Script Module: Create_Projections

Description:

Creates projections of the input image in parallel beam and when rotated around the z-axis.

On the left is a volume rendering of the input image, on the right is the resulting stack of projections. The top left image shows the first image of the stack, at 0° rotation, the top right at 45°, and the bottom at 90°.

Connections:

Image

[required]
The input image, of type HxUniformScalarField3.

Ports:

Width

Width and height of each projection. Each projection is oriented in the xz plane in the result.

Number

Number of projections, i.e. number of images of size width x width. The resulting stack of projections is a 3D image of size Width x Number_Projections x Width

Rotation

The projections can either span over 180° or 360°. Since this is a parallel beam geometry, projections over 180°-360° are mirror images of those over 0°-180°.

Temp_Dir

In order to stack the projections, the process appends each projection in a file, before reloading that file as a 3D image for the result. You have to indicate a directory in which Avizo is allowed to write (the temporary file is deleted once the computation is finished).

Compute

Push this button to start the computation.