VGSPHERE

VisionX V4
NAME

vgsphere - Spherical model simulator

SYNOPSIS

vgsphere [of] [s=] [c=] [x=] [y=] [z=] [bb=] [i=] [hi=] [g=] [xz=] [-im] [r=] [-a] [bg=] [fg=] [-f] [-v]

DESCRIPTION

vgshpere generates a spherical model gray level image. The sphere parameters are specified using [c=] (XYZ, 3D subvoxel accuracy center point) and [r=] (radius of the sphere). Foreground and background voxels of the sphere image are set [fg=] anbd [bg=] to respectively. The sphere partial voxel intensity are esitmated by subpartitioning the voxel in to [i=] intervals. If an anisotropic sphere is needed, the corresponding xy and z plane resolution have to be specified using the [xz=] input argument.

OPTIONS

[of=]

output simulated sphere image

[s=]

size for x and y dimensions

[c=]

sphere center point 3D coordinates (X,Y,Z)

[x=]

x image size (default 8)

[y=]

y image size (default 8)

[z=]

z image size (default 8)

[bb=]

bounding box parameters

[i=]

number of interpolation (partitioning) steps

[hi=]

max output value

[g=]

grid lines

[xz=]

xy (inplane) and axial resolution (xs,zs)

[-im]

impluse test image

[r=]

radius of the sphere in pixel units

[-a]

autoscale the image

[bg=]

background voxel value

[fg=]

foreground voxel value

[-f]

print out frame numbers with nonzero intensity voxels

[-v]

verbose flag

AUTHOR

Anthony Reeves and Andinet Asmamaw