mg_ctf_focal.h File Reference

Header file for CTF (contrast transfer function) functions. More...

#include "rwimg.h"
#include "ctf.h"

Functions
Bimage *	img_ctf_focal_series (CTFparam &cp, double def_min, double def_max, double def_inc, Vector3< long > size, Vector3< double > sam, double lores, double hires)
Bimage *	img_ctf_focal_fit (Bimage *p, CTFparam &cp, double hires, double lores, double Bfactor, long maxiter)
	Fits the CTF to focal series power spectra. More...
Bimage *	img_fspace_extract_sphere (Bimage *p, double volt)
	Extracts a sphere corresponding to a given acceleration voltage. More...

Detailed Description

Header file for CTF (contrast transfer function) functions.

Author

Bernard Heymann

Date

Created: 20000426

Modified: 20230127

Function Documentation

img_ctf_focal_fit()

Bimage * img_ctf_focal_fit	(	Bimage *	p,
		CTFparam &	cp,
		double	hires,
		double	lores,
		double	Bfactor,
		long	maxiter
	)

Fits the CTF to focal series power spectra.

Parameters

*p	Focal series.
&cp	CTF parameters.
hires	High resolution limit.
lores	Low resolution limit.
Bfactor	B-factor for weighting.
maxiter	Maximum number of iterations.

Returns

double Correlation coefficient.

The image should be 3D with the third sampling interval the
change in focus per 2D image.

img_ctf_focal_series()

Bimage * img_ctf_focal_series	(	CTFparam &	cp,
		double	def_min,
		double	def_max,
		double	def_inc,
		Vector3< long >	size,
		Vector3< double >	sam,
		double	lores,
		double	hires
	)

img_fspace_extract_sphere()

Bimage * img_fspace_extract_sphere	(	Bimage *	p,
		double	volt
	)

Extracts a sphere corresponding to a given acceleration voltage.

Parameters

*p	Focal series.
volt	Acceleration voltage (V).

Returns

Bimage* Image with data from the sphere.