Forum: Vue

Subject: HDRI test....but strange problem

gaz170170 opened this issue on Nov 10, 2004 ยท 8 posts

gaz170170 posted Wed, 10 November 2004 at 6:23 PM

Hi, I have been playing with HDRI lighting and have been having fun with the results, mostly. However, as you can see in this pic here, there appears a strange halo around the edges of the hair. Is this because of the particular transparency map or is it a problem with Vue 5?

noboundariez posted Wed, 10 November 2004 at 7:26 PM

hi there, looks really great : ) may i ask what did you do with the hair? all i can get is just blurry/distorted hair :< Would you post a sanpshot of your setting? TIA

Dale B posted Wed, 10 November 2004 at 9:06 PM

That's one of Kozaburo's hair peices, isn't it? The shaping of the feathered ends give it away. It's an issue with the setting of the transparency value; what is transparent in Poser isn't quite transparent in Vue; particularly the more realistic the lighting gets. Open the hair in the material editor and check your transparency and translucency settings, and adjust until the effect goes away.

Veritas777 posted Thu, 11 November 2004 at 2:11 PM

Since you have back lighting it appears, you may want to go into the EFFECTS panel of the Atmosphere Editor and turn OFF the "Default Lens Flares"- both check boxes. I personally wish that lens flares in Vue were OFF as the default setting, rather than ON. That's just my guess as to why you may be getting a Halo Effect...

maxxxmodelz posted Thu, 11 November 2004 at 10:58 PM

Looks like a transparency issue. Check that "Falloff Transparency" in the P5 material room is at 0. Sometimes when applying mats, it will set it to 0.6 or something, which could cause ghosting in transparent objects.

Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.

gaz170170 posted Fri, 12 November 2004 at 2:31 AM

Thanks for the suggestions guys, will try them out and post back

jwhitham posted Fri, 12 November 2004 at 3:59 PM

I've had that a number of times in Vue (4, 4 Pro and 5), with all types of atmospheres. I think the basic problem is that jpeg compression algorithms are petty badly suited to transmaps. They search first for close value pixels and average them. I've taken some jpg transmaps into a pixel editor and found no absolute black (total transparency), I suspect that Poser uses some kind of 'threshold' value.

cinacchi posted Sat, 13 November 2004 at 12:09 PM

Jwhitham, if I remember well Vue (at least Vue 4) can "read" a gray maps using 256 values only. ***Luca aka cinacchi