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Pseudo-Zernike polynomials : ウィキペディア英語版
Pseudo-Zernike polynomials
In mathematics, Pseudo-Zernike polynomials are well known and widely used in the analysis of optical systems. They are also widely used in image analysis as shape descriptors.
== Definition ==
They are an orthogonal set of complex-valued polynomials
defined as :

V_(x,y) = R_(x,y)e^)}

where x^2+y^2\leq 1, n\geq 0, |m|\leq n and orthogonality on the unit disk is
given as:

\int_0^\int_0^1 r ()^
* \times
V_(r\cos\theta,r\sin\theta)drd\theta =
\frac\delta_\delta_,

where the star means complex conjugation, and

r^2 = x^2+y^2, x=r\cos\theta, y=r\sin\theta

are the standard transformations between polar and Cartesian coordinates.
The radial polynomials R_ are defined as:

R_(x,y) = \sum_^D_(x^2+y^2)^

with integer coefficients

D_ = (-1)^s\frac.


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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