Zernike polynomials

zernike(mask, index[, normalize, order, ...])	Compute the circular Zernike polynomial for a given mask.
zernike_compose(mask, coeffs[, normalize, ...])	Create an OPD based on the supplied Zernike coefficients.
zernike_fit(opd, mask, modes[, normalize, ...])	Fit a Zernike basis set to an OPD.
zernike_remove(opd, mask, modes[, order, ...])	Fit and remove a Zernike basis set from an OPD.
zernike_basis(mask, modes[, vectorize, ...])	Compute a Zernike basis set for a given mask.
zernike_coordinates(mask[, shift, rotate])	Compute the Zernike coordinate system for a given mask.