9.124. Resample Data (Image Geometry)
Group (Subgroup)
Sampling (Resample)
Description
This Filter changes the Cell spacing/resolution based on inputs from the user. There are several resampling modes:
WARNING: NeighborList Removal
If the option to “Renumber Features” is turn ON and the Cell Feature AttributeMatrix contains any NeighborList data arrays, those arrays will be REMOVED because those lists are now invalid. Re-run the Find Neighbors filter to re-create the lists.
Spacing
The values entered are the desired new spacings (not multiples of the current resolution). The number of Cells in the volume will change when the spacing values are changed and thus the user should be cautious of generating “too many” Cells by entering very small values (i.e., very high resolution).
Example 1:
Image Geometry with cell dimensions (524, 390, 164) and spacing (1, 1, 1).
If the new spacing value is (2, 2, 2), then the geometry will have cell dimensions (262, 195, 82) and spacing (2, 2, 2).
Example 2:
Image Geometry with cell dimensions (524, 390, 164) and spacing (1, 1, 1).
If the new spacing value is (0.25, 0.7, 2.3), then the geometry will have cell dimensions (2096, 557, 71) and spacing (0.25, 0.7, 2.3).
Scale Factor
The values entered are the desired scaling factor for each dimension, in percentages.
Example 1:
Image Geometry with cell dimensions (524, 390, 164) and spacing (1, 1, 1).
If the new scaling value is (30%, 30%, 30%), then the geometry will have cell dimensions (157, 117, 49) and spacing (3.3333, 3.3333, 3.3333).
Example 2:
Image Geometry with cell dimensions (524, 390, 164) and spacing (1, 1, 1).
If the new scaling value is (120.4%, 50.74%, 68.12%), then the geometry will have cell dimensions (630, 197, 111) and spacing (0.830565, 1.97083, 1.468).
Exact Dimensions
The values entered are the desired cell dimensions of the resampled geometry. (100, 100, 100) would resample the geometry so that there are 100 cells in each dimension.
Example 1:
Image Geometry with cell dimensions (524, 390, 164) and spacing (1, 1, 1).
If the new exact dimensions are (100, 100, 100), then the geometry will have cell dimensions (100, 100, 100) and spacing (5.24, 3.9, 1.64).
Example 2:
Image Geometry with cell dimensions (524, 390, 164) and spacing (1, 1, 1).
If the new exact dimensions are (100, 500, 20), then the geometry will have cell dimensions (100, 500, 20) and spacing (5.24, 0.78, 8.2).
A new grid of Cells is created and “overlaid” on the existing grid of Cells. There is currently no interpolation performed, rather the attributes of the old Cell that is closest to each new Cell’s is assigned to that new Cell.
Note: Present Features may disappear when down-sampling to coarse resolutions. If Renumber Features is checked, the Filter will check if this is the case and resize the corresponding Feature Attribute Matrix to comply with any changes. Additionally, the Filter will renumber Features such that they remain contiguous.
Note: This filter does NOT change the overall bounds of the volume, just the spacing and number of cells in the volume. To change the overall bounds of the volume, apply a scaling transformation with the Apply Transformation To Geometry filter.
Input Parameter(s)
Parameter Name |
Parameter Type |
Parameter Notes |
Description |
|---|---|---|---|
Resampling Mode |
Choices |
Mode can be [0] Spacing, [1] Scaling as Percent, [2] Exact Dimensions as voxels |
|
New Spacing |
Vector of Float32 Values |
Order=X,Y,Z |
The new spacing values (dx, dy, dz). Larger spacing will cause less voxels, smaller spacing will cause more voxels. |
Scale Factor (percentages) |
Vector of Float32 Values |
Order=X%,Y%,Z% |
The scale factor values (dx, dy, dz) to resample the geometry, in percentages. Larger percentages will cause more voxels, smaller percentages will cause less voxels. A percentage of 100 in any dimension will not resample the geometry in that dimension. Percentages must be larger than 0. |
Exact Dimensions (pixels) |
Vector of UInt64 Values |
Order=X,Y,Z |
The exact dimension size values (dx, dy, dz) to resample the geometry, in pixels. |
Perform In Place |
Bool |
Removes the original Image Geometry after filter is completed |
Input Image Geometry
Parameter Name |
Parameter Type |
Parameter Notes |
Description |
|---|---|---|---|
Selected Image Geometry |
Geometry Selection |
Image |
The target geometry to resample |
Optional Renumber Features
Parameter Name |
Parameter Type |
Parameter Notes |
Description |
|---|---|---|---|
Renumber Features |
Bool |
Specifies if the feature IDs should be renumbered |
|
Cell Feature Ids |
Array Selection |
Allowed Types: int32 Comp. Shape: 1 |
Specifies to which feature each cell belongs. |
Feature Attribute Matrix |
AttributeMatrixSelection |
DataPath to the feature Attribute Matrix |
Output Image Geometry
Parameter Name |
Parameter Type |
Parameter Notes |
Description |
|---|---|---|---|
Created Image Geometry |
DataGroupCreation |
The location of the resampled geometry |
Example Pipelines
SimplnxCore/ResamplePorosityImage
License & Copyright
Please see the description file distributed with this Plugin
DREAM3D-NX Help
If you need help, need to file a bug report or want to request a new feature, please head over to the DREAM3DNX-Issues GitHub site where the community of DREAM3D-NX users can help answer your questions.