The Dark Elf
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- Joined
- Oct 5, 2003
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Here you go (atleast I know I can get camtasia working right now 
)
It's simple to do, but it shows why high res images that are NOT jpeg is important. I used a low res image as a test, and you can see it doesn't work well cause of the artifacts. So high res and uncompressed is important. Twice the res your working at is the best, or it'll end up looking nasty or require too much work to fix.
The better the image the easier things are for you. Select the color range, and lower the fuzziness, then select the various shades of green/blue/red whatever. The better its lit, the less shades there should be.
Incase the fuzziness just a little to make sure you've got all of the particular shade, then create an alpha channel, and fill the selection the color range gave you. Then fill in the rest by hand.
The reason I do them backwards is I can see mistakes easier with white on black, its personal preference. That and different apps have a habit of using different versions, some white on black, some black on white. So I tend not to worry about that and just invert it later if I need to.
Then I just took it into combustion, put it over that other image I did, color correction, added some grain, positioned it. Done.
You don't need a solid color around everything, just the important parts, especially if its moving video cause you shouldn't hand paint parts of the matte in that are next to the moving objects, so the background is more important when it comes to moving images.
You'll need the techsmith codec to play it
http://www.techsmith.com/products/studio/codecdownload.asp
video is here (2.9mb)
http://www.phantomworks.co.uk/tde/art/tutorials/video/alpha-photoshop/alphatut.avi
Let me know if it works right or not.
)It's simple to do, but it shows why high res images that are NOT jpeg is important. I used a low res image as a test, and you can see it doesn't work well cause of the artifacts. So high res and uncompressed is important. Twice the res your working at is the best, or it'll end up looking nasty or require too much work to fix.
The better the image the easier things are for you. Select the color range, and lower the fuzziness, then select the various shades of green/blue/red whatever. The better its lit, the less shades there should be.
Incase the fuzziness just a little to make sure you've got all of the particular shade, then create an alpha channel, and fill the selection the color range gave you. Then fill in the rest by hand.
The reason I do them backwards is I can see mistakes easier with white on black, its personal preference. That and different apps have a habit of using different versions, some white on black, some black on white. So I tend not to worry about that and just invert it later if I need to.
Then I just took it into combustion, put it over that other image I did, color correction, added some grain, positioned it. Done.
You don't need a solid color around everything, just the important parts, especially if its moving video cause you shouldn't hand paint parts of the matte in that are next to the moving objects, so the background is more important when it comes to moving images.
You'll need the techsmith codec to play it
http://www.techsmith.com/products/studio/codecdownload.asp
video is here (2.9mb)
http://www.phantomworks.co.uk/tde/art/tutorials/video/alpha-photoshop/alphatut.avi
Let me know if it works right or not.
