Return-Path: Received: from mail1.g1.pair.com ([66.39.3.162] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP id 5108105 for AE-List@media-motion.tv; Sat, 15 Jun 2013 09:08:03 +0200 Received: from [10.0.1.21] (c-174-61-151-92.hsd1.wa.comcast.net [174.61.151.92]) by mail1.g1.pair.com (Postfix) with ESMTPSA id 193E82A7C4 for ; Sat, 15 Jun 2013 03:18:02 -0400 (EDT) User-Agent: Microsoft-Entourage/12.36.0.130206 Date: Sat, 15 Jun 2013 00:17:57 -0700 Subject: Re: [AE] How to identify motion artifacts not present in still? From: David Simons To: After Effects Mail List Message-ID: Thread-Topic: [AE] How to identify motion artifacts not present in still? Thread-Index: Ac5pmHWkZqjs9pNcy0SyclFMGKvK4g== In-Reply-To: Mime-version: 1.0 Content-type: multipart/alternative; boundary="B_3454100282_41441971" > 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_3454100282_41441971 Content-type: text/plain; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable Not sure this will work, but here=B9s an idea to try: duplicate the layer, shift it in time by 5 or 10 frames, set the anchor point with the pan behin= d tool to be the center of rotation (near the pole star), set the blend mode to Difference, then rotate the layer until it lines up exactly with the original layer. If the stitching error is local (i.e. the rest of the layou= t is spatially rigid), you should see just the error and rotated error, as everything else drops to black (modulo the lighting difference due to sunrise). If the stitching error has introduced a global crimp (i.e. part o= f the image has moved closer/further from the rest of the image), you=B9ll only be able to make one side or other of the crimp drop to black. But that should also help identify the error on a still frame, as you can see the edge of the black. This whole scheme depends on the stitching result being a uniform projection. It might not be. Good luck! For a moment I thought there could be a role here for the new Warp Stabilizer VFX in AE CC shipping on Monday. It has a reversible stabilization mode. Good for locking down some movement, doing some pixel surgery, and then de-stabilizing again (effectively tracking the surgery into the shot). But in this case, your artifact is already stationary relative to the frame, so locking down the content wouldn=B9t help. Hmm, except maybe it could repair a global crimp? No, I don=B9t think so. Just having a nice chat with myself now. -DaveS From: Stephen van Vuuren Reply-To: After Effects Mail List Date: Thu, 13 Jun 2013 11:58:32 -0400 To: After Effects Mail List Subject: [AE] How to identify motion artifacts not present in still? I=B9ve got a sequence of my film that has bedeviled me as well as the softwar= e developer of PTGUI (Panoramic stitching software). It=B9s a 10K timelapse sequence shot over 11 days created from 5 stitched 5D Mark II raw files. The stitching is done in PTGUI, however it appears impossible to fix according three of the best stitchers out there and the software developer. You can see it raw test from 1 day here. It=B9s really hard to see on web video but watch the upper part of the image and stars blink in and out. It=B9s a thin line or zone where star positions jump on the bad stitch line from the panoramic warp. =20 https://vimeo.com/65194332 password is stitch =20 I need to see if there is better method that trial and error to precisely find the line as you can only see it and therefore mask it while the clip i= s in motion. I=B9m not aware of any way in AE to mask a moving clip nor can think of any way to simulate it on a still. As its stars at 10k, I need to be nearly 1 pixel accurate in masking the region to apply the fix (time-remapping layers) to fix this stitch error. =20 stephen van vuuren 336.202.4777 =20 http://www.insaturnsrings.com/ http://www.sv2dcp.com/ http://www.sv2studios.com/ =20 A film is =AD or should be =AD more like music than like fiction. It should be = a progression of moods and feelings. The theme, what=B9s behind the emotion, th= e meaning, all that comes later. =ADStanley Kubrick =20 --B_3454100282_41441971 Content-type: text/html; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable Re: [AE] How to identify motion artifacts not present in still?