``diff. of Gaussians'' -- difference of Gaussians

purpose:

Locate edges in a grayscale volume using the difference of Gaussians operator (an excellent approximation to the Laplacian of Gaussians operator) [20].

MORE CHECKING NEEDED HERE!

input:

An 8-bit volume.

output:

An 8-bit volume.

parameters:

Default parameters menu is

Detector width = 0
connectivity = 6
min dog value = 0
input from vol # = 0
copy output to vol # = 0

comments:

 

1. It does not provide very meaningful results unless you use an operator having a detector width of at least 9 voxels (a number like 13 or so is preferable).
2. It does not provide very meaningful results for small objects; e.g., objects that are <30 or so voxels in diameter.
3. This is a fairly slow operation.