This is a re-post of a tutorial I made and hosted over at pbwiki before I had a web site...traffic there is down, so I am moving it to this site. Images like these would be used in making a battlemap, for VTT (or paper) gaming.
This tutorial will tech you how to take existing objects with a transparent background and making them look like gold metal in a relatively realistic manner.
2. Load up a source image of the object. In this case, it is a cobra from the DOTW at dundjinni:
3. Duplicate the layer. Optionally desaturate the layer:
Layers Dialog showing Duplicated Layer
4. At this point you might have to adjust the layer levels to get a good bump map source, but in this case I didn't need to. It all depends on the image.
5. Load up an image to use as an environment map. I got a good one for gold from here:
6. Now launch the Filter->Render->Lighting Effects filter. You will have to adjust all the tabs. First on the environment map tab, check "Enable Environment Mapping" and select the gold image:
Lighting Effects Filter
7. On the Bump Map tab check the "Enable Bump Mapping" option, and select the Background layer. Also dial the Maximum height down. I find 0.02 and 0.01 are good for this sort of thing, but it really depends on the source image. Also play with the different curves. Here I found Spherical gave the most realistic look:
Lighting Effects - Bump Mapping
8. On the Material tab check the "Metallic" option:
Lighting Effects - Material Tab
9. Back on the Options tab select "Transparent Background". Also drag the light source (the blue dot) to somewhere near the center of the image, depending on how you want the light to hit it:
Lighting Filter - Options Tab
10. Click OK. You will have the basic golden object:
11. Move the top layer to align it with the one below, so you can just use the old shadow around it. Then save the image off as a png. Done!
I also edited out the tongue, thinking a statue wouldn't have one...
Final Result - a Golden Cobra Statue
Some things that might need adjusting - the original image levels. Remember bump maping maps from black to white as low to high, so you want raised surfaces to be lighter than dark surfaces. If the source image is not coloured this way, you might have to do some sort of remapping or gradient shifting/filling ahead of time.
As well, you can increase the intensity of the gold effect by duplicating the gold layer and changing the blending mode to Multiply. This is really the part that is more art than science...
I was so happy to have found your tutorial but I'm completely lost at step 6. There's no such thing as Filter->Render->Lighting Effects filter in my standard filters?!?! I figured as much that I might need a plugin and it would be of great help if you'd let me know what it is called and where to find it! Thanks! ( Google was of NO HELP at all!)