detection is a non trivial task To illustrate why edge detection is not a trivial ... of the reasons why edge detection may be a non trivial problem unless the objects in the scene ... detection, but most of them can be grouped into two categories, search based and Zero crossing zero .... As a pre processing step to edge detection, a smoothing stage, typically Gaussian smoothing, is almost always applied see also noise reduction . The edge detection methods that have been published mainly ... are computed. As many edge detection methods rely on the computation of image gradients, they also ... of a number of different edge detection methods can be found in Ziou and Tabbone 1998 ref D. Ziou and S. Tabbone 1998 Edge detection techniques An overview , International Journal of Pattern ... more details
Prey detection is the process by which predator s are able to detect and locate their prey via sensory system sensory signals. This article treats predation in its broadest sense, i.e. where one organism eats another. Evolutionary struggle and prey defenses Further2 Antipredator adaptation s Image Arctic Hare.jpg right thumb Prey have adaptations such as the cryptic animal coloration coloration in this Arctic Hare which help them avoid predation. Predators are in an evolutionary arms race with their prey, for which advantageous mutations are constantly preserved by natural selection . In turn, predators too are subject to such selective pressure , those most successful in locating prey passing on their genes in greater number to the next generation s gene pool . Adaptations of prey that allow them to avoid protection are widespread, and this general pattern is collectively known as crypsis . Crypsis may involve temporal evasion such as nocturnality , behavioral methods such as hiding, and non behavioral adaptations such a camouflage . Often behavioral and passive characteristics are combined, for example a prey animal may look similar to and behave like its hunter s own predator see mimicry . Prey detection using different senses Expand section date June 2008 There are a variety of methods used to detect prey. Sensory systems used include the visual system , olfactory system smell .... Detection methods may also be divided into direct detection of the prey organism itself, and indirect ... in prey detection, as voles are quick to concealment hide from such predators. ref Viitala, J., E ... even if they make no sound. ref Moiseff, A. and Haresign, T. 2001 Prey Detection by Bats and Owls ... detection Image IMG 2085 Calvia decemguttata.JPG right thumb This ladybeetle Calvia decemguttata ... detection. Aposematic plants and animals may have conspicuous animal coloration coloration such that potential ... Notes reflist DEFAULTSORT Prey Detection Category Predation Category Sensory system ... more details
Detection theory , or signal detection theory , is a means to quantify the ability to discern between ... noise , consisting of background stimuli and random activity of the detection machine and of the nervous ... of the early work in detection theory was done by radar researchers. ref Cite journal pages 90 last Marcum first J. I. title A Statistical Theory of Target Detection by Pulsed Radar journal The Research ... P. coauthors John A. Swets title A decision making theory of visual detection. journal Psychological ... 10.1037 h0058700 pmid 13215690 ref Detection theory was used in 1966 by John A. Swets and David M. Green for psychophysics . ref Swets, J.A. ed. 1964 Signal detection and recognition by human observers ... response bias es. ref name Green&Swets Green, D.M., Swets J.A. 1966 Signal Detection Theory and Psychophysics . New York Wiley. ISBN 0 471 32420 5 ref Detection theory has applications in many fields ... Signal detection theory SDT is used when psychologists want to measure the way we make decisions under ... detection theory to a data set where stimuli were either present or absent, and the observer categorized ... bias can be estimated with statistics like . cn date February 2012 Signal detection theory can also ... Signal Detection Theory has wide application, both in humans and Comparative psychology other ... Schonhoff Schonhoff, T.A. and Giordano, A.A. 2006 Detection and Estimation Theory and Its Applications ... Signal Processing Detection Theory ISBN 0 13 504135 X McNichol, D. 1972 A Primer of Signal Detection Theory . London George Allen & Unwin. Van Trees HL. Detection, Estimation, and Modulation ... Elementary Signal Detection Theory . New York Oxford University Press. ISBN 0 19 509250 3 External links http www.cns.nyu.edu david sdt sdt.html A Description of Signal Detection Theory http strobos.cee.vt.edu ... SignalDetectionTheory Signal Detection Theory by Garrett Neske, The Wolfram Demonstrations Project Psychology DSP DEFAULTSORT Detection Theory Category Detection theory Category Signal processing ... more details
