X-Ray Microscope PSF class

Collaboration diagram for X-Ray Microscope PSF class:

Classes
class	XRayPSF

Enumerations
enum	PsfxrAdjust { PSFXR_STD, PSFXR_INT, PSFXR_ZPAD }
enum	PsfType { IDEAL_FRESNEL_LENS, ANALYTIC_ZP }

Functions
void	lensPD (MultidimArray< std::complex< double > > &Im, double Flens, double lambda, double dx, double dy)
	Generate the quadratic phase distribution of a ideal lens. More...

Detailed Description

Enumeration Type Documentation

PsfType

enum PsfType

Enumerator
IDEAL_FRESNEL_LENS
ANALYTIC_ZP

Definition at line 54 of file psf_xr.h.

{
    IDEAL_FRESNEL_LENS,
    ANALYTIC_ZP
};

PsfxrAdjust

enum PsfxrAdjust

This enum defines which method should be used to correct the constraint due to Nyquist limit in diffraction.

Enumerator
PSFXR_STD
PSFXR_INT	Standard mode, image size does not changes.
PSFXR_ZPAD	Increasing the image size by Interpolating. Increasing the image size by Zeropadding

Definition at line 41 of file psf_xr.h.

{
    PSFXR_STD, 
    PSFXR_INT, 
    PSFXR_ZPAD 
} ;

Function Documentation

lensPD()

void lensPD	(	MultidimArray< std::complex< double > > &	Im,
		double	Flens,
		double	lambda,
		double	dx,
		double	dy
	)

Generate the quadratic phase distribution of a ideal lens.

Definition at line 814 of file psf_xr.cpp.

{

    double x;
    double y;
    double phase;

    Im.setXmippOrigin();

    double K = (-PI / (lambda * Flens));

    for (int i = STARTINGY(Im); i <= FINISHINGY(Im); ++i)
    {
        y = dy * i;
        double y2 =  y * y;

        for (int j = STARTINGX(Im); j <= FINISHINGX(Im); ++j)
        {
            x = dx * j;
            phase = K * (x * x + y2);
            A2D_ELEM(Im,i,j) = std::complex<double>(cos(phase),sin(phase));
        }
    }
}