VLSDEV

VisionX V4
NAME

vlsdev − computes the standard deviation in local labeled regions of an image.

SYNOPSIS

localdeviation if=<infile> ig=<> zs=<> xs=<> yz=<> of=<ofile>

DESCRIPTION

vlsdev computes the standard deviation in labeled regions with windows of size determined by xs, ys, zs. The infile2 is a labeled image. The standard deviation in each window is only computed with pixels in the specified window with the same label as the current pixels. This, for example, can be used to compute local standard deviation in homogenous regions of tissue.

CONSTRAINT

if must be a short and ig must be a byte.

OPTIONS

if=

input image

of=

output image

ig=

labeled image for same regions in which the standard deviation is to be computed. Regions with a label of 0 will not be considered for the computation.

zs=

z size of the window in which the local standard deviation is to be computed.

ys=

y size of the window in which the local standard deviation is to be computed.

xs=

x size of the window in which the local standard deviation is to be computed.

SEE ALSO

vsfas, vnfat, vinterp

AUTHOR

J. Padgett