Pipeline leak detection includes hydrostatic test after pipeline erection and leak detection during service. This article mainly refers to in service leak detection. Pipeline networks are the most economic .... The primary purpose of leak detection systems LDS Systems is to assist pipeline controllers in detecting ... controllers in order to aid in decision making. Pipeline leak detection systems are also beneficial ... detection during steady state operation. One of these systems or an additional one must also be able ... detection during shut in operation One LDS for creeping leaks One LDS for fast leak location Requirements API 1155 ref name LitAPI1155 API 1155 1995 Evaluation Methodology for Software Based Leak Detection ... most of the time. LDS should allow for detection of leaks for both conditions to provide leak detection during the entire operating time of the pipeline. Internally based LDS File Overview ...., Werner, T., Matko, D. 2003 Leak Detection and Locating A Survey. 35th Annual PSIG Meeting, 15 17 October ... or flow at only one point can therefore provide simple leak detection. As it is done locally ... of Leak Detection. 1st Edition September 2008 . Krohne Oil & Gas, Breda The Netherlands . ref . Acoustic ... in the industry less than 1 false alarm per year. ref Avateq Corp. Press Release. New Leak Detection ... 0 text No leak math math text Hypothesis H 1 text Leak math This is a classical detection problem, and there are various ... methods. So, leak detection is possible during steady state and transient condition with high ... Ten Year of Experience with Leak Detection by Acoustic Signal Analysis. Applied Acoustics 33 1991 , p. 1 19. ref . Vapour sensing tubes The vapour sensing tube leak detection method involves the installation ... the column of air in the tube past a detection unit at a constant speed. The detector unit at the end ... leak peak ref name LitSurvey . Fibre optic leak detection The fibre optic sensing leak detection method involves the installation of a fibre optic cable along the entire length of the pipeline ... more details
Existence checking or existence detection is an important aspect of many computer program s. An existence check before reading a file can catch and or prevent a fatal error, for instance. For that reasons, most programming language Library computing libraries contain File.Exists methods. An existence check can sometimes involve a Brute force search brute force approach of checking all records for a given identifier, as in this Microsoft Excel Visual Basic for Applications code for detecting whether a worksheet exists source lang php Function SheetExists sheetName As String As Boolean Dim sheetCount As Integer Dim t As Integer SheetExists False sheetCount ActiveWorkbook.Sheets.Count For t 1 To sheetCount If Sheets t .Name sheetName Then SheetExists True Exit Function End If Next t End Function source References reflist Category Computer programming comp sci stub ... more details
Agent detection is the inclination for animal s and human s to presume the purposeful intervention of a sentient or intelligent agency philosophy agent in situations that may or may not involve an intelligent agent. Evolutionary origins It is believed that humans evolved agent detection as a survival strategy. In situations where one is unsure of the presence of an intelligent agent such as an enemy or a predator , there is survival value in assuming its presence so that precautions can be taken. For example, if a human came across an indentation in the ground that might be a lion s footprint, it is advantageous to err on the side of caution and assume that the lion is present. ref Cite web last Henig first Robin Marantz authorlink coauthors title Darwin s God Page 4 work The Times Magazine publisher NYTimes.com date Mar 4, 2007 url http www.nytimes.com 2007 03 04 magazine 04evolution.t.html?pagewanted 4 s 20God 20by 20Robin 20Marantz 20Henig&ei 5090&en 43cfb46824423cea&ex 1330664400 20Darwin format doi accessdate Dec 21, 2010 ref Psychologists Kurt Gray and Daniel Wegner wrote blockquote cquote The high cost of failing to detect agents and the low cost of wrongly detecting them has led researchers to suggest that people possess a Hyperactive Agent Detection Device, a cognitive module that readily ascribes events in the environment to the behavior of agents. ref name BlamingGod Cite journal last Gray first Kurt authorlink coauthors Daniel Wegner title Blaming God for Our Pain Human Suffering and the Divine Mind journal Personality and Social Psychology Review volume 14 issue 1 pages 9 10 publisher Sage location date Feb 2010 url http www.scribd.com doc 32966805 Blaming God for Our Pain issn doi 10.1177 1088868309350299 id accessdate Dec 21 2010 ref blockquote Role in religion ... gods is an evolutionary Spandrel biology by product of agent detection. ref Religion Explained, by Pascal ... 1330664400 20Darwin format doi accessdate Dec 21, 2010 ref Kurt and Wegner also said that agent detection ... more details
