[ITK] [ITK-users] Creating 3D dome using ITK

[Francois Budin]

Hello Sidharta,


See answers inline below:

On Wed, May 10, 2017 at 11:10 AM, sidharta <sidharta.gupta93 at gmail.com>
wrote:

> Dear Froncois
>
> Thank you for your reply. The reason why I need this dome is because it
> mimics a burr (drill bit). So, I extract densities in a cubic volume and
> then mask this cube with the dome, which essentially would give me an image
> which shows what densities will the burr encounter while drilling. The
> ellipse object seems to be the key here but I don't know how to transform.
> The rotation would be identity but the translation is the key. So following
> is a pseudo code with I came up with, correct me if I am wrong:
>
> 1. Make an ellipse object of radius = 2 * edge length of the cube.
>
Don't you mean that the ellipse radius is 1/2 of the edge length of the
cube?


> 2. With SpatialObjectToImageFilter, set size of the image as the edge
> length
> of the cube (in all dimensions). Then transform the object (ellipse) so
> that
> the center of the ellipse lies at the origin of the image. This is what I
> am
> not able to figure how to achieve.
>

You probably don't want the center of the image to lie at the origin, but
in the center of your edge if I understand correctly, at least for 2 of
your 3 dimensions, and at the origin for the 3rd dimension to obtain a
half-dome.


> Kindly let me know what you think
>
> Regards,
> Sidharta
>
>
>
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