
findeuler
This program assigns Euler angles to raw particles by projection matching
findeuler <raw-images> <refrences> [sigfilt] [frac=<num>/<denom>] [mask=<radius>] [imask=<radius>] [writeali] [verbose]
<raw-images> | The file containing the raw particles to be oriented |
<refrences> | Projections to be used as references |
[sigfilt] | Apply a real-space filter to use only intense data in the classification |
[frac=<num>/<denom>] | Operate only on a fraction of the raw images |
[mask=<radius>] | Circular mask |
[imask=<radius>] | Circular innner mask |
[writeali] | Write the aligned images over the original images |
[verbose] | More verbose output during classification |
Usage:
findeuler raw.img proj.img mask=42
Description
When raw images are classified, there may be classification errors. Sometimes the
misclassified images may outnumber the correctly classified images in specific classes.
This means the class average generated from these images may not have the correct
Euler angles. Since the class average is much less noisy, the Euler angle assignment
is much more accurate for these images. This program is used to redetermine the
Euler angles for lower noise class averages. It could potentially be used to assign
Euler angles to individual particles as well, although this practice is not part
of the standard reconstruction procedure in EMAN.
EMAN Manual page, generated Wed Mar 7 13:44:18 2001