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2DView

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Eric Kerfoot edited this page Nov 6, 2017 · 5 revisions

The basic 2D view is for viewing image data in a flat (isometric) projection with secondary images or mesh data over top. A 2D tab is created through the Visualizer's menu by selecting Create -> 2D View.

Within the window, a Source image series must be selected for the view to function, this can be either an image stack or an image volume, either static or time-dependent. If the image is time-dependent, the same timestep as shown in the 3D view will be shown in the 2D.

Secondary images or meshes can be rendered with the source, these are selected through the Select Secondary Sources drop-down list. Images are rendered over top of the source but may occlude it entirely if they are totally opaque. Meshes are rendered as isoline slices through the geometry where the mesh in 3D intersects the currently viewed image.

The choice of image stack or image volume as the source affects the view's behaviour:

  • ''Image Stack'': The image displayed will be one of the selected image planes from the stack. The Slice slider selects which one. All secondary images/meshes will be viewed through the plane in 3D space defined by this selection. If an image stack is selected as a secondary whose image planes do not align with source's image planes, nothing will additional will appear in the 2D view; it is therefore best to view volume images as secondaries.

  • ''Image Volume'': The image displayed will be the sliced plane through the volume as defined by the Plane combo box selection. This plane can be one of the fixed axis-aligned planes defined relative to the image volume, or by an existing slice plane object. If a fixed plane is selected, the Slice slider moves the viewing plane through the volume in the direction of that plane's normal. All secondary images/meshes will be viewed through this selected plane in 3D space. If an image stack is selected as a secondary the currently viewing plane must align perfectly with one the stack's planes otherwise nothing additional will be visible.

The images in the 2D view use the same material properties as those in the 3D, so changing their spectra or properties such as filtering will have the same effect in both views. The render order is intended to allow secondary images/meshes to be draw over the source image, however the ordering between secondaries is not defined so adjusting transparency may be necessary to compose these correctly.

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