Re: SEM 3d/toe in

[T3D John Bercovitz <bercov@xxxxxxxxxxx>]

ted g writes:

> As a practical matter, i agree with George that stage tilt is the standard
> method of creating 3d SEM pairs.  

Yup, that's what all our machines here do.

> A quick review of Ferwerda didn't reveal much specifically discussing
> microscopy/SEM except a mention of the extreme depth of field of SEM 

That's part of what George was alluding to, I think.

> So when one refers to the shots being like those done at infinity, are you
> referring to the window, or the geometric description of the ray path from
> the specimen to the virtual observer, or to the perspective created?

I'm referring to the geometric description of the ray path which then gives
us the perspective from infinity.

> As a practical matter, i think the degree of translation possible in small
> (micro range) SEM specimens is too limiting for the depiction of depth, and
> specimen tilt is necessary.

Fer sure.

> Can anyone provide citations for actual discussions of stereo SEM?  

George has written a paper - he's sending it to me.

John B


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