about iterated functions another use Cycle detection graph theory In computer science , cycle detection ... of values from x sub i sub to x sub j &minus 1 sub . Cycle detection is the problem of finding i and j ... positive integer such that x sub sub x sub sub . The cycle detection problem is the task ... of an algorithm for the cycle detection problem is of importance we wish to solve the problem ... of S is unknown to the algorithm. We may view a cycle detection algorithm for this application as having ... , the cycle detection problem may be trivially solved using only function applications ... detection algorithm, applied to the sequence 2, 0, 6, 3, 1, 6, 3, 1, ... Floyd s cycle finding algorithm ... Richard P. Brent described an alternative cycle detection algorithm that, like the tortoise and hare ... space tradeoffs A number of authors have studied techniques for cycle detection that use more memory ... last Nivasch title Cycle detection using a stack journal Information Processing Letters volume 90 ... detection algorithm can use a number of function evaluations that is within an arbitrarily small ... of two values is smaller. Any cycle detection algorithm that stores at most M values from the input .... ref name fich citation first Faith Ellen last Fich contribution Lower bounds for the cycle detection .... last2 Klawe authorlink2 Maria Klawe title Improved lower bounds for the cycle detection problem journal ... 85 90044 1 . ref Applications Cycle detection has been used in many applications. Determining the cycle ... number theoretic algorithms are based on cycle detection, including Pollard s rho algorithm for integer ... qd apply cycle detection algorithms in the search for a message and a pair of Data Encryption Standard ... . ref also use cycle detection algorithms to attack DES. The technique may also be used to find a hash collision collision in a cryptographic hash function . Cycle detection may be helpful as a way ... Van Gelder title Efficient loop detection in Prolog using the tortoise and hare technique journal ... more details
Technical date September 2009 FeatureDetectionCompVisNavbox In the area of computer vision , blob detection ... see also interest point detection and corner detection . There are several motivations for studying ..., which is not obtained from edge detection edge detectors or corner detection corner detectors . In early work in the area, blob detection was used to obtain regions of interest for further processing ... analysis, blob descriptors can also be used for peak detection with application to segmentation ... have found increasingly popular use as interest point detection interest points for wide baseline image ... detection to signal the presence of elongated objects. The Laplacian of Gaussian One of the first ... and robust algorithm for blob detection. Some basic properties of blobs defined from scale space maxima ... highly useful property implies that besides the specific topic of Laplacian blob detection ... contexts , such as in corner detection , scale adaptive feature tracking Bretzner and Lindeberg 1998 ... scale information to other visual processes. Lindeberg s watershed based grey level blob detection ... blob tree can be constructed. Moreover, the grey level blob detection method was embedded in a scale ... 1991. ISSN 1101 2250. ISRN KTH NA P 91 8 SE The grey level blob detection algorithm is described .... Eklundh, Scale detection and region extraction from a scale space primal sketch , in Proc. 3rd International ... definitions for the watershed based grey level blob detection algorithm. ref ref T. Lindeberg ... of grey level blob detection and the scale space primal sketch to computer vision and medical .... See also Blob extraction Corner detection Affine shape adaptation Scale space Ridge detection Interest point detection Feature detection computer vision Harris Affine Hessian Affine Principal ... on the OpenSURF library booktitle Research into Robust Visual Feature Detection url http www.chrisevansdev.com ... year 1994 isbn 0 7923 9418 6 Cite journal author T. Lindeberg title Feature detection with automatic ... more details
for the creation of ridge detection and valley detection procedures has come from image analysis ... can be seen as a complement to natural interest point detection interest points or local extremal points ... cite journal doi 10.1023 A 1008097225773 author Lindeberg, T. title Edge detection and ridge detection ... or three dimensions the detection scale should be equal to the width of the ridge structure when measured in units of length a requirement of a match between the size of the detection filter and the image ... ridge strength measure with many applications such as blood vessel detection and road extraction ... in further detail. When detecting ridges with math gamma 1 math , however, the detection scale will be twice .... 2208, pp. 862 871 ref Ridge detection has also been furthered by Lindeberg with the introduction of math ... year 1999 month October pmid 10628954 doi 10.1109 42.811279 ref as well as to the detection of curvilinear ... N., Vaillan R., Trousset Y. title Model based detection of tubular structures in 3D images journal ... between edge detection and ridge detection The purpose of ridge detection is usually to capture ... of edge detection is usually to capture the boundary of the object. However, some literature on edge detection erroneously Citation needed date July 2008 includes the notion of ridges into the concept ... detection journal IEEE Trans Pattern Anal Mach Intell volume 8 issue 6 pages 679 698 year 1986 url ... , L xyy L y 3 , L yyy leq 0 math see the article on edge detection for more information . Notably, the edges obtained in this way are the ridges of the gradient magnitude. See also Scale space Edge detection Interest point detection Blob detection Computer vision References references External links ... more details
services. Limitations Each system used for lightning detection has its own limitations. ref cite web url http www.lightningsafety.com nlsi lhm overview2002.html title An Overview of Lightning Detection ... storms that also cause turbulence however, modern avionics systems often include lightning detection ... including detection of Wiktionary false signal false signals and poor Sensitivity electronics sensitivity ... of distance. It also reduces detection of intracloud IC flashes which generally are weaker than CG flashes. Enhanced Intracloud Lightning Detection BR The addition of an optical sensor and coincidence ... warning Detection of IC flashes is important because they typically occur from 5 to 30 minutes before ..., Donald R. Rust, W. David ref rp 248 Microburst prediction IC flash detection also provides a method ... thunderstorms, identified by IC detection and observation, make no CG flashes at all and would not be detected ... of IC detection is that the flash rate number per minute is proportional to the 5th power of the convective ..., this ability to quantify storm intensity occurs mostly through detection of IC discharges. Lightning ... of the history of improvements to the art of single sensor lightning detection are listed ... www.google.com patents?vid 4198599 Gated Lightning Detection System TD TR TR TD 4801942 TD TD Jan ... appears to be farther away. To understand this aspect of lightning detection it is necessary to know ... OS4 5MartinJ.Murphy.pdf title Cloud Lightning from the U.S. National Lightning Detection ... storm detection References reflist External links Commons category Lightning detectors http www.strikestarus.com ... resources Lightning Detection.pdf Lightning detection guide PDF from the U.S. ... Lightning origin and research on detection from space from NASA http avcan.blogspot.com 2005 08 canadian atc weather radar.html Blog posting about lightning detection and air traffic control http www.2pi.com ... detection network http www.seaerospace.com bfg wx500pg.pdf WX 500 Stormscope Series II Weather Mapping ... more details
Lie detection , also referred to as deception detection, uses questioning techniques along with technology that records physiological functions to ascertain truth and falsehood in response. It is commonly used by law enforcement and is an inexact science. There are a wide variety of technologies available for this purpose. ref name Parliament cite web title Detecting Deception url http www.parliament.uk briefing papers POST PN 375 publisher Parliamentary Office of Science and Technology UK accessdate 26 April 2012 ref The most common and long used measure is the polygraph. However, it is proposed that facial expressions, body language, and linguistics may be better indicators, because the commonly used polygraph is considered by many to be unreliable. ref name Adelson cite journal last Adelson first Rachel title Detecting Deception journal Monitor on Psychology year 2004 month July volume ... combined with voice and speech measures, it reaches detection accuracy rates of up to 90 percent ... on them and making themselves look innocent. ref name Preston Polygraph Lie detection commonly involves ... and comparing them to questions where the answers are not known. Critics claim that lie detection ... perceptual processes they are integral to the detection of deception. ref name Heussen EEG Electroencephalography ... magnetic resonance imaging fMRI have shown that it has potential to be used as a method of lie detection ... The case against fMRI lie detection Spence, S. 2008 . Devil s advocate The case against fMRI lie detection. Legal and Criminological Psychology. 