GreenEyedGirl opened this issue on Mar 11, 2010 · 113 posts
LaurieA posted Tue, 16 March 2010 at 9:51 AM
Quote - > Quote - Nice start, but the black line is not the only problem.
Hope you don't mind some tips.
Please click my render to see it full size and observe the things I'm talking about.
I intentially lit the figure from the side here to make the problems worse.
- Don't draw nostril shadows. First of all, yours don't line up with the nostrils. Second, observe that with proper lighting, they are naturally dark in the right place, despite the fact that your texture is actually normal skin in the nostrils. Nostril shadowing is a lighting phenomenon. It is not a change in the skin color. Your texture should represent the color of the surface assuming everything is evenly lit. Let the renderer supply the lighting and shadowing. ** Sorry what? Are you saying that the nostrils should be the same colour as the head?**
Yep, that is what he's saying ;o).- > Quote - Your eyelid edges don't line up with the figure. As a result, the texture eyelid edges are showing up on the upper eyelid, and the makeup is out of line. Always test render with the eyes closed. I havent really tested it eyes open or close i was more focussed on the seams ect
It's always a good idea to try and get rid of any specular points or areas on your photos when making a texture map for skin or any other kind of texture that will be used in a 3D program since the lighting and materials in the 3D program normally create those. Does that make sense? :o). He's just saying if you eliminate the shine on the lips on the texture map, it will look better and more natural once you bring it into Poser or whatever program you will be using it in :o).- > Quote - Make a bump map to go with the color map, but do NOT make it from the color map. If you do that, you're going to create bumps in spots where the skin happened to have color variations or even burned in highlights that won't match when the light is moved to the side. If you can't produce a good bump map, then don't. I used a Turbulence node for bump here. A hand-made bump map is better than a turbulence node. A bump map made from the color map is worse than useless. It will detract from the realism. I am sorry I dont know what you mean by not to make if from the colour map? Are you saying to create a new black and white version the way I created this one? Im a novice remember :)
A bump map made from a color map isn't ideal because of different things like specularity of skin and camera flash, angle of the shot, etc. If you make a bump map from a grayscale color map, it actually looks in some places like your bump is going outward rather than inward when it's rendered. Take leather for instance. If you photograph leather, the white area's around the skin's creases are where the leather is picking up the light reflection. 9 times out of 10 it's around the edges of the bumps and not the deepest part of them nor the highest part of them: the peak and valley of the bump so to speak. So if this is used for the bump, it looks "off" because it's the valley that you want to be the deepest part and the very tops that you want to be the highest part. What I just described would make the edges around the bumps the highest part, leaving a "dimple" where the bump should be the highest. I hope that makes sense :o).