Return-Path: Received: from mail4.webfaction.com ([74.52.233.2] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP-TLS id 2473248 for AE-List@media-motion.tv; Mon, 07 Jan 2008 20:26:40 +0100 Received: from [192.168.1.100] (c-71-202-60-99.hsd1.ca.comcast.net [71.202.60.99]) (authenticated bits=0) by mail4.webfaction.com (8.13.1/8.13.3) with ESMTP id m07JRfbd014561 for ; Mon, 7 Jan 2008 13:27:42 -0600 User-Agent: Microsoft-Entourage/11.3.6.070618 Date: Mon, 07 Jan 2008 11:27:35 -0800 Subject: Re: [AE] Mocha and AE corner pin From: Peter Litwinowicz To: After Effects Mail List Message-ID: Thread-Topic: [AE] Mocha and AE corner pin Thread-Index: AchRY1r5mbsb6L1WEdy/UgAKlbriPA== In-Reply-To: Mime-version: 1.0 Content-type: multipart/alternative; boundary="B_3282550062_26165980" > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3282550062_26165980 Content-type: text/plain; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable > I have been enjoying using Mocha for tracking surfaces such as computer > screens on moving camera shots and replacing the content. I am always ama= zed > at how well Mocha handles most situations, albeit a kind of slow for long > shots. >=20 > My biggest complaint is with the quality of the AE corner pin filter. Tod= ay I > was placing a web page with a blue background and text on a white backgro= und > onto the computer. (The information from Mocha, when pasted into AE, util= izes > the AE corner pin to achieve perspective on the layer being composited, i= n > this case a web page for the computer screen) >=20 > Where the white edge of the text page meets the blue background there is = a > very noticeable aliasing of the edge. Sort of a saw-tooth edge effect. To= get > rid of it I applied a blur as I needed to soften the inserted image a bit > anyway. Thing is that the aliasing shouldn't be there with the corner pin > filter and I think that Adobe needs to look at re-engineering this filter= a > bit. It's been around since the beginning and my guess is that the code h= as > not been improved. >=20 > Just for fun I created the same perspective using CC Powerpin on a layer = and > guess what... no aliasing. Hmmmm, why is this plug in so much better? =A0Sc= reen > grabs or project available at no cost to any Adobe Engineer who is readin= g > this. >=20 Yeah, this is same reason that we created a corner pin in our RE:Map set of plugins (sorry for the blatant commercial). That, and the fact that you often want to track corners of something in the image sequence but then extend the mapping beyond the 4 corners in the perspective space (which you can do with our plugin). (of course RE:Map does a lot more other than corner pinning, but that=B9s a bit off-topic). Pete Litwinowicz http://www.revisionfx.com > =20 >=20 >=20 --B_3282550062_26165980 Content-type: text/html; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable Re: [AE] Mocha and AE corner pin
I have been enjoying using Mocha for tracking surfaces such as comput= er screens on moving camera shots and replacing the content. I am always ama= zed at how well Mocha handles most situations, albeit a kind of slow for lon= g shots.

My biggest complaint is with the quality of the AE corner pin filter. Today= I was placing a web page with a blue background and text on a white backgro= und onto the computer. (The information from Mocha, when pasted into AE, uti= lizes the AE corner pin to achieve perspective on the layer being composited= , in this case a web page for the computer screen)

Where the white edge of the text page meets the blue background there is a = very noticeable aliasing of the edge. Sort of a saw-tooth edge effect. To ge= t rid of it I applied a blur as I needed to soften the inserted image a bit = anyway. Thing is that the aliasing shouldn't be there with the corner pin fi= lter and I think that Adobe needs to look at re-engineering this filter a bi= t. It's been around since the beginning and my guess is that the code has no= t been improved.

Just for fun I created the same perspective using CC Powerpin on a layer an= d guess what... no aliasing. Hmmmm, why is this plug in so much better? =A0Scr= een grabs or project available at no cost to any Adobe Engineer who is readi= ng this.

Yeah, this is same reason that we created a corner pin= in our RE:Map set of plugins (sorry for the blatant commercial).  That= , and the fact that you often want to track corners of something in the imag= e sequence but then extend the mapping beyond the 4 corners in the perspecti= ve space (which you can do with our plugin).  

(of course RE:Map does a lot more other  than corner pinning, but that= ’s a bit off-topic).
Pete Litwinowicz
http://www.revisionfx.com





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