UpdateBot: Nightly -> 4.5

2015-11-12T22:05:16Z

Nightly -> 4.5

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== How to grab full slice image (+-volume, +-model) ? ==

=== A Few General Approaches ===

There are multiple ways to access image data from one or all of the slice views.

==== VTK Window to Image Function (vtk.vtkWindowToImageFilter() ====

: # Example to grab image from red slice view and output as TIF

: lm = slicer.app.layoutManager()
: redWidget = lm.sliceWidget('Red')
: redView = redWidget.sliceView()
: wti = vtk.vtkWindowToImageFilter()
: wti.SetInput(redView.renderWindow())
: wti.Update()
: w = vtk.vtkTIFFWriter()
: w.SetInputConnection(wti.GetOutputPort())
: w.SetFileName('tmp/test.tif')
: w.Write()

==== Direct access to widget data using ====

: # Example grabs image from red slice view and outputs as PNG

: lm = slicer.app.layoutManager()
: redWidget = lm.sliceWidget('Red')
: im = redWidget.imageData()
: w = vtk.vtkPNGWriter()
: w.SetInput(im)
: w.SetFileName('tmp/test.png')
: w.Write()

==== QImages using the qt.QPixmap.grabWidget function ====

: # example to grab all views and store in 'image'
image = qt.QPixmap.grabWidget(slicer.util.mainWindow()).toImage()

: # example to grab 3d view, store in tdv, then output as a png image file
tdv = lm.threeDWidget(0).threeDView()
qt.QPixmap().grabWidget(tdv).toImage().save('/tmp/test.png')

=== Notes ===

This is also useful for slicing up whatever is shown (eg. voxelizing model data) by iterating this over the dimensions of the volume/model

In order to view models in the slice view make sure to activate the "Slice Intersections Visible" property of the model

=== Specific Example ===

The following script iterates through the red slice view and outputs each slice as a .png image.
It was originally designed to output volume+model data together slice-by-slice

: https://gist.github.com/gortscizz/5060517

Documentation/4.5/FAQ/Scripting - Revision history

UpdateBot: Nightly -> 4.5