13 1 , 11 25 15 . ref There are currently two ... that fMRI based lie detection still requires further development. ref http mythbustersresults.com .... Non Verbal Behaviour Non invasive lie detection using non verbal behaviour is performed by the Silent ... computer vision studies geared towards automating the process of lie detection. ref T. Pfister, X ... Talker Lie Detector References reflist 2 Category Lie detection fa nl Leugendetectie ja ... more details
and businesses. Overview An electronic motion detector contains a motion sensor that transforms the detection of motion into an electric signal. This can be achieved by measuring optical changes in the field of view. Most motion detectors can detect up to nowrap 15 25 meters 50 80ft . A motion detector ... activated will reduce nuisance alarms, but may also cause the probability of detection to decrease. See also Smoke detector Heat detector Pickup music technology MotiondetectionMotion controller for video ... How to build your own motion detector http www.xandem.com motiondetection Xandem Tomographic ...Image Motion detector.jpg thumb 150px A motion detector attached to a garage Unreferenced date March 2007 A motion detector is a device for motiondetection . That is, it is a device that contains a physical mechanism or electronic sensor that quantifies motion physics motion that can be either integrated ... it detects motion. Such a detector may also trigger a red light camera . Motion detectors have found great application in domestic and commercial applications. Some of these applications include motion activated outdoor lighting systems, motion sensor street lamps and motion sensor lanterns. ref http www.smart surveillance tips.com motion sensor light.html Motion Sensor Light Three Excellent Applications of Energy Efficient Motion Sensor Lights ref An occupancy sensor is a motion detector that is integrated with a timing device. It senses when motion has stopped for a specified time period ... There are basically four types of sensors used in motion detectors spectrum Passive infrared ... surrounded by mesh network nodes. Dual technology motion detectors Many modern motion detectors ... model to maximize accuracy and reduce energy usage. PIR draws less energy than microwave detection ... sensor. If the latter also picks up an intruder, then the alarm is sounded. As interior motion detectors do not see through windows or walls, motion sensitive outdoor lighting is often recommended to enhance ... more details
Biological motion is a term used by social and cognitive neuroscientists to refer to the unique visual phenomenon of a moving, animate object. Often, the stimuli used in biological motion experiments are just a few moving dots that reflect the motion of some key joints of the moving organism. Gunnar Johansson psychophysicist Gunnar Johansson invented these point light displays ref cite journal author G. Johansson title Visual perception of biological motion and a model for its analysis journal Percept. Psychophys. volume 14 year 1973 pages 201 211 doi 10.3758 BF03212378 issue 2 ref . History Early work suggested that the brain may contain mechanisms specialised for the detection of other humans from motion signals, but over the years this claim has been scaled down to the point where some authors now suggest that we have more generalised detectors tuned simply to the characteristic signal generated by the feet of a locomoting animal. ref cite journal title The Inversion Effect in Biological Motion Perception Evidence for a Life Detector ? journal Current Biology volume 16 issue 8 pages 821 824 author N . Troje , C . Westhoff doi 10.1016 j.cub.2006.03.022 pmid 16631591 year 2006 ref Psychophysics Perception of biological motion depends both on the motions of individual dots and the configuration ... is presented upside down. ref Mirenzi A, Hiris E, 2011, The Thatcher effect in biological motion ... for biological motion perception ref Grossman, E., & Blake, R. 2002 . Brain areas active during visual perception of biological motion. Neuron, 35, 1157 1165. ref . Also, premotor cortex is important ..., Wilson, S.M., Hagler Jr., D.J., Bates, E., & Sereno, M.I. 2004 Point light biological motion perception ... biological motion perception included the superior temporal lobe sulcus neuroanatomy sulcus and premotor ... ref . A recent study on a patient with developmental agnosia found intact biological motion, but deficient perception of non biological form from motion ref cite pmid 21237181 ref See also Motion ... more details
