Kernel-class

A class representing an image kernel for image processing, such as convolution or filtering operations in brain images.

A collection of data structures and methods for handling volumetric
brain imaging data, with a focus on functional magnetic resonance imaging (fMRI). Provides efficient
representations for three-dimensional and four-dimensional neuroimaging data through sparse and dense array
implementations, memory-mapped file access for large datasets, and
spatial transformation capabilities. Implements methods for image resampling,
spatial filtering, region of interest analysis, and connected component labeling. General introduction
to fMRI analysis can be found in Poldrack et al. (2024, "Handbook of functional MRI data analysis",
<ISBN:9781108795760>).

Bradley Buchsbaum

neuroim2

Data Structures for Brain Imaging Data

Kernel-class function

<dl>
<dt><code>width</code></dt>
<dd>A <code>numeric</code> value representing the width of the kernel in voxels. The width is typically an odd number to maintain symmetry.</dd></dl>
<dt><code>weights</code></dt>
<dd>A <code>numeric</code> vector containing the weights associated with each voxel in the kernel.</dd>
<dt><code>voxels</code></dt>
<dd>A <code>matrix</code> containing the relative voxel coordinates of the kernel. Each row represents a voxel coordinate as (x, y, z).</dd>
<dt><code>coords</code></dt>
<dd>A <code>matrix</code> containing the relative real-world coordinates of the kernel, corresponding to the voxel coordinates.</dd>

Slots

Kernel — Kernel-class

<dl>
<dt><code>width</code></dt>
<dd>A <code>numeric</code> value representing the width of the kernel in voxels. The width is typically an odd number to maintain symmetry.</dd>


<dt><code>weights</code></dt>
<dd>A <code>numeric</code> vector containing the weights associated with each voxel in the kernel.</dd>


<dt><code>voxels</code></dt>
<dd>A <code>matrix</code> containing the relative voxel coordinates of the kernel. Each row represents a voxel coordinate as (x, y, z).</dd>


<dt><code>coords</code></dt>
<dd>A <code>matrix</code> containing the relative real-world coordinates of the kernel, corresponding to the voxel coordinates.</dd>


</dl>

Kernel-class: Kernel

Description

Arguments

Slots