Kevin Finnegan
Forum Replies Created
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The levels will allow you to change the intensity of the effect by raising or lowering the output white black while leaving the center at 50% grey. You still have to edit the high frequency layer to get rid of wrinkles etc. I used it to remove shadows from a shirt. You still have to track the features you want to change so it can be a lot of roto work. If you just apply the effects as listed above, you should get almost no change in the original image, just the layers are separated so you can apply effects separately. Use this in conjunction with a tutorial on frequency separation aimed at photoshop users to see how touchup is done once the frequencies have been separated.
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I hope you’ve already figured this out but on your null’s position, the pasting of path info from the clipboard creates a bunch of “roving through time” keyframes and two regular keyframes (start and end). Just position the starting and ending keyframes on the same frames as your trim paths starting and ending keyframes. This should match up the motions perfectly assuming you only two keyframes for trim. Then you can choose auto orient along path for your null for more rotational motion too! If anyone reads this, This only works if you have one path. I’m trying to extend this functionality to shape layers with multiple paths using trim-individual paths. Any ideas?
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I figured it out mostly. I think this technique has promise in certain applications. I forgot to pre-comp my blurred layer so the detail layer was subtracting a perfect copy instead of the blurred version. I used two layers:
High frequency layer: compound arithmetic – blurred layer as 2nd source – subtract mode – wrap overflow
CC Color offset with all values at 180 – overflow wrap
Levels effect to control white and black levels (leaving grey right in the middle)
set to linear light blend mode
low frequency layer(precomped): gaussian blur -
Dan, thanks for the quick reply. Most of what I know about expressions is from your site! It’s frustrating to know that the “data is out there” as the stroke effect is clearly using the path data but alas! I can see your method working well in a script form where the script sets up the nulls with the position motion paths and then a controller for cycling through them. I’ll look into it some more and post what I come up with in this thread.