View Full Version : ROTOSCOPE: Removing Cables
neofg 07-04-2005, 12:55 PM Hi all,cgtalkers... I have a little problem...
I have a 10 seconds movie(25x10 frames) and I need to remove cables that sustain a tent from every frames.... Now, this is my first time with this problem... My question is:
What is the technique used in this casistics? (Matrix, Hero...) Must I remove them frame for frame in Photoshop? And what are the suggestions for have a fluid sobstutution of cables with background? Is there a tutorial online?
Thanks all....
Black Knight
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scrimski
07-04-2005, 02:04 PM
Combustion comes along with some pdf-tutorials, one of them covers a wire removal. I cant remember which one, so I guess you have to look by yourself, just follow the link (http://www4.discreet.com/combustion/combustion.php?id=207).
neofg
07-04-2005, 06:43 PM
Ho Ho, Thanks...That's great... Is removing only made with compositing software? Or Photoshop is a good start for make it?
Suggestions are welcome...
scrimski
07-04-2005, 06:57 PM
If you have only one frame for the wire removal then Photoshop is OK for this job. And of course you can do this with as many frames as you want (or have to).
But it becomes very annoying after some hundred frames, you may loose your concentration and errors may occur, so I personally would choose a compositing software.
Pretorian
07-04-2005, 08:15 PM
neofg: did you find wich tutorial from combustion shows how to remove the wires?
hiphopcr
07-05-2005, 05:47 PM
With ten seconds of footage you'll have a few hundred frames, and like it's been said, you'll probably lose concentration. Plus if the camera's moving you'll definitely have a ghosting effect. If the camera is locked the job should be a snap, as long as the background isn't too busy. Download the 30-day trial of AE and see what you can get accomplished. Creativecow.net should have some wire-removal tips for AE.
Pretorian
07-05-2005, 08:03 PM
It's the 4th (paint) tutorial from combustion. If this helps others! :)
Studev
07-06-2005, 01:25 AM
Does the camera moves or stay still ?
mediasaurus
07-06-2005, 02:41 AM
It sounds like you're more in the realm of After Effects, which has all sorts of 3rd party plug-ins for this.
If you really want an amazing product, you just can't beat the WireRemoval tool in Furnace from The Foundry. I use them in Shake, but they're made for a lot of different programs. Truly amazing, but they cost $4000. I think there's a 30 day trial.
Regardless of what you use, you'll need to do at least a touch of roto/painting to finish off the last details. Furnace just gets you a lot further along in the process.
neofg
07-06-2005, 10:23 AM
Thanks all...
So I must use a compositing program...
Studev, the camera move, and cables are on trees....So I must replace foliage... Nice,uh?
I try to see combustion tutorials, when I have a copy to try....
And I have AE. Other suggestions are welcome... I understand what I must use, but I know NOTHING about rotoscoping...
Now, just another question.... If I have a static shot... and I want to add a matte painting, painted on a part of the frame of deinterlaced dv, applied in AE with a mask...
Can I obtain a realistic image, or there's other suggestions?
It look like cable removing...
Thanks very much
Studev
07-07-2005, 02:30 AM
In this case. If the camera moves and with leaves and trees background. Go and request for a demo from imagineersystems.com, called mokey, try it yourself and follow the tutorials. Conventional ways will take you days or weeks to do it, but this will take you only a day. Believe me i have done a lot of wire removal with an extremely busy background like trees, fog and lots of camera movements. For heavy textures like trees, and heavy thick wires you'll find mokey is the best solution. I have about 8 wires that need to be removes on the previous job, and it's about 6 sec long, shot on HD 1080p Sony Cinealta. It does the job very well. Of course there will be a remaining 10% that you need to touch up manually, but it shouldn't be a problem.
Regarding the matte painting. When you said realistic, there're lots of things that you need to consider in mind. Color temperature, contrast ratio, highlight & where the shadow's fall. soft edge compositing, saturation and remember ! grain or noise. When you want to superimpose a still image into a video, you'll need to recreates a grain that match to the original video. Existing add grain from AE should do the job if it's for DV, just a matter of getting a right number. Otherwise, it will just looks flat all the way.
And also, i wouldn't try to do stuff in interlace video. I will deinterlace the shots, finish it and re interlace it back.
Hope it helps
Studev
neofg
07-07-2005, 08:21 AM
Thanks Studev...That's all I needed... About the dv I shot it deinterlaced....so I haven't the problem... It's all very interesting...
Thanks very much for your time...
roto baggins
07-11-2005, 04:56 AM
what you're doing is called clean up. it's done all the time. if you do a patch job, better make make sure you add degrain and add grain to it, because if you dont have grain on a patch in a moving plate its going to look amature style. what you're can easy and difficult(depending on the shot). i've have done some wire removals that drived me crazy!
neofg
07-12-2005, 09:04 AM
Thank u Baggins!:scream:
rolandwoolner
07-12-2005, 05:06 PM
I found the Foundry's Furnace plugins for shake brilliant - I've only tried the 30day trial version. The 'wire removal' node works wonders even over detail such as trees and stuff - check it out if you have access to shake.
(sorry - looks like someones already mentioned this...)
neofg
07-12-2005, 06:19 PM
Oh, don't worry... Better 2 than 0... I never use shake, only after effect, and I wanna try combustion...
Thanks buddy!
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