VBGROW | VisionX V4 |
vbgrow − 3D anisotropic region growing followed by attachment surface area ratio calculation.
SYNOPSISvbgrow [if=] [fp=] [of=] [s=] [d=] [n2d=] [n3d=] [-s] [v=] [n=] [max=] [-w] [-t] [-c] [-e] [-d] [-i] [-p] [-a] [-v]
DESCRIPTIONvbgrow program does a 3D anisotropic region growing and calculates attachment surface area ratio.
The input to the program is a binary byte type image [if=]. The seed point is specified using [s=[x,y,z]] option. The program can do an isotropic ([-i]) and anisotropic region growing procedures. For aniostropic (default) region growing, the resolutions in the respective dimensions are extracted from the history header file.
For a 2D region growing, four (n2d=0) and eight (n2d=1) neighbourhood connectivity are available. Similarly, for a 3D region growing, two (n3d=0), six (n3d=1), ten (n3d=2) and twenty (n3d=3) neighbourhood connectivity are available. Two types of termination criteria are availble. The first one is using an estimate of the radius of the region (defualt option) given by [d=] option. For an attachment surface area calculation, the region can be overgrown ([n=]) iterations if the ([-e]) option is selected. The region can be overgrown only in the axial direction using the [-d] flag. The second termination option is using the volume change threshold ([-t]) specified by [v=]. For the attachment calculation, only in-plane connectivity can be selected using the [-p] flag. The output image is in a byte type format. In this image, background, grown region voxels and attachment voxels are labeled as 0,1 and 2 respectively.
OPTIONS|
[if=] |
input binary image file | ||
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[fp=] |
volume and surface area calculation info at every iteration in a text file format | ||
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[of=] |
output image file |
[s=[x,y,z]]
seed point location(x,y,z)
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[d=] |
approximate radius of region | ||
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[n2d=] |
2D neighborhood definition (0=4NBD,1=8NBD) | ||
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[n3d=] |
3D neighbourhood definition (0=2NBD,1=6NBD,2=10NBD,3=26NBD) | ||
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[v=] |
volume change threshold | ||
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[n=] |
oversegmenation number of iterations | ||
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[max=] |
maximum iteration termination criterion | ||
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-w |
script output format | ||
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-t |
apply volume change iteration criterion | ||
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-c |
assume only convex attachment | ||
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-e |
calculate surface voxels after overgrowing | ||
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-d |
overgrowing in the z direction only | ||
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-i |
region growing in an isotropic space | ||
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-p |
only consider inplane connectivity for attachment calculation | ||
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-a |
volume increments during oversegmenation | ||
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-v |
verbose mode to print information about intermediate results |
Andinet Asmamaw