svdcmp

This will determine a set of orthogonal basis images from a set of aligned particles

svdcmp <images> <basis> [n=<n basis>] [mask=<radius>] [jacobi]

Parameters:


<images>Input file, images to be analyzed
<basis>Output file, set of orthogonal basis images
[n=<n basis>]Number of basis images to output (<= number of input images)
[mask=<radius>]Mask radius in pixels (use the smallest reasonable value)
[jacobi]Uses Jacobi method, much slower, but more accurate

Usage:

svdcmp proj.hed basis.hed

Description

This program is designed to produce a set of orthogonal basis images to use for noise reduction on raw particles. Typically this program will be used on a set of projections covering the asymmetric triangle, but with no in-plane rotation. The resulting basis images can then be applied to an (aligned) noisy image to act as a sort of filter.


EMAN Manual page, generated Fri Feb 8 16:12:25 2002