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Re: Removing foreground rain.

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Andrew CholertonRe: Removing foreground rain.
by on Feb 2, 2010 at 8:14:58 pm

I have a quick close up shot over the shoulder of two people talking. It was filmed on a rainy day on the street, but the set was covered up and lit like a sunny day. The Shot looks great except in the middle of an important line you see some water buildup fall between the actor and the camera. The camera is wild and shakey with changing angles.

It basically looks like a ray of a lighter color, shoots down the middle of the screen. I have tried painting, cloning in photoshop, masking, and tracking sections in after effects, but im having trouble matching colors or lense distoration, depending on the frame. Any suggestions from the creative cow forums?


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Steve RobertsRe: Removing foreground rain.
by on Feb 2, 2010 at 8:52:52 pm

Got a screencap?



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Andrew CholertonRe: Removing foreground rain.
by on Feb 2, 2010 at 10:15:38 pm

For Legal Reasons, I can't put a full frame up. but i made up a little example that shows two frames. On the Left you can see a thick piece of rain, and on the right you can see a light drop.
<img src="http://www.iepfilms.com/cow/rain.jpg">


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Todd KoprivaRe: Removing foreground rain.
by on Feb 2, 2010 at 10:20:21 pm

In some cases, rain can look and behave a lot like noise and grain, so effects for removing noise and grain can help to remove rain from the foreground. No promises, but it can be worth a shot.

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Kevin CampRe: Removing foreground rain.
by on Feb 2, 2010 at 10:52:07 pm

without seeing the shot, it's hard to say if this would work... but i have removed scratches and other marks from glass (and seams from chroma screens) with the simple wire removal effect.

it may work if the water streak isn't too wide.

Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW


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Andrew CholertonRe: Removing foreground rain.
by on Feb 2, 2010 at 11:25:17 pm

Thanks for the advice, it is giving me different things to try, and im still fairly new to after effects. i tried this, but their are so many objects and are so large and move thru frame so quickly it can't get rid of them without making an obvious mark where i removed it from.


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Antony BuonomoRe: Removing foreground rain.
by on Feb 3, 2010 at 3:26:01 pm

Just off the top of my head; maybe try duplicating the layer, masking out everything bar the droplets, then offsetting the duplicated layer in time by one frame, then touching up with Levels.

A



Vertigo Productions

http://www.vertigo.co.uk


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Andrew CholertonRe: Removing foreground rain.
by on Feb 2, 2010 at 11:19:32 pm

Thanks for the suggestion, I tried the Noise grain removal, but the water droplets are so large that they can't be removed with out over blurring the entire image. The droplets are basically a large white eclipse shape that moves thru frame with varying opacities. There a good 30 pixels thick at least.


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Michael SzalapskiRe: Removing foreground rain.
by on Feb 3, 2010 at 6:40:40 am

Any chance of a reshoot?
Any way you can add more of that stuff to the rest of the scene as if it's some sort of stylistic element?
Otherwise...all I can think of is frame by frame in Photoshop by someone who's good at it.

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.


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Joey ForemanRe: Removing foreground rain.
by on Feb 3, 2010 at 6:48:16 am

Looks like a lot of rotowork involving masking a Levels adjustment layer. It seems like the streaks are just creating areas of increased brightness that need to have their levels adjusted to match the non-affected surrounding area. I'd recommend trying an overall midtone adjustment 1st, and if you can't get a match go channel by channel. The levels settings may need to be animated as well. You'll most likely need several masks, appropriately feathered to blend.
Maybe someone else here can think of a way to "harvest" the streaked areas by means of a high-contrast matte, to obviate or at least minimize the need for rotoscoping. That's probably a long shot.
I'm putting my money on frame-by-frame adjustments. Hope your shot's not too long, and good luck. AE doesn't have burn and dodge tools, but I'm sure there's a way to hack the paint brush to work like those by adjusting the blend mode. Or you could export the clip as a photoshop sequence and burn frame by frame in Photoshop.




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