Viewer3D Help

Index

Viewer3D (Intro)

This viewer can be used to interactively view any kind of 2D, 3D and 4D image volumes like CT and MRI.
It includes:
Maximum intensity projections (MIP)

Volume Rendering (VR)

Colored Volume Rendering

Phong shaded Volume rendering.

SliceView

Distance Measurement

Volume Measurment

Active Contour Segmentation



Shear-Warp

The fast render algorithm which used is based on a c-code implementation of the Shear-Warp transform.

Instead of rotating the viewer rays the volume slices are sheared, and the rays go parallel through
the volume allowing 2D interpolation instead of 3D, and efficient caching of data

The intermediate image after rendering through the sheared slices must be warped to
get the correct final image.

Starting Viewer3D

  Just start with
    VIEWER3D
 
  Or to display one or more matlab volumes
 
    VIEWER3D(V);              VIEWER3D(V1,V2,V3 ....);
 
 
  inputs,
  V : 2D, 3D or 4D Input image, of type double, single, uint8, 
             uint16, uint32, int8, int16 or int32 
             (the render process uses only double calculations)

The Matlab render functions are also available as MEX / c-code in mex_c-code.zip

File


Window


Set the amount of separate render-windows in the Viewer3d.

Config


Help


Volume 1


Render


Volume


Select the volume(s) which you want to render. You can segment an image if the render is "slice x,y,z" and you select multiple volumes from which one is a new-empty(Segmentation volume) shown in green.

Config


Measure


Only available in slice render mode You can also drag measurement points, and lines with the left mouse button. Or remove a measurement with the right mouse button

Segment



Only available in slice render mode, and if you selected two or more volumes from which one is an editable volume (shown in green).

Mouse Control



Change Alphacolors Window



The graph is showing the histogram of the data, with on the x-axis the intensity values.
The curve shown is a mapping from intensity to alpha and color, with on the y-axis
the opacity of the voxel form zero (transparent) to one (solid)