Bsoft function

img_ctf_fit_astigmatism

Source:

src/img/img_ctf.c

Description:

Fits the astigmatism with a given defocus, baseline and envelope.

Algorithm: 

	A radial power spectrum is calculated and the baseline subtracted.

	The defocus deviation starts from a low value to get an estimate of

	the astigmatism angle. The defocus deviation is modified nased on

	the direction of improvements in the fit, at each iteration 

	narrowing the angular search for the astigmatism angle.

	The new parameters are written into the Bimage structure.

Arguments:

Bimage* pimage structure.
CTF* em_ctfCTF parameter structure.
float loreslow resolution limit.
float hireshigh resolution limit

Returns:

double objective measure (larger is better).

Prototype:

double img_ctf_fit_astigmatism(Bimage* p, CTF* em_ctf, float lores, float hires)

Functions used:

bfree

Other objects included:

struct Bimage
struct Bmarker
class Complex

Generated by bdoc.pl on Mon Jun 15 11:47:49 2009

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