Voxels22Blobs

convert_voxels22blobs

Purpose

This program allows you to go from a blob volume to a voxel one and viceversa. The blob to voxel volume is a direct problem solved at once. However, the voxel to blob is an inverse problem to which an iterative process is applied. It has got two iteration parameters: lambda which controls the convergence speed and the final error which controls the accuracy achieved on the conversion.

Usage

I. voxels --> blobs

$ convert_voxels22blobs ...

Parameters

• `` Input voxel

• `` Output blob volumes

• -g [relative size1.41] = Distance between two grid samples in voxels

• __OR__ Select a different grid type, by default it's BCC

• -l [lambda0.05] = Relaxation parameter (between -2 and 2)

• -final_error [error0.01] = If the correction between two iterations is smaller than this value (in percentage) then the process is stopped

• -r [blob radius2] = Blob radius

• -m [blob order2] = Blob derivative order

• -a [blob alpha10.4] = It controls the blob smoothness

II. blobs-->voxels

$ convert_voxels22blobs ...

Parameters

• `` Input blob
• `` Output voxel volumes
• -r [blob radius2] = Blob radius
• -m [blob order2] = Blob derivative order
• -a [blob alpha10.4] = It controls the blob smoothness

Examples and notes

A command sequence to test could be

$ phantom_create -i phantom.descr -o phantom.vol
$ convet_voxels22blobs -voxels phantom.vol -o phantom.blob
$ convert_voxels22blobs -blobs  phantom.blob -o phantom2.vol

After applying this sequencephantom.vol andphantom2.vol should look like identical.

--Main.AlfredoSolano - 23 Jan 2007