I'm trying to make some effect to look like the predator thermal vision but this is the best i could do.I know is very bad, i need some advice on how to improve this image.

If you have photoshop try the " solarize" filter Mocap

You might also try adding a little transparency to get that effect.

Here is what I tried, (I was curious myself)...There is probably away of doing it all in Bryce, but I haven't quite worked it out yet... 1. I made my scene and textured it all with a basic altitude/gradient type texture, with ambience and diffusion both set to 100, I textured the things that would be cold with light, bright colours, and the semi-cool objects with medium colours, the "hot" stuff with dark colours (this is for post inversion). I renderered the scene. 2. then I opened the image in Corel Photopaint (or whatever image editor you use, Photoshop, Paintshop Pro, ect) I applied a gradient blur, set to about 1 or 2, then inverted the image (invert or negative, whatever your app calls it). 3. Then I edited the image's tone curve (pulled the little tone curve spline line around until it looked like a smooth "M"), to get a solarization effect. I dont know if this is what you where after, let me know if you need to know anything about this method. Hope it helps.

thanks for the help.I'll try to make something better now!!!