h-maxima transform is a morphological operation used to filter local maxima of an image based on local contrast information. First, all local maxima are...
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= f ( x ) ∨ g ( x ) {\displaystyle (f\vee g)(x)=f(x)\vee g(x)} . H-maxima transform Map algebra "International Symposium on Mathematical Morphology and...
23 KB (3,307 words) - 09:17, 20 July 2025
obtained as local maxima in a so-called accumulator space that is explicitly constructed by the algorithm for computing the Hough transform. Mathematically...
34 KB (4,859 words) - 16:20, 29 March 2025
Hadamard transform (also known as the Walsh–Hadamard transform, Hadamard–Rademacher–Walsh transform, Walsh transform, or Walsh–Fourier transform) is an...
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parameter space and then selecting local maxima in an accumulator matrix. It is a specialization of the Hough transform. In a two-dimensional space, a circle...
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uses the maxima of the absorbance band at about 5,200 cm−1 which correlates with the true water content in the material. Discrete Fourier transform – Function...
37 KB (4,802 words) - 00:54, 11 July 2025
The generalized Hough transform (GHT), introduced by Dana H. Ballard in 1981, is the modification of the Hough transform using the principle of template...
16 KB (2,327 words) - 08:49, 27 May 2025
The Hilbert–Huang transform (HHT) is a way to decompose a signal into so-called intrinsic mode functions (IMF) along with a trend, and obtain instantaneous...
51 KB (6,197 words) - 19:58, 20 July 2025
The wavelet transform modulus maxima (WTMM) is a method for detecting the fractal dimension of a signal. More than this, the WTMM is capable of partitioning...
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series of maxima and minima. There are regularly spaced "principal maxima", and a number of much smaller maxima in between the principal maxima. The principal...
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Hough transform [H theta rho] = hough(BW); % Find local maxima of Hough transform numpeaks = 19; thresh = ceil(0.1 * max(H(:))); P = houghpeaks(H, numpeaks...
18 KB (2,031 words) - 02:05, 22 January 2025
The scale-invariant feature transform (SIFT) is a computer vision algorithm to detect, describe, and match local features in images, invented by David...
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{3\pi }{K}},{\frac {5\pi }{K}}\cdots \,\end{aligned}}} The levels of the maxima and minima are always equidistant from 1. When α = ± 1 , {\displaystyle...
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Stéphane Mallat (category Articles with hCards)
(with Sifen Zhong) the wavelet transform modulus maxima method for image characterization, a method that uses the local maxima of the wavelet coefficients...
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(ii) methods based on local extrema, which are based on finding the local maxima and minima of the function. With the more recent terminology used in the...
28 KB (4,107 words) - 06:23, 15 July 2025
180^{\circ }} . From the definition of ψ {\displaystyle \psi } , we see that maxima will occur whenever 2 π n = 2 π λ d × ( cos θ − cos θ T ) {\displaystyle...
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the method of Lagrange multipliers is a strategy for finding the local maxima and minima of a function subject to equation constraints (i.e., subject...
55 KB (8,403 words) - 14:27, 23 July 2025
reconstruction. It is partly inspired by the scale-invariant feature transform (SIFT) descriptor. The standard version of SURF is several times faster...
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side of the line centre. Component peak maxima in the spectrum are minima in the 2nd. derivative spectrum and maxima in the 4th. derivative spectrum Hollas...
25 KB (2,986 words) - 13:06, 24 May 2025
individual amplitudes. Hence, diffraction patterns usually have a series of maxima and minima. In the modern quantum mechanical understanding of light propagation...
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preferred for book printing. Fonts in Use reports that Gert Wunderlich's Maxima (1970), for Typoart, was "maybe the first sans serif to feature small caps...
32 KB (3,260 words) - 08:42, 26 July 2025
Whether a singularity can ever be called a mode Whether cases with two maxima should be called bimodal The median of the beta distribution is the unique...
245 KB (40,559 words) - 20:35, 30 June 2025
function E(ω) over the entire set of frequencies Ω using (2). Look for local maxima of |E(m)(ω)| on the set Ω. If max(ω∈Ω)|E(m)(ω)| > δ(m), then update the...
14 KB (1,798 words) - 19:43, 13 December 2024
crossings of the normalized sinc occur at non-zero integers. The local maxima and minima of the unnormalized sinc correspond to its intersections with...
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some cultivars of Cucurbita argyrosperma, Cucurbita ficifolia, Cucurbita maxima, Cucurbita moschata, and Cucurbita pepo. C. pepo pumpkins are among the...
55 KB (4,437 words) - 08:52, 12 July 2025
deriving block maxima (minima) series as a preliminary step. In many situations it is customary and convenient to extract the annual maxima (minima), generating...
29 KB (2,872 words) - 09:08, 19 July 2025
realized nonlinearly on the triplet of pions – which, however, still transform linearly under isospin SU ( 2 ) V ≃ SO ( 3 ) {\displaystyle \...
20 KB (3,269 words) - 17:39, 18 May 2025
et minimam (a Latin treatise circulated in France c. 1636 ) to calculate maxima and minima of functions, tangents to curves, area, center of mass, least...
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Edge detection (section Phase Stretch Transform (PST))
such as the gradient magnitude, and then searching for local directional maxima of the gradient magnitude using a computed estimate of the local orientation...
36 KB (5,163 words) - 02:49, 30 June 2025
Riesz–Thorin theorem (section The Hilbert transform)
the Hilbert transform of the simple functions 1(−1,1)(x) and 1(0,1)(x) − 1(0,1)(−x). We can show, however, that ( H f ) 2 = f 2 + 2 H ( f H f ) {\displaystyle...
39 KB (6,116 words) - 16:44, 27 March 2025