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In the Hough transform, a main idea is to consider the characteristics of the straight line not as image points ( x < sub > 1 </ sub >, y < sub > 1 </ sub >), ( x < sub > 2 </ sub >, y < sub > 2 </ sub >), etc., but instead, in terms of its parameters, i. e., the slope parameter m and the intercept parameter b. Based on that fact, the straight line y = mx + b can be represented as a point ( b, m ) in the parameter space.
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Hough and transform
* Hough transform
** Arbitrary shapes ( generalized Hough transform )
* Hough transform for detecting straight lines, circles or ellipses from edge points
The Hough transform () is a feature extraction technique used in image analysis, computer vision, and digital image processing.
This voting procedure is carried out in a parameter space, from which object candidates are obtained as local maxima in a so-called accumulator space that is explicitly constructed by the algorithm for computing the Hough transform.
The classical Hough transform was concerned with the identification of lines in the image, but later the Hough transform has been extended to identifying positions of arbitrary shapes, most commonly circles or ellipses.
The Hough transform as it is universally used today was invented by Richard Duda and Peter Hart in 1972, who called it a " generalized Hough transform " after the related 1962 patent of Paul Hough.
The transform was popularized in the computer vision community by Dana H. Ballard through a 1981 journal article titled " Generalizing the Hough transform to detect arbitrary shapes ".
The purpose of the Hough transform is to address this problem by making it possible to perform groupings of edge points into object candidates by performing an explicit voting procedure over a set of parameterized image objects ( Shapiro and Stockman, 304 ).
The simplest case of Hough transform is the linear transform for detecting straight lines.
However, one faces the problem that vertical lines give rise to unbounded values of the parameters m and b. For computational reasons, it is therefore better to use a different pair of parameters, denoted and ( theta ), for the lines in the Hough transform.
This representation makes the Hough transform conceptually very close to the two-dimensional Radon transform.
* The Hough transform, when written in a continuous form, is very similar, if not equivalent, to the Radon transform.
Hough and is
`` It is a duty '', said Hough, `` not to let pass this opportunity of protesting against the methods of taking and printing testimony in Equity, current in this circuit ( and probably others ), excused if not justified by the rules of the Supreme Court, especially to be found in patent causes, and flagrantly exemplified in this litigation.
The fundamental difficulty of which the Selden case was `` a striking ( though not singular ) example '', concluded Hough, `` will remain as long as testimony is taken without any authoritative judicial officer present, and responsible for the maintenance of discipline, and the reception or exclusion of testimony ''.
J. N. Hough suggests that Plautus ’ s use of Greek is for artistic purposes and not simply because a Latin phrase will not fit the meter.
The University of Louisiana-Monroe owns a one-hundred acre outdoor classroom, located near Hough Bend, that is used primarily for tree identification.
* Hough's Neck is a northeastern peninsular community named for Atherton Hough, who was granted the land in 1636 for use as a farm and orchard.
Huntersville is served by Charlotte-Mecklenburg Schools, with students from Huntersville attending Hough High School ( which opened in the fall of 2010 ), Hopewell High School and North Mecklenburg High School.
'< p >" Over three centuries later, Walter Hough ( 1912 ) wrote: ' There is a great confusion as to the identity of copal, the name, according to some writers, being used to cover a number of gums.
Phillips is presently reported to be in a relationship with US show jumping rider Lauren Hough, at 35 some four months younger than his son.
When the coefficients are separated into their height and latitude components, the height dependence takes the form of propagating or evanescent waves ( depending on conditions ), while the latitude dependence is given by the Hough functions.
The ( r, θ ) plane is sometimes referred to as Hough space for the set of straight lines in two dimensions.
where s is the distance of L from the origin and is the angle the normal vector to L makes with the x axis ( see also Hough space ).
The first hoop skirt in the US is from 1846, patent number 4, 584 of David Hough, Jr.
Delayed onset muscle soreness was first described in 1902 by Theodore Hough, who concluded that this kind of soreness is " fundamentally the result of ruptures within the muscle ".
Hough and consider
) Ms. Hough asked Professor Wimsatt a question that still resonates today: " Is literature taught in complete isolation from its author, Mr. Wimsatt -- don't you consider the person who wrote it?
Hough and line
No railway line was allowed through: the nearest station was at the southern end of Alexandra Road South, designed to serve the aerodrome at Hough End.
With EBSD software, pattern bands are typically detected via a mathematical routine using a modified Hough transform, in which every pixel in Hough space denotes a unique line / band in the EBSP.
Passing south-west, it crosses Frinkley Lane, also the Viking Way, crosses Hough Road along the southern edge of Grove Plantations, and the Grantham-Sleaford railway line ( Poacher Line ).
Hough Green railway station, on the Liverpool to Warrington line, is away.
Hough and points
They then danced a Mambo against every other couple and received 9 points, losing to future fourth place finalists Joanna Krupa and Derek Hough, both of whom were tough competition for them.
Hough and <
< tr >< td > 2007 </ td >< td > American Association </ td >< td > Stan Hough </ td ></ tr >
< tr bgcolor ="# eeeeee ">< td > 2006 </ td >< td > American Association </ td >< td > Stan Hough </ td ></ tr >
with p < sub > o </ sub > a pressure amplitude, Θ < sub >- 3 </ sub >< sup > 1 </ sup > a Hough function describing the latitude distribution of the atmospheric pressure on the ground, θ the geographic co-latitude, t the time of year, t < sub > o </ sub > a time delay, ν < sub > A </ sub > = 1. 003 the normalized frequency of one solar year, λ the longitude, and λ < sub > o </ sub > the longitude of maximum pressure.
Hough and >
It was Lindzen, in his 1966 paper, On the theory of the diurnal tide ,< ref > who showed that the solution set of Hough functions given by Bernard Haurwitz to Laplace's tidal equation was incomplete: modes with negative equivalent depths had been omitted.
Hough and 1
* Piano Concerto No. 1 played by Stephen Hough with the City of Birmingham Symphony Orchestra conducted by Lawrence Foster.
* Heliotes, Steven, Notes for Hyperion CDA66790, Scharwenka: Piano Concerto No. 4 ; Sauer: Piano Concerto No. 1 ; Stephen Hough, pianist ; City of Birmingham Symphony Orchestra conducted by Lawrence Foster ( London: Hyperion records, 1995 ).
Robert Mann's solo discography includes Béla Bartók's Solo Violin Sonata, the Sonata No. 1 for violin and piano, and Contrasts ; Beethoven's complete violin sonatas ( with pianist Stephen Hough ); many of Mozart's violin sonatas, with pianist Yefim Bronfman ; and Elliott Carter's Duo for Violin and Piano, with Christopher Oldfather.
Hough and 2
* Stephen Hough and the City of Birmingham Symphony Orchestra conducted by Sakari Oramo on Hyperion Records CDA 67331 / 2
During a 25-season career, Hough compiled 216 wins, 2, 362 strikeouts and a 3. 75 earned run average.
0.668 seconds.