</TIT= LE> </HEAD> <BODY> <FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><SPAN STYLE=3D'font-size:11pt= '>Not sure this will work, but here’s an idea to try: duplicate the la= yer, shift it in time by 5 or 10 frames, set the anchor point with the pan b= ehind tool to be the center of rotation (near the pole star), set the blend = mode to Difference, then rotate the layer until it lines up exactly with the= original layer. If the stitching error is local (i.e. the rest of the layou= t is spatially rigid), you should see just the error and rotated error, as e= verything else drops to black (modulo the lighting difference due to sunrise= ). If the stitching error has introduced a global crimp (i.e. part of the im= age has moved closer/further from the rest of the image), you’ll only = be able to make one side or other of the crimp drop to black. But that shoul= d also help identify the error on a still frame, as you can see the edge of = the black.<BR> <BR> This whole scheme depends on the stitching result being a uniform projectio= n. It might not be. Good luck!<BR> <BR> For a moment I thought there could be a role here for the new Warp Stabiliz= er VFX in AE CC shipping on Monday. It has a reversible stabilization mode. = Good for locking down some movement, doing some pixel surgery, and then de-s= tabilizing again (effectively tracking the surgery into the shot). But in th= is case, your artifact is already stationary relative to the frame, so locki= ng down the content wouldn’t help. Hmm, except maybe it could repair a= global crimp? No, I don’t think so. Just having a nice chat with myse= lf now.<BR> <BR> -DaveS<BR> <BR> <HR ALIGN=3DCENTER SIZE=3D"3" WIDTH=3D"95%"><B>From: </B>Stephen van Vuuren <<= a href=3D"stephen@sv2studios.com">stephen@sv2studios.com</a>><BR> <B>Reply-To: </B>After Effects Mail List <<a href=3D"AE-List@media-motion.= tv">AE-List@media-motion.tv</a>><BR> <B>Date: </B>Thu, 13 Jun 2013 11:58:32 -0400<BR> <B>To: </B>After Effects Mail List <<a href=3D"AE-List@media-motion.tv">AE= -List@media-motion.tv</a>><BR> <B>Subject: </B>[AE] How to identify motion artifacts not present in still?= <BR> <BR> <FONT COLOR=3D"#1F497D">I’ve got a sequence of my film that has bedevil= ed me as well as the software developer of PTGUI (Panoramic stitching softwa= re).<BR> <BR> It’s a 10K timelapse sequence shot over 11 days created from 5 stitch= ed 5D Mark II raw files. The stitching is done in PTGUI, however it appears = impossible to fix according three of the best stitchers out there and the so= ftware developer. You can see it raw test from 1 day here. It’s really= hard to see on web video but watch the upper part of the image and stars bl= ink in and out. It’s a thin line or zone where star positions jump on = the bad stitch line from the panoramic warp.<BR>  <BR> <a href=3D"https://vimeo.com/65194332">https://vimeo.com/65194332</a> passwor= d is stitch<BR>  <BR> I need to see if there is better method that trial and error to precisely f= ind the line as you can only see it and therefore mask it while the clip is = in motion. I’m not aware of any way in AE to mask a moving clip nor ca= n think of any way to simulate it on a still. As its stars at 10k, I need to= be nearly 1 pixel accurate in masking the region to apply the fix (time-rem= apping layers) to fix this stitch error.<BR>  <BR> </FONT><BR> <FONT COLOR=3D"#1F497D"><B>stephen van vuuren<BR> </B>336.202.4777<BR> <B> <BR> </B></FONT></SPAN><FONT COLOR=3D"#1F497D"><B><FONT SIZE=3D"2"><SPAN STYLE=3D'font= -size:10pt'><a href=3D"http://www.insaturnsrings.com/">http://www.insaturnsrin= gs.com/</a><BR> <a href=3D"http://www.sv2dcp.com/">http://www.sv2dcp.com/</a><BR> </SPAN></FONT></B></FONT><B><FONT SIZE=3D"2"><SPAN STYLE=3D'font-size:10pt'><FO= NT COLOR=3D"#7030A0"><a href=3D"http://www.sv2studios.com/">http://www.sv2studio= s.com/</a> <<a href=3D"http://www.sv2studios.com/">http://www.sv2studios.co= m/</a>> <BR> </FONT></SPAN></FONT><FONT COLOR=3D"#1F497D"><SPAN STYLE=3D'font-size:11pt'> <B= R> </SPAN></FONT></B><FONT COLOR=3D"#1F497D"><FONT SIZE=3D"2"><SPAN STYLE=3D'font-si= ze:10pt'><I>A film is – or should be – more like music than like= fiction. It should be a progression of moods and feelings. The theme, what&= #8217;s behind the emotion, the meaning, all that comes later.<BR> </I>–<B>Stanley Kubrick<BR> </B></SPAN></FONT></FONT><SPAN STYLE=3D'font-size:11pt'><BR> </SPAN></FONT><FONT FACE=3D"Times New Roman"><SPAN STYLE=3D'font-size:12pt'> <B= R> </SPAN></FONT><FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><SPAN STYLE=3D'= font-size:11pt'><BR> </SPAN></FONT> </BODY> </HTML> --B_3454100282_41441971--