scispace - formally typeset

Topic

Zernike polynomials

About: Zernike polynomials is a(n) research topic. Over the lifetime, 4271 publication(s) have been published within this topic receiving 68621 citation(s).
Papers
More filters

Journal ArticleDOI
Robert J. Noll1Institutions (1)
Abstract: This paper discusses some general properties of Zernike polynomials, such as their Fourier transforms, integral representations, and derivatives. A Zernike representation of the Kolmogoroff spectrum of turbulence is given that provides a complete analytical description of the number of independent corrections required in a wave-front compensation system.

2,471 citations


Journal ArticleDOI
Abstract: Two-dimensional image moments with respect to Zernike polynomials are defined, and it is shown how to construct an arbitrarily large number of independent, algebraic combinations of Zernike moments that are invariant to image translation, orientation, and size. This approach is contrasted with the usual method of moments. The general problem of two-dimensional pattern recognition and three-dimensional object recognition is discussed within this framework. A unique reconstruction of an image in either real space or Fourier space is given in terms of a finite number of moments. Examples of applications of the method are given. A coding scheme for image storage and retrieval is discussed.

2,268 citations


Journal ArticleDOI
Alireza Khotanzad1, Y.H. Hong1Institutions (1)
TL;DR: A systematic reconstruction-based method for deciding the highest-order ZERNike moments required in a classification problem is developed and the superiority of Zernike moment features over regular moments and moment invariants was experimentally verified.
Abstract: The problem of rotation-, scale-, and translation-invariant recognition of images is discussed. A set of rotation-invariant features are introduced. They are the magnitudes of a set of orthogonal complex moments of the image known as Zernike moments. Scale and translation invariance are obtained by first normalizing the image with respect to these parameters using its regular geometrical moments. A systematic reconstruction-based method for deciding the highest-order Zernike moments required in a classification problem is developed. The quality of the reconstructed image is examined through its comparison to the original one. The orthogonality property of the Zernike moments, which simplifies the process of image reconstruction, make the suggest feature selection approach practical. Features of each order can also be weighted according to their contribution to the reconstruction process. The superiority of Zernike moment features over regular moments and moment invariants was experimentally verified. >

1,900 citations


Journal ArticleDOI
TL;DR: It is shown that with this method, using a Hartmann-Shack wave-front sensor, one can obtain a fast, precise, and objective measurement of the aberrations of the eye.
Abstract: A Hartmann-Shack wave-front sensor is used to measure the wave aberrations of the human eye by sensing the wave front emerging from the eye produced by the retinal reflection of a focused light spot on the fovea. Since the test involves the measurements of the local slopes of the wave front, the actual wave front is reconstructed by the use of wave-front estimation with Zernike polynomials. From the estimated Zernike coefficients of the tested wave front the aberrations of the eye are evaluated. It is shown that with this method, using a Hartmann-Shack wave-front sensor, one can obtain a fast, precise, and objective measurement of the aberrations of the eye.

1,240 citations


Journal ArticleDOI
TL;DR: A new set of orthogonal moment functions based on the discrete Tchebichef polynomials is introduced, superior to the conventional Orthogonal moments such as Legendre moments and Zernike moments, in terms of preserving the analytical properties needed to ensure information redundancy in a moment set.
Abstract: This paper introduces a new set of orthogonal moment functions based on the discrete Tchebichef polynomials. The Tchebichef moments can be effectively used as pattern features in the analysis of two-dimensional images. The implementation of the moments proposed in this paper does not involve any numerical approximation, since the basis set is orthogonal in the discrete domain of the image coordinate space. This property makes Tchebichef moments superior to the conventional orthogonal moments such as Legendre moments and Zernike moments, in terms of preserving the analytical properties needed to ensure information redundancy in a moment set. The paper also details the various computational aspects of Tchebichef moments and demonstrates their feature representation capability using the method of image reconstruction.

789 citations


Network Information
Related Topics (5)
Lens (optics)

156.4K papers, 1.2M citations

83% related
Image processing

229.9K papers, 3.5M citations

83% related
Optical fiber

167K papers, 1.8M citations

81% related
Laser

353.1K papers, 4.3M citations

80% related
Pixel

136.5K papers, 1.5M citations

79% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20224
2021123
2020188
2019218
2018187
2017195

Top Attributes

Show by:

Topic's top 5 most impactful authors

Augustus J. E. M. Janssen

26 papers, 564 citations

Xiangzhao Wang

25 papers, 214 citations

Jannick P. Rolland

18 papers, 294 citations

Kjetil Dohlen

17 papers, 288 citations

Chandan Singh

17 papers, 280 citations