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Getting only the result of an “Add” Transfer mode of a highlight
Say I have an image. On top of it there’s a layer with a highlight with an “Add” transfer mode.
The “Add” makes the “light” merge beautifully with the image.
I would like to use that merged highlight (without the image itself) with alpha so that it can be used on top of other images.
(basically I am trying to fake the Add transfer mode, as it is pre-calculated)
What is the best way to achieve that? -
3 Replies
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Hi Ted – either : –
1 ) if the highlight does not move take frame into PS and paint everything else out with solid black
2 ) if the highlight moves make an animating matte to remove unwanted areas
…… then put result into separate layer and mix into bg plate…
…….. and thats it !!!!! ——- chris —
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Thank you all for the replies. The reason for this is completely technical. The result of the animation has to be used on a real time application. Asking the computer to generate true real time add function would result in higher latency. I find it very challenging to find the right path to achieve this result.
It basically means I need the highlight output only where it merged with the underlying image. Don’t use the image’s highlights. -
I placed an example to what I am after.
I guess I am after something as simple as the “Difference Matte” effect, but a more subtle approach of it. Meaning not having those harsh edges, and achieveing something more like a Luma Matte.
I am attaching a short checkerboard example where the highlight that travels has an impact on the underlying layer, it actually feels like it is grabbinbg them like a space/time anomaly 🙂
I’d like to preserve the difference between the layers and reuse it.
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