Join David Mattingly for an in-depth discussion in this video Extracting the foothills, part of Digital Matte Painting: Changing a Scene From Summer to Winter.
I am going to use a different technique to deal with these background foothills:…one on the right and one on the left.…I need to separate the foothills from the background mountain, because I'm not…going to handle the mountain the same way.…Once again, I am going to look to my alpha channels and see which one has the…most contrast between the foothills and the background mountain.…The blue channel is the best choice because it offers the most contrast.…Duplicate the blue channel and then apply a Curve to it.…
You'll want to make everything on the foreground foothills black and everything on…the background mountains white.…Pull the white point to the left till the mountains turn completely white. Then…pull the black point to the right, until the foothills turn completely black.…You won't be able to get it absolutely perfect, but it'll work fine with a little cleanup.…Now zoom in on the alpha channel and with the Lasso tool, get rid of this little…bit of bleed-through from the background mountains.…
- Making precise selections using the Color Range command
- Controlling reference material through layer masks
- Creating custom brushes
- Painting snow, icicles, and trees
- Painting through a high-contrast matte
- Replacing the sky in an image
- Animating smoke and falling snow
- Reformatting and rendering a scene in After Effects
Skill Level Intermediate
Photoshop CS6 Essential Trainingwith Julieanne Kost10h 30m Beginner
After Effects CS6 Essential Trainingwith Ian Robinson8h 41m Beginner
1. Revising the Plate
2. Painting Over the Plate
3. Replacing the Sky
Extracting clouds5m 15s
4. Creating a Dusk Version of the Scene
5. Animating Your Scene in After Effects
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