Return-Path: Received: from mail-ve0-f174.google.com ([209.85.128.174] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP-TLS id 5021462 for AE-List@media-motion.tv; Tue, 02 Apr 2013 07:05:19 +0200 Received: by mail-ve0-f174.google.com with SMTP id jz10so39087veb.33 for ; Mon, 01 Apr 2013 22:12:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:content-type; bh=HmL8VR7Oc3qgEHO+sLRP6OR5Euej5yp1060abwS/PKA=; b=u5X9Htu0XrwTbxqUoM7jISKnlobvejksT71W/I8HyoT5w5MKrfPSS9TZkA47ZZsQXA 0PAFT0bLhgGd5FDA8r2BtTXAjYvOPvc16LWjM2Vdmr0cs95mJf1Ud60lN2YmSQEMklJ5 H7eQqlUni/+0llj0O/eQ5o7Khcc57Ba813XYMeYLLTQnCLbarlbDT5E610BrGD5KE1ZP 2JYJwBwUUB0WKf69qm73AhulsPMAsW2Z/pfKXSkokZrW4OF4C5i1Jl8SD4cwIJrdR3Zj pT+CqzHobbStgr1nb8D+c37VgtQ0Ctfn+Spfso4d9qQ6dkojP6FysYC5547HjJmqs7yt 4Vcg== MIME-Version: 1.0 X-Received: by 10.58.144.133 with SMTP id sm5mr11533788veb.23.1364879576129; Mon, 01 Apr 2013 22:12:56 -0700 (PDT) Received: by 10.52.92.169 with HTTP; Mon, 1 Apr 2013 22:12:55 -0700 (PDT) In-Reply-To: References: Date: Mon, 1 Apr 2013 22:12:55 -0700 Message-ID: Subject: Re: [AE] spill suppression From: Darby Edelen To: After Effects Mail List Content-Type: multipart/alternative; boundary=047d7b675b264be6fc04d959ca57 --047d7b675b264be6fc04d959ca57 Content-Type: text/plain; charset=ISO-8859-1 A different Channel Mixer setup can pull a good spill matte. In the case of a straight up average R+B spill suppression you'd zero out all the fields in Channel Mixer and enter for the Green channels: Green-Red: -50 Green-Green: 100 Green-Blue: -50 Then the green channel will contain the spill matte. Shift Channels can move that information around to use for either an Alpha or Luma matte. Sure it's not as easy as having a one stop solution, but it's not too much of a pain either :) On Mon, Apr 1, 2013 at 6:31 PM, Chris Zwar wrote: > Thanks for these links, I enjoyed the videos. What a shame the native > Cinegobs plugins are Windows only, it would be nice to be able to pull a > spill-matte so easily on a Mac. > > -Chris > > On 10/03/2013, at 9:55 AM, Daniel Griffin wrote: > > I've found the Green Limited by the Average of Red and Blue technique very > useful and has given me the best spill suppression results so far: > > > http://ae.tutsplus.com/tutorials/workflow/advanced-spill-suppression-methods/ > > > Daniel Griffin > www.kubikafilms.com > > > 2013/3/9 Chris Meyer > >> Many thanks, and absolutely nothing personal, but I have a client >> confidentiality issue on these particular shots that I don't want to tread >> anywhere near. >> >> - Chris >> >> ________________________________________________ >> Chris Meyer | Crish Design >> http://www.crishdesign.com >> >> >> On Mar 9, 2013, at 12:48 PM, Andrew Embury wrote: >> >> I'd love to have a crack at that too Chris! >> >> Cheers. >> >> - Andrew >> >> >> On 2013-03-09, at 2:13 PM, Jack Tunnicliffe wrote: >> >> Chris: >> >> Can you send me a frame. I'd be curious if I could focus in on the area >> you're talking about. Maybe a screen grab with some arrows or pointers >> showing me the area as well as a frame of the original, like a tiff. >> >> Jack Tunnicliffe >> Java Post Production >> 402, 2206 Dewdney ave. >> Regina, SK >> Canada >> S4R 1H3 >> P. 306-777-0150 >> cell. 306-536-4321 >> www.javapost.ca >> ______________ >> >> >> >> On Mar 9, 2013, at 10:36 AM, Chris Meyer wrote: >> >> I have found the edge decontamination of Refine Matte very useful in some >> situations, but not all. The two shots causing me grief this week have 1) a >> large amount of spill across the bare shoulder/upper arm of an actress, and >> 2) more than half way across the shirt on the back of an actor who is >> turning. Unfortunately, when I increase the decontamination range on Refine >> Matte, it does something very ugly to the color channel information - what >> looks like a edge pixel repeat, instead of a simple removing of color from >> otherwise detailed pixels that I wish to keep. >> >> - Chris >> >> ________________________________________________ >> Chris Meyer | Crish Design >> http://www.crishdesign.com >> >> >> On Mar 9, 2013, at 12:41 AM, Todd Kopriva wrote: >> >> Check out the Refine Matte effect for the motion blur color >> decontamination. >> >> On Friday, March 8, 2013, Chris Zwar wrote: >>> >>> >>> >>> I don't know if it's technically 'spill', but motion blur is the tricky >>> thing to deal with when keying. If the key isn't set up well then you can >>> end up with footage that looks like it has a spill problem in moving areas >>> - actually the screen is showing through semi-transparent regions. >>> >> >> >> -- >> -------------------------------- >> Todd Kopriva >> 1510 E Alder St >> Seattle, WA 98122 >> (206)437-2296 >> -------------------------------- >> "Ultimately, all knowledge is self-knowledge." >> - Bruce Lee >> >> >> >> >> > > --047d7b675b264be6fc04d959ca57 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
A different Channel Mixer setup can pu= ll a good spill matte.=A0 In the case of a straight up average R+B spill su= ppression you'd zero out all the fields in Channel Mixer and enter for = the Green channels:

