VNFATVisionX V4 NAME

vnfat − noise aware fat segmentation of a CT image

SYNOPSIS

fatsegmentation if=<infile> ig=<> ig2=<> th=<> th2=<> of=<ofile>

DESCRIPTION

vnfat incorporates an estimate of noise to achieve a better fat segmentation. The main input is an image with a local noise estimate. The two secondary inputs are fat segementations with different levels of filtering. Filt1 should be a fat segmentation with preprocessing of a 5x5x5 mean filter and Filt2 should be fatsegmenataion with preprocessing of a 3x3x3 mean filter. Th is a low threshold. Under this threshold the fat segmentation from filt2 is used. Above th the fat segmentation from filt1 is used. Th2 is a high threshold, above which no segmenataion is attemped. Recommended are th=90 and th2=400.

CONSTRAINT

All input file must be short.

OPTIONS

if=

input noise estimate image

of=

fat segmentation output

ig=

large filtered input (recommended a 5x5x5 mean)

ig2=

small filtered input (recommended a 3x3x3 mean)

th=

low threshold

th2=

high threshold

SEE ALSO

vsfas

AUTHOR

J. Padgett