HistogramVolumetrySimple¶

MLModule¶

genre	`Histogram`
author	`MeVis Medical Solutions AG`
package	`MeVisLab/Standard`
dll	`MLVolumetry`
definition	MLVolumetry.def
see also	`Histogram`
keywords	`calculate`, `interval`, `threshold`, `count`

Purpose¶

The module HistogramVolumetrySimple computes a volume from a given voxel volume, a threshold interval, and a histogram.

Usage¶

Connect a histogram to histogram. Also attach a matching input image to derive the correct voxel volume. Than select your thresholds and update.

This way of computing the volume of a threshold interval is equivalent to applying the thresholds to the image and then calculating the resulting mask volume. However, if you want to try many different threshold intervals, it’s typically more efficient to use the histogram base method since you don’t have to scan the entire (possibly large) image whenever a threshold changes, but only the (typically much smaller) histogram range.

Windows¶

Default Panel¶

../../../Modules/ML/MLVolumetry/mhelp/Images/Screenshots/HistogramVolumetrySimple._default.png

Input Fields¶

input0¶

name: input0, type: Image¶: Only used if Retrieve voxel volume from input image is checked.

histogram¶

name: histogram, type: MLBase¶: Input histogram generated by Histogram.

Parameter Fields¶

Field Index¶

`Auto`: `Bool`	`Upper Threshold`: `Double`
`Calculate`: `Trigger`	`Volume in Threshold Interval (ml)`: `Double`
`Lower Threshold`: `Double`	`Voxel Volume`: `Double`
`mean`: `Double`
`noVoxels`: `Integer`
`opStatus`: `String`
`Results up to date`: `Bool`
`Retrieve voxel volume from input image`: `Bool`

Visible Fields¶

Auto¶

name: autoCompute, type: Bool, default: TRUE¶: If checked, the module computes anew on any field or input change.

Results up to date¶

name: resultsValid, type: Bool, persistent: no¶: Shows whether the result is up-to-date.

Calculate¶

name: compute, type: Trigger¶: If pressed, the module computes anew.

Retrieve voxel volume from input image¶

name: calcVoxelVolumeFromInImg, type: Bool, default: TRUE¶

If checked, the voxel volume will be computed from the properties of the connected input image and the Voxel Volume field will be updated accordingly.

Otherwise, the value in the Voxel Volume field will be taken for the overall volume calculation.

Voxel Volume¶

name: voxelVolume, type: Double, default: 0¶: Sets a voxel volume value.

Lower Threshold¶

name: lowerThresh, type: Double, default: 0¶: Sets a lower threshold value.

Upper Threshold¶

name: upperThresh, type: Double, default: 1¶: Sets an upper threshold value.

Volume in Threshold Interval (ml)¶

name: computedVolume, type: Double, persistent: no¶: Shows the computed volume.

Hidden Fields¶

noVoxels¶

name: noVoxels, type: Integer, default: 0¶

mean¶

name: mean, type: Double, default: 0¶

opStatus¶

name: opStatus, type: String¶