Return-Path: Received: from mail-vc0-f179.google.com ([209.85.220.179] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP-TLS id 5021644 for AE-List@media-motion.tv; Tue, 02 Apr 2013 10:39:04 +0200 Received: by mail-vc0-f179.google.com with SMTP id gf12so161699vcb.24 for ; Tue, 02 Apr 2013 01:46:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-received:mime-version:in-reply-to:references:from:date:message-id :subject:to:content-type:x-gm-message-state; bh=gWXj04TvCUmA7DhV7TW0dme7073pNoRlgykn3LLsaIo=; b=dyeUNKngKVFAxvLCgYoy9gBk069yTNgLdCNzFaJgzVABfySOhbfgCSTHAIMYX2WLjV 7UmIZPJf0l1yMPUJeoNntvid8VY9dCugr4R5SDRuPAwNYbnUP5Ox06qpaNsHqvtSrdCb W6L8Y2RMPMduBdNyoxFDHFwSSHmUqBY4mpgLDRzfSezYpG8hhGB/4v+M133RDRjojdy7 toHIlYIkXER6Um+FdhqsTKxhVnyQtTjnEDELtAj/NYfvkTWxlStZAb4twNJCsiBKP30X FKhBK6zx6iQfftGu+BK7TmRoqzC/yRdCcMBtoFIIeCQtyVfW1RJbLJiDHtVgha6VHcJn 3/6Q== X-Received: by 10.220.119.147 with SMTP id z19mr11800869vcq.69.1364892401540; Tue, 02 Apr 2013 01:46:41 -0700 (PDT) MIME-Version: 1.0 Received: by 10.58.241.161 with HTTP; Tue, 2 Apr 2013 01:46:21 -0700 (PDT) In-Reply-To: References: From: Robert Kjettrup Date: Tue, 2 Apr 2013 10:46:21 +0200 Message-ID: Subject: Re: [AE] spill suppression To: After Effects Mail List Content-Type: multipart/alternative; boundary=bcaec54d4cfcc031db04d95cc607 X-Gm-Message-State: ALoCoQkfTKAeL+xzRDsldZFu1nKE/spITNI1s0NdI8NkOpk13ddth0bTLuQwqWPnhR1SSDviTkDX --bcaec54d4cfcc031db04d95cc607 Content-Type: text/plain; charset=ISO-8859-1 Hi Darby On my last two keying jobs i used your tip with channel mixer set to GR:-50, GG:0, GB:-50 and setting the layer to DarkerColor with great results, much better than the native despill in Keylight, thanks for that tip. :-) Just tried this other channelmixer usage, and that i can also see as a good alternative, but it is a bit harsher in its despill in darker areas, more like the default despill in keylight. I setup the layer with the channelmixer effect as a difference blending mode. Correct? it looks correct :-) - Robert 2013/4/2 Darby Edelen > 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 >>> >>> >>> >>> >>> >> >> > --bcaec54d4cfcc031db04d95cc607 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Hi Darby

On my last two keying jo= bs i used your tip with channel mixer set to GR:-50, GG:0, GB:-50 and setti= ng the layer to DarkerColor with great results, much better than the native= despill in Keylight, thanks for that tip. :-)

Just tried this other channelmixer usage, a= nd that i can also see as a good alternative, but it is a bit harsher in it= s despill in darker areas, more like the default despill in keylight. I set= up the layer with the channelmixer effect as a difference blending mode. Co= rrect? it looks correct :-)

- Robert



2013/4/2 Darby Ed= elen <dedelen@gmail.com>
A diffe= rent Channel Mixer setup can pull a good spill matte.=A0 In the case of a s= traight 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.=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>


--bcaec54d4cfcc031db04d95cc607--