Using the Probe Tools
You can view the values and coordinates of the voxel, or selected 2D or 3D neighborhood, under the mouse cursor with the tools on the Probe panel. You should note that multiple values will be displayed for views that contain multiple objects, such as image data, multi-ROIs, and scalar meshes.
Probe panel
The following Probe tools are available on the panel.
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Description |
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Point Probe… Reports the position and value(s) of the selected voxel. |
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Disk Probe… Reports the position and values of the selected circular neighborhood that is aligned with the current view. |
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Square Probe… Reports the position and values of the selected square neighborhood that is aligned with the current view. |
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Sphere Probe… Reports the position and values of the selected spherical neighborhood that is aligned with the current view. |
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Cube Probe… Reports the position and values of the selected cubic neighborhood that is aligned with the current view. |
The following measurements are available for probed points and neighborhoods.
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Position |
Indicates the X, Y, and Z positions of the selected point or the center of the selected neighborhood in the world coordinate system. NOTE When probing neighborhoods, the diameter of the selected Disk or Sphere probe or the side measurement of the selected Square or Cube probe, will also be indicated. |
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For datasets |
Value… Indicates the intensity value of the selected voxel or the value of the voxel in the center of the selected neighborhood. Voxel count*… Indicates the number of voxels in the probed neighborhood. Mean*… Indicates the mean value of the voxels in the probed neighborhood. Min*… Indicates the minimum value of the voxels in the probed neighborhood. Max*… Indicates the maximum value of the voxels in the probed neighborhood. Standard Deviation*… Indicates the standard deviation of the voxel values in the probed neighborhood. Voxel… Indicates the X, Y, and Z positions of the selected point or the center of the selected neighborhood in the image coordinate system. |
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For multi-ROIs |
Label… Indicates the label value of the selected voxel or the value of the voxel in the center of the selected neighborhood. Voxel… Indicates the X, Y, and Z positions of the selected point or the center of the selected neighborhood in the image coordinate system. Scalar values… Indicates the scalar values, such as volume, surface area, Phi and Theta angles, or class, of the selected label. |
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For meshes** |
Face index… Indicates the label value of the selected voxel or the value of the voxel in the center of the selected neighborhood. Vertex index… Indicates the X, Y, and Z positions of the selected point or the center of the selected neighborhood in the image coordinate system. Vertex scalar values… Indicates the scalar values, such as volume, surface area, Phi and Theta angles, or class, of the selected vertex index. Available for meshes with scalar values only. |
* Available for the Disk, Square, Sphere, and Cube probe tools only.
** Meshes can only be probed in 3D views.
How to Probe Values
- Add the required dataset(s) and object(s) to the current scene and adjust the view, as required.
- Open the Probe panel on the left sidebar.
- Select the required Probe tool.
- Adjust the size of the Disk, Square, Sphere, or Cube probe, as required.
- Hold-down Left Ctrl and rotate the scroll wheel of your mouse to adjust the diameter of the Disk or Sphere probe or the side of the Square or Cube probe.
- Enter the required size in the Diameter edit box.
- Click inside a 2D or 3D view to see the value(s) and coordinates of the selected voxel or neighborhood.
NOTE If you are probing an area or volume, the center of the probe must intersect with the data. In cases in which you probe values at the edge of an object, only voxels that contain data will be considered when computing the related statistics.
Configured Actions for the Probe Tools
A number of configured actions and keyboard shortcuts are available for using the Probe tools. The default settings for these actions are listed in the following table.
| Action | State | Key | Mouse |
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Increase cubic probe size (in Probe) |
Probe Cube (OrsStateProbeCube) |
Left Ctrl |
Mouse wheel up |
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Decrease cube probe size (in Probe) |
Probe Cube (OrsStateProbeCube) |
Left Ctrl |
Mouse wheel down |
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Increase disk probe size (in Probe) |
Probe Cube (OrsStateProbeDisk) |
Left Ctrl |
Mouse wheel up |
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Decrease disk probe size (in Probe) |
Probe Cube (OrsStateProbeDisk) |
Left Ctrl |
Mouse wheel down |
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Increase spherical probe size (in Probe) |
Probe Cube (OrsStateProbeSphere) |
Left Ctrl |
Mouse wheel up |
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Decrease cube spherical size (in Probe) |
Probe Cube (OrsStateProbeSphere) |
Left Ctrl |
Mouse wheel down |
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Increase square probe size (in Probe) |
Probe Cube (OrsStateProbeSquare) |
Left Ctrl |
Mouse wheel up |
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Decrease square probe size (in Probe) |
Probe Cube (OrsStateProbeSquare) |
Left Ctrl |
Mouse wheel down |
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Activate the Probe |
Probe (OrsStateProbe) |
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Left mouse |
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Activate the Probe Cube |
Probe Cube (OrsStateProbeCube) |
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Left mouse |
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Activate the Probe Disk |
Probe Cube (OrsStateProbeDisk) |
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Left mouse |
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Activate the Probe Sphere |
Probe Cube (OrsStateProbeSphere) |
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Left mouse |
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Activate the Probe Square |
Probe Cube (OrsStateProbeSquare) |
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Left mouse |
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Probe in any mode |
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O |
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Probe Cube in any mode |
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Probe Disk in any mode |
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Probe Sphere in any mode |
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Probe Square in any mode |
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Switch to Probe mode |
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P |
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Switch to Probe Cube mode |
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Switch to Probe Disk mode |
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Switch to Probe Sphere mode |
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Switch to Probe Square mode |
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