How to pronounce “outer boundary” in English

But what I'm trying to say is that you cannot rid economics of politics.But economic forces only give you the outer boundary.

And I won't go through all the mathematics, but if we measure the lightness along the outer boundary, we can then infer what direction of illuminationbest explains the pattern of lightness along the outer boundary.Here are the equations.

And we can actually measure or determine the normal vector at each point along the occluding contour.And I won't go through all the mathematics, but if we measure the lightness along the outer boundary, we can then infer what direction of illuminationbest explains the pattern of lightness along the outer boundary.

Now, for the model-dependent methods.I took a high-resolution photograph of the pearl in that painting and, hence, could get the mathematical form of the outer boundary, the occludingcontour. And we confidently assume that the pearl is cylindrically symmetric, and we can make a computer graphics model of it.