Process - Rasterize

This creates an image file from a phantom. Technically, it converts the phantom from a vector (infinite resolution) object into a 2-dimension array of floating-point pixels. The parameters to set are:

X size Number of columns in image file

Y size Number of rows in image file

Samples per pixel Numbers of samples taken per pixel in both the x and y directions. For example, if the Samples per pixel is set to 3, then for every pixel in the image file 9 samples (3 x 3) are averaged.

X size	Number of columns in image file
Y size	Number of rows in image file
Samples per pixel	Numbers of samples taken per pixel in both the x and y directions. For example, if the `Samples per pixel` is set to `3`, then for every pixel in the image file 9 samples (3 x 3) are averaged.