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AE – Applying a glow effect to specific area/colors
Hey gang. I’m doing some stop motion animation and the figure I’m working with has some transparent green parts. I thought it would be cool to have just those part glow as if they were lit up.
The problem is that the entire figure is either purple, green, or orange. And there are both transparent and non-transparent green parts. So I would only want it applied to the top portion.
How can I accomplish this? (I’m still new to AE, so when I messed with the default glow effect, it was a bit confusing)
Is this possible within after effects without plug-ins? If not, what and where do I need to get them?Oh, and here’s a pic of the figure I’m using. This was photoshoped, so the parts seem to already be glowing.
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2 Replies
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Hi, was thinking you could perhaps try duplicating your final image/animation layer and applying a “Linear Colour Key” (under effects) to it so it only glows a certain colours, use the eyedropper to select the green you want to key out, set it to “use chroma”, takes a bit of playing around to get what you want, then also “blur” the layer a bit too so you dont get ugly edges! Then create an adjustment layer in-between your Keyed layer and your final image/animation layer and apply a glow to it. Set the adjustment layer to “Tack Matte – alpha inverted” (you’ll find it under the layer menu at the top). The top “colour keyed” layer will also turn its visiblity to “off” automatically which is good because you just want the adjustment layer to use it basically as an alpha channel, here’s how the order of your layers might look…..
1) ROBOT ANIMATION LAYER – Effect “Linear Colour Key” – Eyedrop Green to key out”, add Fast blur too?
2) ADJUSTMENT LAYER – Glow. Set “Track matte” to Alpha Invert
3) ROBOT ANIMATION LAYER – Leave as isCheers
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Thanks guys! I’ll give these a try once I have all my footage.
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