vol.boundary.mask

Compute, over all images in a stack along an axis, the foreground and background pixels as a binary mask. A pixel is a <code>foreground</code> pixel iff its value is greater than the <code>threshold</code> parameter in at least one of the slices. A pixel is a <code>background</code> pixel iff its value is below or euqal to the <code>threshold</code> in all slices.

internal

Provides high-level access to neuroimaging data from standard software packages like 'FreeSurfer' <http://freesurfer.net/> on the level of subjects and groups. Load morphometry data, surfaces and brain parcellations based on atlases. Mask data using labels, load data for specific atlas regions only, and visualize data and statistical results directly in 'R'.

Tim Schc3<a4>fer

fsbrain

Managing and Visualizing Brain Surface Data

Tim Schäfer

vol.boundary.mask function

<dl><dt>volume</dt>
<dd>a 3D image volume</dd>
<dt>plane</dt>
<dd>integer vector of length 2 or something that will be turned into one by <code>vol.plane.axes</code>.</dd>
<dt>threshold</dt>
<dd>numerical, the threshold intensity used to separate background and foreground. All voxels with intensity values greater than this value will be considered <code>foreground</code> voxels.</dd></dl>

Arguments

Compute foreground pixels over the whole 3D imagestack. — vol.boundary.mask

<dl>

<dt>volume</dt>
<dd>a 3D image volume</dd>


<dt>plane</dt>
<dd>integer vector of length 2 or something that will be turned into one by <code>vol.plane.axes</code>.</dd>


<dt>threshold</dt>
<dd>numerical, the threshold intensity used to separate background and foreground. All voxels with intensity values greater than this value will be considered <code>foreground</code> voxels.</dd>

</dl>

vol.boundary.mask: Compute foreground pixels over the whole 3D imagestack.

Description

Usage

Value

Arguments