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Remove background scenery

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Suley Suleman
Remove background scenery
on Feb 25, 2013 at 10:00:25 pm

Hi Guys, basically on the weekend we were at an event and were to interview some of the guests, the plan was for it to be a sat down interview but for some reason the pr company choose to move it to a wall board full of adverts :( Now The subject moves a little in the actual interview which is shot in HD and the wall board is white. What I am looking to do is keep the subject but remove the wall board.

I have tried ultra key in adobe premiere but I cant seem to get rid of the logo's, if anything it changes the wall board from a grey to a bright white. I have attached a sample clip in which he does move alot but in the main clip he is more still.

Any idea how i can remove the background board at all? If someone wants to have a play i have uploaded a sample clip to http://streem.uk.to/files/861_g174x/MVI_1415.MOV and also added screengrab of the footage to show what i mean here http://oi45.tinypic.com/9lfi86.jpg

I was considering maybe create a photoshop image with the screengrab and where the logo's are create a few small layers and cover with a similar colour to overlap?


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Steve Crow
Re: Remove background scenery
on Feb 25, 2013 at 10:28:29 pm

What you may want to investigate first are masking/matte filters to basically define a shape around the person - everything outside that shape can be turned white or any color you wish, you could even put in a simulated background much like in doing green screen work.

UPDATE: I TRIED THIS OUT IN YOUR SAMPLE FOOTAGE AND HE IS MOVING WAY TOO MUCH FOR THIS TO BE EFFECTIVE FOR YOU

But that will only take you so far, to get a decent result you will probably have to turn to a tool like Adobe After Effects and its built in "rotoscoping" tools that "cut out" an object from the background, frame by frame. Since the object (the person) is moving during the clip it's a tedious process that software can help you with but be prepared for spending a great deal of time on this.

I am sure you already know you have a rather big exposure problem with the footage too, because the talent is standing in front of a well light background and he is wearing all black that the camera's exposure settings were set using the background instead of the foreground (the talent) To me this shot reminds me of a backlight subject such as you might see when a person is filmed standing in a rather dark room and they are standing in front of a large window through which bright sunshine is streaming through.


Steve Crow
Crow Digital Media
http://www.CrowDigitalMedia.com


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Steve Crow
Re: Remove background scenery
on Feb 25, 2013 at 11:46:15 pm

PS: Just so that you don't feel so bad you are not the only person who makes this mistaske...I did the exact same thing (in reverse) early in my career when trying to film an interview outdoors at a park with a celebrity (well he is very well known in his world!).

It was too bright outside in the middle of the lawn so I suggested we move under some trees which wasn't a bad idea so ten points for me and my smart decision. Then I exposed for the interview subject and did pretty good there too....BUT my background was SO bright compared to the foreground that everything behind him was totally blown out...all the footage was ruined and I couldn't save it for my client. I stil cringe about that mistake and hope that I never run into that person again.

If I had this type of gear I could have put up diffusers/scrims/silks above and behind the talent to cut down on the background light but I didn't own that stuff and in fact I still don't. What I really should have done is insist we move to another location with more even lighting but I didn't so minus 80 points for me. I'm still nervous to this day about shooting in super bright light outdoors to be honest!

Steve Crow
Crow Digital Media
http://www.CrowDigitalMedia.com


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Suley Suleman
Re: Remove background scenery
on Feb 26, 2013 at 8:14:07 pm

Thanks Steve, I just tried some roto and its almost halfway there.

The staff member was set to do seated and they changed the plans which really didnt go down well with the staff member. I should be getting the full interview in which he is more still I understand :)

The Roto effect in AE is there any over ride that can be used? See the sample video http://content.bitsontherun.com/videos/NVWLkHS3-aOUCj4uc.mp4 you will note there are a few logo's still shown on the new background. In AE when I roto it creates the frame and when I try and draw over where i dont want it to draw nothing seems to change see http://oi51.tinypic.com/20v1bty.jpg Im wondering is there any way I can alter it or something?

@Mike Smith Thanks for the advise, any advise on how to get a better roto would be apreciated

Thanks
Suley


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Steve Crow
Re: Remove background scenery
on Feb 26, 2013 at 8:41:02 pm

I've looked at your still image and around the top of the head and his shoulder and face are logos that should be OUTSIDE the pink line meaning not included in the mask - you can reverse the rotobrush tool to indicate what you DON"T want to include and that's what you need to do

You may have to make the corrections and then move the playhead a few frames ahead to check if the mask is still good or if you have to make further corrections. As he moves in the frame the software is supposed to detect that and to change the shape of the mask but it sometimes needs help with that - which is why this rotoscoping task is sooo tedious.

Steve Crow
Crow Digital Media
http://www.CrowDigitalMedia.com


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Suley Suleman
Re: Remove background scenery
on Feb 26, 2013 at 9:17:32 pm

Stupid question but how do i reverse it? Spent last few hours trying to work it out and not got too far with it. I have moved the frame and tried to draw another line to show AE to go around it but no actual luck with it :(

thanks in advance!


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Steve Crow
Re: Remove background scenery
on Feb 26, 2013 at 9:27:08 pm

Ha ha I've never actually used this particular tool but I'd first try holding down the "alt" or "command" key or if that fails I'd go find a tutorial video on YouTube, there are tons of great ones, just do a search!

Steve Crow
Crow Digital Media
http://www.CrowDigitalMedia.com


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Suley Suleman
Re: Remove background scenery
on Feb 27, 2013 at 9:34:43 pm

Thanks Steve, almost worked it out, Been using Moca to rota and its doing a good job! Just now need to create a better mask but almost there. http://oi55.tinypic.com/9aa5id.jpg Now i just need to find a better background or something for an interview or not as bright so it dosent look as artifitial, any suggestions steve? Thanks in advance

For anyone whos intrested see the tutorial here http://www.writerdirector.com/2012/02/reviewtutorial-rotoscoping-with-mocha... was really good!


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Steve Crow
Re: Remove background scenery
on Feb 27, 2013 at 10:42:14 pm

Since the person on camera is some kind of performer, I'd look for images of film, tv or commercial sets where you can see cameras, lights, flags and other production gear in the background to give the idea that he is taking a break from his filming to make the video you are editing. Try Google search for Creative Commons images, try Flickr for Creative Commons images - or buy an image from iStockPhoto or a similar place - you can easily darken an image if that's what you need.

Steve Crow
Crow Digital Media
http://www.CrowDigitalMedia.com


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Mike Smith
Re: Remove background scenery
on Feb 26, 2013 at 9:29:08 am

If you have After Effects you could try out the RotoBrush toolo on the footage once you've cut it.

http://www.kenstone.net/fcp_homepage/rotobrush_ae_cs5_douglas.html
http://tv.adobe.com/watch/after-effects-cs5-feature-tour/rotoscope-with-rot...


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Sareesh Sudhakaran
Re: Remove background scenery
on Feb 26, 2013 at 10:23:09 am

You're basically trying to rotoscope the person, for which AE has tools, but aren't good enough for the footage you have shot. To make it seamless, you'll need something like Mocha or the roto tool in Nuke.

In any case, it's too much work, even with the best tools.

Get the Free Comprehensive Guide to Rigging ANY Camera - one guide to rig them all - DSLRs to Reds to the Arri Alexa.


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Mike Smith
Re: Remove background scenery
on Feb 26, 2013 at 7:35:26 pm

I suggest that if you have AE you try the tool out for yourself: it can be very effective.






http://www.videocopilot.net/forum/viewtopic.php?f=11&p=208196


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