Name

Usage

Input

image
input image, it can be real or complex
ctf

an CTF object, see CTF_info for description.

pad
apply padding with zeroes in real space to twice the size before CTF application (Default is True, if set to False, no padding, if input image is Fourier, the flag has no effect).
sign
sign of the CTF. If cryo data had inverted contrast, i.e., images were multiplied by -1 and particle projections appear bright on dark background, it has to be set to 1. To have the ctf as per definition with first extremum negative, set sign to -1. (Default is 1).
binary
phase flipping if set to 1 (default is 0).

Output

output
image multiplied in Fourier space by the CTF, the output image has the same format as the input image.

Author / Maintainer

Zhong Huang

Keywords

category 1
FILTER
category 2
FOURIER

Files

filter.py

See also

sxwelch_psp

Maturity

stable
works for most people, has been tested; test cases/examples available.

Bugs

None. It is perfect.

filt_ctf (last edited 2013-07-01 13:12:35 by localhost)