Green-Red: -50
Green-Green: 100
Green-Blue: -50=

Then the green channel will contain the spill matte.=A0 Shift= Channels can move that information around to use for either an Alpha or Lu= ma matte.=A0 Sure it's not as easy as having a one stop solution, but i= t's not too much of a pain either :)


On Mon,= Apr 1, 2013 at 6:31 PM, Chris Zwar <chris@chriszwar.com> = wrote:
Thanks f= or these links, I enjoyed the videos. =A0What a shame the native Cinegobs p= lugins are Windows only, it would be nice to be able to pull a spill-matte = so easily on a Mac.

-Chris

On 10/03/2013, at 9:55 = AM, Daniel Griffin <dagrial@gmail.com> wrote:

I've found the Green Limited by the Average of Red and Blue=A0technique= =A0very useful and has given me the best spill=A0suppression=A0results so f= ar:



Daniel Griffin
www.kubikafilms.com


2013/3/9 Chris Meyer &= lt;chris@crishde= sign.com>
Many thanks, and absolutely nothing per= sonal, but I have a client confidentiality issue on these particular shots = that I don't want to tread anywhere near.

=A0- Chris

________________________________________________
Chris Meyer | Crish Des= ign
http://www= .crishdesign.com

On Mar 9, 2013, at 12:48 PM, Andrew Embury wr= ote:

I'd love= to have a crack at that too Chris!

Cheers.=A0

- Andrew


On 2013-03-09, at 2:13 PM, Jack T= unnicliffe <jack@j= avapost.ca> wrote:

Chris:
Can you send me a frame. I'd be curious if I could focus= in on the area you're talking about. Maybe a screen grab with some arr= ows or pointers showing me the area as well as a frame of the original, lik= e a tiff.

Jack Tunnicliffe
Java Post Production=
402, 2206 Dewdney ave.
Regina, SK
Canada
S4R 1H3
______________
<= /span>

=

On Mar 9, 2013, at 10:36 AM, Chris Meyer <chris@crishdesign.com> wr= ote:

I have found the edge decontamination of Refine Matte very useful in some = situations, but not all. The two shots causing me grief this week have 1) a= large amount of spill across the bare shoulder/upper arm of an actress, an= d 2) more than half way across the shirt on the back of an actor who is tur= ning. Unfortunately, when I increase the decontamination range on Refine Ma= tte, it does something very ugly to the color channel information - what lo= oks like a edge pixel repeat, instead of a simple removing of color from ot= herwise detailed pixels that I wish to keep.=A0

=A0- Chris

________________________________________________
Chris Meyer | Crish Des= ign
http://www= .crishdesign.com

On Mar 9, 2013, at 12:41 AM, Todd Kopriva wrote:

Check out the=A0Refine Matte effect for the motion b= lur color decontamination.

On Friday, March 8, 2013, Chris Zwar wro= te:


I don't know if it's technically 'spill', but motion blur i= s the tricky thing to deal with when keying. =A0If the key isn't set up= well then you can end up with footage that looks like it has a spill probl= em in moving areas - actually the screen is showing through semi-transparen= t regions. =A0


--
--------------------------------
Todd Kopriv= a
1510 E Alder St
Seattle, WA 98122
(206)437-2296
---------= -----------------------
"Ultimately, all knowledge is self-knowledge."
=A0=A0 - Bruce Lee



<= br>

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