Join David Mattingly for an in-depth discussion in this video Creating an alpha channel, part of Digital Matte Painting 5: Camera Projection in Maya.
…Next we're going to add flames at the top…of the lava, making it look like it's on fire.…I've got a nice piece of stock footage of fire shot against black.…So let's pull that into our After Effects file and then down into a new comp.…Let's scroll through it.…Looks good. Let's check the alpha channel.…Well that's no good there's no alpha channel.…Does that mean we can't…use it, since without the alpha channel giving it…transparency all the black around the flames will show up.…
Well, luckily, we can create an alpha channel…from this footage since it was shot against black.…Before we do that, I'm worried about this right edge of the flames.…It's coming uninterrupted out of the right side…and has a hard edge that won't look good.…Let's add…a mask around it,…and set the mask feather to 20 pixels to soften up the edge.…Now it'll blend more naturally.…To create an alpha channel, you first need to duplicate the flames.…Then let's look through the RGB channels to see which one…has the most separation between the flames and the black background.…
- What is camera projection?
- Isolating the layers in your painting
- Setting up for projection camera
- Adding geometry
- Projecting textures
- Animating the camera
- Vertex modeling
- Animating the background
- Adding flames, smoke, and glows
- Rendering your project
Skill Level Beginner
Photoshop CC 2013 Essential Trainingwith Julieanne Kost14h 58m Beginner
1. Getting Started with Camera Projection
2. Setting Up Your Maya File
3. Adding Geometry to Match Your Painting
4. Projecting Your Textures
5. Adding an Animated Camera
6. Advanced Camera Projection
7. Toning and Animating the Background
8. Adding Video and Special Effects
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