Laying image over 3-D surface

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ohmstead
ohmstead 2018-3-21
评论： Walter Roberson 2018-3-22

I have a 3-D on which surface I'd like to lay an image "on top." The specific surface I have is created from the variable new, which is a 960 x 1280 matrix:

ax = mesh(new);
ax.XLim = [0 1280]; 
ax.YLim = [0 960]; 
box on
view(-37.5,-30);

This plot is viewed from an elevation of -30 degrees. I want to overlay a 2-D image so that when the image is viewed in regular 2-D Cartesian space, its warp gives the effect that the image is "falling in" to the sharp minimum on the surface. What's the best way to do this? Thank you!

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回答（1 个）

Walter Roberson
Walter Roberson 2018-3-21
  6 个评论
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ohmstead
ohmstead 2018-3-22
Thanks for the tip! Changed the variable name.
No luck with pcolor.
Walter Roberson
Walter Roberson 2018-3-22
Could you post your complete code (in particular how you create new) so I can do some testing? I know what the basic problem is, but I need some test data to try out ideas.
The basic problem is that you are using rectangular pixels in a uniform rectangular grid, and the default lighting model is that the brightness and color of a pixel does not depend upon the depth from the viewer. You either need to move to using X Y that are not uniform rectangular, or else to make changes so that the brightness chances according to depth.

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