PM 2Ring nous apporta ses lumieres en ce 2005-07-12 09:18:
> Here's what Australian dollar coins look like, almost. :) I just started
> this one last weekend. The coin faces are height fields, the milled edges
> are
> just normals on a cylinder, using a simple slope map & normal map.
> 
> I'm not happy with the finish. I may need to find better source images for
> my
> height fields to improve the surface, so it reflects like a coin should.
> Some dirt and scratch marks on them would help, too, I guess. Also, the
> heights are wrong, because highlights are not always on the high points.
> For example, see the very heavy looking jawline on the Queen. (Sorry, about
> that Liz. :)
> 
> The face image originals I used are here:
> http://www.australianstamp.com/Coin-web/aust/dollar/dolleli2.htm
> but I've smoothed them a bit (maybe a bit too much) using the NetPBM
> package.
> 
> Suggestions and constructive criticism welcome!
> 
> 
> ------------------------------------------------------------------------
> 
In the images you used, the light comes from below. This tend to reverse the aparent
relief. For the 
queen head, try the unlabled one from 1998 (1998 <blank><blank> canbera) or the 1997
silver one.
The one from 1990 silver kangaroo also have "conventiona" lighting.

Alain

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