The rview display is based around a single point within the reference image volume. This is indicated by the central cursor in each plane:
Clicking with the LEFT mouse button
in any slice view moves this display focus to the 3D location of the selected
point in the selected display plane, and all slices become centered around
this point. So, as with a web browser:
Clicking on the current image display selects
a pixel on the computer display: This is translated, given the current
zoom, to a location in mm in the display volume. This location may lie
part way through a slice/voxel in the volume image data. Because rview
uses interpolation slices at intermediate locations
can be approximated in the display. However it may be useful, for example
when manually segmentaing voxels, to force the slected point to the middle
of the nearest image slice/voxel. This can be done by selecting:
To switch back to allow reslicing at any
selected screen location choose:
Keyboard Control of Reslicing
The keyboard may also be used to move around the image display, either in terms of mm locations or reference image voxels
Display Zoom and
Display Scaling
The scaling (zoom) of the displayed slices around the current reslicing point can be modified using the Zoom Options:
This allows zooming in or out around the
current reslice point:
Alternatively, the displayed may be zoomed in or out using the 'INSERT' and 'DELETE' keys on the keyboard.
Calibrated Display
The default starting display in rview shows three sets (top-to-bottom) of three orthogonal (left-to-right) planes. The axes are marked with a clalibrated scale of blue ticks:
