This image has a few problems.

The neck under the teapot lid handle and the rim around the bottom of the
pot & cup are exactly wrong: these areas should be darker, as it would be
harder for a secondary electron emitted from these kinds of surfaces to make
it back to the detector.

The top rim of the teacup should be bright instead of dark.

An SEM has a detector sitting of to the side. This gives secondary electrons
emitted from surfaces facing the detector a greater chance of being detected
than those from surfaces facing the other way, almost as if there were a
light source over there.

Or so says my SEM mentor........

So perhaps a fix is either a combination of slope pigs OR a single
light_source off to the side.

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