Mousewrites
 |
Hi,
New here. This is my first filter (that other people can see, anyway  ), and I have a question.
I've got a blend going into the hight component, and, though it seems to be flat black in places, the texture is showing up as slightly bumpy/textured. I'm not sure where the noise is coming in. Any hints? Sorry about the general sloppiness of the filter; I'm still learning. scar3.ffxml |
|||||
| Posted: April 12, 2007 4:34 pm | ||||||
| ssamm |
Cool filter.
The "flat black" ares of the image (in the blend component that goes into the height map) actually isn't all that flat. Try connecting it onto a threshold component and put the threshold level down to 4. This will let you see that there are still lightness variations in those "flat black" areas. (I.e. The noise seems to still be coming from the combination of the opacity map and the background image.) It seems the surface filter is very sensitive to even the slightest change in blackness values. I hope this helps some. |
|||||
| Posted: April 12, 2007 6:14 pm | ||||||
|
Vladimir Golovin
Administrator |
Filter Forge uses double-precision floating point numbers, and the Height input is sensitive even to the smallest changes in the brightness level. So it is possible that what your monitor reproduces as black isn't actually black. |
|||||
| Posted: April 16, 2007 6:14 am | ||||||
|
Mousewrites
|
Yup, that's what it was. I ended up adding a very faint bump to the skin anyway, and it disguises the noise. My LCD monitor isn't calibrated as well as I'd like (well, duh, it's a LCD).
Now if I could only figure out how to make the noise stop clipping the very darks and very lights... |
|||||
| Posted: April 16, 2007 8:36 am | ||||||
uberzev
 |
|
|||||
| Posted: April 16, 2007 8:38 am | ||||||
Kraellin
 |
i think you can also add a 'micro blur' between your control and the results on the 'reflectivity' node. the micro blur is simply a blur that is remapped between 0 and 1. this shld smooth things out some. i did it another way too with good results but cant remember how right now. when i run across it again i'll post it up here.
If wishes were horses... there'd be a whole lot of horse crap to clean up!
Craig |
|||||
| Posted: April 16, 2007 2:27 pm | ||||||
|
Vladimir Golovin
Administrator |
Or use a Tone Cure component with the Gain curve.
I wouldn't recommend that -- try to avoid Blur unless it's absolutely necessary. |
|||||
| Posted: April 17, 2007 8:19 am | ||||||
|
Kraellin
|
yeah, i know, vlad. it done in a pinch.
the tone curve and gain sounds good. thanks  If wishes were horses... there'd be a whole lot of horse crap to clean up!
Craig |
|||||
| Posted: April 17, 2007 2:25 pm | ||||||
Join Our Community!
Filter Forge has a thriving, vibrant, knowledgeable user community. Feel free to join us and have fun!
33,711 Registered Users
+18 new in 30 days!
153,531 Posts
+36 new in 30 days!
15,347 Topics
+72 new in year!
Online Users Last minute:
20 unregistered users.
Recent Forum Posts:
- Kaleidoscopic Variations Vol. 2 by jhantares by jhantares
September 10, 2025 - Polygonal Images Set by Ramlyn by westdale
September 10, 2025 - FF Killing Resolution by SpaceRay
September 9, 2025 - Geometry Spinner by Rachel Duim by Rachel Duim
September 6, 2025 - Channel Glitch by Martin Naumann by SpaceRay
August 31, 2025 - Circuit Glitch by Martin Naumann by SpaceRay
August 31, 2025 - Groovy Rays by Ramlyn by Ramlyn
August 31, 2025 - Is Ultraforge dead? by dpankros
August 30, 2025 - Component Instances by AussieDecalf
August 27, 2025 - Hyperbolic Tiling Challenge by AussieDecalf
August 27, 2025 - Chaos Fields by SpaceRay
August 27, 2025 - New awesome TEXT component FF 14 - How to get the most of it? by SpaceRay
August 20, 2025