motion, then the pixel intensity is likely to change over time. Methods Motiondetection incomplete section date November 2011 One of the simplest type of motion analysis is to detect image points that refer ... pixels, and label objects. Motiondetection can be done using several methods the two main groups ...Cleanup date April 2008 Motion analysis is a topic in computer vision , image processing , and machine ... motion in the images. In some applications, the camera is fixed relative to the scene and objects ... is moving, and in some cases both the camera and the scene are moving. The motion analysis processing can in the simplest case be to detect motion, i.e., find the points in the image where something ... the magnitude and direction of the motion of every point in the image. The information that is produced ..., but then depends also on the neighboring images. This means that motion analysis can produce time time dependent information about motion. Applications of motion analysis can be found in rather diverse ... through a small hole to form an image. Image Motionfield.svg thumb upright 1.5 The motion field that corresponds to the relative motion of some 3D point. A video camera can be seen as an approximation ... relative to the camera, and if this relative position changes it corresponds to a relative motion in 3D . It is a relative motion since it does not matter if it is the scene point, or the camera, or both ... is able to detect that some motion has happened. By projecting the relative 3D motion of all visible points back into the image the result is the motion field , describing the apparent motion of each ... of this observation is that if the relative 3D motion of some scene points are along their projection lines, the corresponding apparent motion is zero. The camera measures the intesity of light ... assumption of motion analysis is that the light reflected from the scene points does not vary over ... one as a consequence of the apparent motion. Another common assumption is that there is a fair ... more details
are shown. They originate from a common source in visual cortex. The dorsal stream is responsible for detection of location and motion. Motion perception is the process of inferring the speed and direction ... processing. Motion perception is studied by many disciplines, including psychology i.e. visual perception ... to perceive motion is called akinetopsia and it may be caused by a lesion to Cerebral cortex ... studies of a patient who could not see motion, seeing the world in a series of static frames instead, suggested that visual area V5 in humans is homologous to motion processing area MT in primates. ref name Hess1989 cite journal title The motion blind patient low level spatial and temporal filters ... pmid 2723744 ref ref name Baker1991 cite journal title Residual motion perception in a motion blind ... of Neuroscience year 1991 volume 11 issue 2 pages 454 461 pmid 1992012 ref First order motion perception ... ref First order motion perception refers to the perception of the motion of an object that differs in luminance from its background, such as a black bug crawling across a white page. This sort of motion can be detected by a relatively simple motion sensor designed to detect a change in luminance ... ref motion energy sensors, ref name AdelsonBergen cite journal author Adelson, E.H., & Bergen, J.R. year 1985 title Spatiotemporal energy models for the perception of motion journal J Opt Soc Am A pmid ... doi 10.1364 JOSAA.2.000300 ref These sensors detect motion by spatio temporal correlation and are plausible models for how the visual system may detect motion. There is still considerable debate regarding the exact nature of this process. First order motion sensors suffer from the aperture problem , which means that they can detect motion only perpendicular to the Orientation geometry orientation of the contour that is moving. Further processing is required to disambiguate true Motion perception Motion integration global motion direction. ref cite journal url http www.doiserbia.nb.rs img doi ... more details
wiktionary motion wiktionary design Motion design may refer to Motion graphic design , designing the motion of graphics Interactive design , designing for interactivity via user motion disambig ... more details
Unreferenced date November 2011 Early visual boundary detection refers to the process of detecting contours separating image regions that are coherent with respect to cues such as brightness, color, motion, texture and stereo disparity, not taking into account high level object information. Category Vision Optics stub ... more details
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