From: "Zack Lovatt" Received: from mail-yk0-f169.google.com ([209.85.160.169] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP-TLS id 5493892 for AE-List@media-motion.tv; Thu, 05 Jun 2014 15:27:23 +0200 Received: by mail-yk0-f169.google.com with SMTP id 200so786071ykr.14 for ; Thu, 05 Jun 2014 06:27:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:content-type; bh=4l3cxbyMNdaX2R29vasxTEBVXrmNJMgGvT2XQiJsJ0o=; b=RV1CXeqDjNtTfmZj9ERelTWPa1tDAEB0kqWEQ1J/CSYQ2CxC9vFJqbV7I52MNXmcIo cI30d58pl4jnYLSmiI20GNLqu5EPYpxZHEhAB9k5X/nmlkhJGo9AANG4sizW/1BDJ3SY 8W5RkDOmmKxTAp2t41LBTbLjLKCbuEpSmPVBb183wGi8c7tZj/0xWpbTCKg9UsuvfXUr wHhtwho5bFrguSVGvL5AxYss8sdo66HVMsE05hrncsLLbDsrc50Mk/WdDYDLrihFeWwH azgV89UpduaaQy96CWsPAVCq/hUBDClx7+dvN4hVmK2jDFrNZ+/PH184tZw1srex94IQ kO3A== X-Gm-Message-State: ALoCoQkl4i2UXMmitt4x1GxKu3b0mrvoh56P3zZ16ULoxmdewwe6ZEpS0+KHVVIq+yFXlG/7zYPV X-Received: by 10.236.19.78 with SMTP id m54mr35408985yhm.134.1401974842148; Thu, 05 Jun 2014 06:27:22 -0700 (PDT) MIME-Version: 1.0 Received: by 10.170.94.66 with HTTP; Thu, 5 Jun 2014 06:26:40 -0700 (PDT) X-Originating-IP: [75.119.238.150] In-Reply-To: References: Date: Thu, 5 Jun 2014 09:26:40 -0400 Message-ID: Subject: Re: [AE] Tracking Iphone/Ipad screen replacement - green or not? To: After Effects Mail List Content-Type: multipart/alternative; boundary=089e01634dce735eb204fb16b445 --089e01634dce735eb204fb16b445 Content-Type: text/plain; charset=UTF-8 I've used Rotobrush on a few of these projects and it's been fantastic. Usually a mix of actual mattes for the screen/screen contents from Mocha combined with rotobrush to get the hands out of the way and it's all good. Only difficult part is a potential lack of contrast between the hand and the footage (or motion blur), but those are prevalent concerns to look out for in this work anyhow. Zack Lovatt 416.786.4129 www.zacklovatt.com On 5 June 2014 07:20, Phil Spitler wrote: > I have never thought to use rotobrush, I'm curious if people think it's > actually a usable tool for this kind of job, if so then I would switch to > using a grey instead of green. > > Phil > > > > > *Phil Spitler* | Creative Technologist | *Bonfire Labs* | t : > 415.394.8200 m : 415.571.3139 > > Website | Facebook > | LinkedIn > > > On Jun 5, 2014, at 4:16 AM, Phil Spitler wrote: > > I go back and forth too, most recently I made a dark green screen with > some small patterned tracking markers in the corners. > > The green allowed me to key the fingers off for both the main finger tap > and the reflections. > > It needs to be dark green to avoid spill from the screen contaminating the > finger. > > I used the tracking data to erase the tracking markers from the reflection > pass. > > Phil > > > > > *Phil Spitler* | Creative Technologist | *Bonfire Labs* | t : > 415.394.8200 m : 415.571.3139 > > Website | Facebook > | LinkedIn > > > On Jun 3, 2014, at 7:47 AM, Robert Kjettrup > wrote: > > > 2014-06-03 14:41 GMT+02:00 Roei Tzoref : > >> thank you Robert. but wouldn't the bright screen lose the blend mode >> option in the composite after?. >> notice the glow and flare coming from >> the sun creating that lighting on the screen, >> and of course there are real reflections where you see the girls face >> (sec 37). >> >> when you put and image on that black and use screen mode you're pretty >> much done. (if the track is good..) >> >> >>> > > yes, you would loose the easy blend mode compositing, but it was more to > get the screen lighting on the hand that is much harder to fake than the > reflection. There is almost always a trade-off for doing it one way or the > other. So there really is no 1 way to do it correctly, it all depends on > the shot and what lighting you have. > > And thanks to Rick about the noise pattern trick, never really thought > about that, but it ofcourse makes perfect sense when using Mocha. i guess > you have various noise patterns sizes depending on how far away the screen > is in the shot? > > Robert > > > > > --089e01634dce735eb204fb16b445 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
I've used Rotobrush on a few of these projects and it&= #39;s been fantastic. Usually a mix of actual mattes for the screen/screen = contents from Mocha combined with rotobrush to get the hands out of the way= and it's all good. Only difficult part is a potential lack of contrast= between the hand and the footage (or motion blur), but those are prevalent= concerns to look out for in this work anyhow.

Zack Lov= att
416.786.4129


On 5 June 2014 07:20, Phil Spitler <AE-List@media-motion.tv> wrote:
I have never thought to use rotobrush, = I'm curious if people think it's actually a usable tool for this ki= nd of job, if so then I would switch to using a grey instead of green.

Phil




Phil Spitler= =C2=A0 |=C2=A0 Creative Technologist =C2=A0 |=C2=A0 Bonfire Labs=C2=A0 |=C2=A0 t : 415.394.8200=C2=A0 m : 415.571.3139

Website | Facebook | <= a href=3D"http://www.linkedin.com/company/235257?trk=3Dtyah" target=3D"_bla= nk">LinkedIn

On Jun 5, 2014, at 4:16 AM, Phil= Spitler <A= E-List@media-motion.tv> wrote:

I go back and forth too, most recently I made a dark green screen with some= small patterned tracking markers in the corners.

The gr= een allowed me to key the fingers off for both the main finger tap and the = reflections.

It needs to be dark green to avoid spill from the scree= n contaminating the finger.

I used the tracking da= ta to erase the tracking markers from the reflection pass.

Phil




=
Phil Spitler= =C2=A0 |=C2=A0 Creative Technologist =C2=A0 |=C2=A0 Bonfire Labs=C2=A0 |=C2=A0 t : 415.394.8200=C2=A0 m : 415.571.3139

Website | Facebook | <= a href=3D"http://www.linkedin.com/company/235257?trk=3Dtyah" target=3D"_bla= nk">LinkedIn

On Jun 3, 2014, at 7:47 AM, Robert Kjettrup <AE-List@media-motion.tv= > wrote:


2014-06-03 14:41 GMT+02:00 Roei Tzoref <AE-List@media-motion.tv>:
thank you Robert. but would= n't the bright screen lose the blend mode option in the composite after= ?.=C2=A0
notice the glo= w and flare=C2=A0coming from the sun creating that lighting on the scre= en,
and of course there are real reflections where you see the girls face=C2=A0(sec 37).= =C2=A0

when you put and image on that black and us= e screen mode you're pretty much done. (if the track is good..)



=

yes, you would loose the easy blend mode compositing, b= ut it was more to get the screen lighting on the hand that is much harder t= o fake than the reflection. There is almost always a trade-off for doing it= one way or the other. So there really is no 1 way to do it correctly, it a= ll depends on the shot and what lighting you have.

And thanks to Rick about the noise pattern trick, never= really thought about that, but it ofcourse makes perfect sense when using = Mocha. i guess you have various noise patterns sizes depending on how far a= way the screen is in the shot?

Robert
=C2=A0



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