Surface viewer: Difference between revisions
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The Surface Viewer interface is available from the toolbar when viewing three-dimensional image data. It allows investigation of a univariate (single variable, i.e. "gray scale") 3D image viewing the result as both slices through the 3D volume and as a 3D surface taken at a specific gray-scale threshold level. | The Surface Viewer interface is available from the toolbar when viewing three-dimensional image data. It allows investigation of a univariate (single variable, i.e. "gray scale") 3D image viewing the result as both slices through the 3D volume and as a 3D surface taken at a specific gray-scale threshold level. | ||
[[Image:SurfaceViewer.png|||]] | [[Image:SurfaceViewer.png|||]] | ||
The interface consists of two plots and an interactive colorbar threshold control. In the left-most plot, the entire 3D space is displayed as a surface where any point in space is "solid" if the corresponding value is at or above a given threshold. Points which are below the threshold are transparent "voids". The colorbar threshold control on the far right indicates the threshold value being used to render the surface. Clicking on the colorbar changes the threshold value. | The interface consists of two plots and an interactive colorbar threshold control. In the left-most plot, the entire 3D space is displayed as a surface where any point in space is "solid" if the corresponding value is at or above a given threshold. Points which are below the threshold are transparent "voids". The colorbar threshold control on the far right indicates the threshold value being used to render the surface. Clicking on the colorbar changes the threshold value. | ||
The plot between the 3D surface plot and the colorbar is a 2D "slice" through the 3D space. It displays the corresponding gray-scale values in a false-color map (with color / value correspondence as shown in the colorbar). The 3D location from which the slice was taken is shown as a semi-transparent gray plane in the 3D surface plot. | The plot between the 3D surface plot and the colorbar is a 2D "slice" through the 3D space. It displays the corresponding gray-scale values in a false-color map (with color / value correspondence as shown in the colorbar). The 3D location from which the slice was taken is shown as a semi-transparent gray plane in the 3D surface plot. | ||
===Interactivity=== | |||
:* Clicking on any point in the 3D surface plot moves the 2D slice location to that point. | :* Clicking on any point in the 3D surface plot moves the 2D slice location to that point. | ||
:* Clicking on the "Slicing mode" toolbar button rotates the slice direction between the three spatial directions. | :* Clicking on the "Slicing mode" toolbar button rotates the slice direction between the three spatial directions. | ||
:* Clicking on any point in the 2D slice plot changes the 3D surface threshold to the value at the point clicked. | :* Clicking on any point in the 2D slice plot changes the 3D surface threshold to the value at the point clicked. | ||
:* Clicking on the colorbar changes the 3D surface threshold to the value clicked. | :* Clicking on the colorbar changes the 3D surface threshold to the value clicked. | ||
Revision as of 13:27, 29 May 2012
The Surface Viewer interface is available from the toolbar when viewing three-dimensional image data. It allows investigation of a univariate (single variable, i.e. "gray scale") 3D image viewing the result as both slices through the 3D volume and as a 3D surface taken at a specific gray-scale threshold level.
The interface consists of two plots and an interactive colorbar threshold control. In the left-most plot, the entire 3D space is displayed as a surface where any point in space is "solid" if the corresponding value is at or above a given threshold. Points which are below the threshold are transparent "voids". The colorbar threshold control on the far right indicates the threshold value being used to render the surface. Clicking on the colorbar changes the threshold value.
The plot between the 3D surface plot and the colorbar is a 2D "slice" through the 3D space. It displays the corresponding gray-scale values in a false-color map (with color / value correspondence as shown in the colorbar). The 3D location from which the slice was taken is shown as a semi-transparent gray plane in the 3D surface plot.
Interactivity
- Clicking on any point in the 3D surface plot moves the 2D slice location to that point.
- Clicking on the "Slicing mode" toolbar button rotates the slice direction between the three spatial directions.
- Clicking on any point in the 2D slice plot changes the 3D surface threshold to the value at the point clicked.
- Clicking on the colorbar changes the 3D surface threshold to the value clicked.