From: "David Torno" Received: from atl4mhob11.registeredsite.com ([209.17.115.49] verified) by media-motion.tv (CommuniGate Pro SMTP 6.1.0) with ESMTPS id 7149007 for AE-List@media-motion.tv; Wed, 12 Sep 2018 02:17:00 +0200 Received: from null ([10.30.71.182]) by atl4mhob11.registeredsite.com (8.14.4/8.14.4) with ESMTP id w8C0RU5K032258 (version=TLSv1/SSLv3 cipher=AES256-SHA256 bits=256 verify=NO) for ; Tue, 11 Sep 2018 20:27:30 -0400 Date: Tue, 11 Sep 2018 20:27:30 -0400 (EDT) Reply-To: David Torno To: After Effects Mail List Message-ID: <14094103.132132.1536712050697@webmail.networksolutionsemail.com> In-Reply-To: References: Subject: Re: [AE] Photogrammetry an options? MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_132131_1746741430.1536712050671" X-Priority: 3 Importance: Medium X-Mailer: Open-Xchange Mailer v7.8.4-Rev36 X-Originating-Client: open-xchange-appsuite ------=_Part_132131_1746741430.1536712050671 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Alice Vision has Meshroom which is free, and apparently pretty powerful. https://alicevision.github.io/
On September 11, 2018 at 8:23 PM Chris Zwar wrote:

Thanks for all your advice. I=E2=80=99ll check in with a few 3D guys a= nd see what they think, hopefully one of them will come on board. I=E2=80= =99ll try having a quick play with some of the free / demo photogrammetry a= pps out there just to see what happens.

On 12 Sep 2018, at 10:09 am, David Torno < >AE-List@media-motion.tv> wrote:

Chris,

Photogrammetry of a car has to be shot very specifically. Ev= en then there is a massive amount of cleanup involved to remove noise in th= e scan, then you have to deal with UV texturing and such. Reflective smooth= surfaces like cars do not solve in photogrammetry. Think about 3D tracking= a shiny car. All of the specular hits and reflections confuse the software= and it has no clue what's what.

If you have a ton of photos of the car, and the shot is only= a pan, I would find the best photo that matches your shot angle, and do so= me basic modeling in 3D. Similar to this technique https://www.youtube.com/watch?v=3DC= 7vLZ0ddfSI

If you really need a full proper working 3D model, then you = will either have to find one online that has been built already, or hire a = 3D modeler to properly build it for you.
On September 11, 2018 at 7:56 PM Chris Zwar < >AE-List@media-motion.tv> wrote:


Hi all,

I=E2=80=99m doing some work on a short film with very limite= d resources, and so am trying to work out how to do some FX with effectivel= y 0 budget.

There=E2=80=99s one shot where the director would like to ad= d a car driving past on a road. There=E2=80=99s a basic background plate bu= t no option to shoot the car for real, the car would have to be a 3D model = of the specific car used earlier in the shoot, but which is no longer avail= able.

The specific car was extensively photographed so I=E2=80=99m= wondering if it would be feasible to get a simple 3D model made that would= be good enough for a 60 frame panning shot. There are lots of high-res pho= tos from all angles, I think the guy who took them intended to build a mode= l via photogrammetry.

I=E2=80=99ve never done it. I=E2=80=99m not a 3D artist. Jus= t wondering if anyone who has tried building a 3D model from photos can sha= re some advice so I know if it=E2=80=99s even an option. I see it as a poss= ible learning exercise, even to potentially animate the car in the lite C4D= that comes with AE.

Thanks in advance!


-Chris
+---End of message---+
To unsubscribe send any message to < >ae-list-off@media-motion.tv= >


=20 ------=_Part_132131_1746741430.1536712050671 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Alice Vision has Meshroom which is free, and apparently pretty= powerful.

https://alicevision.github.io/



<br= >
<blockquote type=3D"cite">
On September 1= 1, 2018 at 8:23 PM Chris Zwar <AE-List@media-motion.tv> wrote:
<br>
<br= >Thanks for all your advice.  I’ll check in with a few 3D gu= ys and see what they think, hopefully one of them will come on board.  = ;I’ll try having a quick play with some of the free / demo photogramm= etry apps out there just to see what happens.
<br class=3D"&#= 34;>
<div>
<br class=3D"">
= <blockquote type=3D"cite" class=3D"">
<= div class=3D"">
On 12 Sep 2018, at 10:09 am, David Tor= no <
<a href=3D"mailto:AE-List@media-motion.tv" class=3D""AE-List@media-motion.tv">>AE-List@media-motion.tv&#= 60;/a>> wrote:
</div>
<br class=3D"= Apple-interchange-newline">
<div class=3D"">= ;

<div class=3D"">
Chris, <br class=3D"">
<br class=3D""= ;>Photogrammetry of a car has to be shot very specifically. Even then t= here is a massive amount of cleanup involved to remove noise in the scan, t= hen you have to deal with UV texturing and such. Reflective smooth surfaces= like cars do not solve in photogrammetry. Think about 3D tracking a shiny = car. All of the specular hits and reflections confuse the software and it h= as no clue what's what.
<br class=3D"">
= <br class=3D"">If you have a ton of photos of the car,= and the shot is only a pan, I would find the best photo that matches your = shot angle, and do some basic modeling in 3D. Similar to this technique <a href=3D"https://www.youtube.com/watch?= v=3DC7vLZ0ddfSI" class=3D"">https://w= ww.youtube.com/watch?v=3DC7vLZ0ddfSI</a>
<br clas= s=3D"">
<br class=3D"">If you really = need a full proper working 3D model, then you will either have to find one = online that has been built already, or hire a 3D modeler to properly build = it for you.
<br class=3D"">
<blockq= uote type=3D"cite" class=3D"">
On September = 11, 2018 at 7:56 PM Chris Zwar <
<a href=3D"mailto:<= a href=3D"mailto:AE-List@media-motion.tv">AE-List@media-motion.tv" = class=3D""AE-List@media-motion.tv">>= ;AE-List@media-motion.tv</a>> wrote:
<br cla= ss=3D"">
<br class=3D"">
= <br class=3D"">Hi all,
<br class=3D""= ;>
<br class=3D"">I’m doing some work = on a short film with very limited resources, and so am trying to work out h= ow to do some FX with effectively 0 budget.
<br class=3D"= ;">
<br class=3D"">There’s one sho= t where the director would like to add a car driving past on a road. There&= #8217;s a basic background plate but no option to shoot the car for real, t= he car would have to be a 3D model of the specific car used earlier in the = shoot, but which is no longer available.
<br class=3D"&#= 34;>
<br class=3D"">The specific car was ext= ensively photographed so I’m wondering if it would be feasible to get= a simple 3D model made that would be good enough for a 60 frame panning sh= ot. There are lots of high-res photos from all angles, I think the guy who = took them intended to build a model via photogrammetry.
<br = class=3D"">
<br class=3D"">I’v= e never done it. I’m not a 3D artist. Just wondering if anyone who ha= s tried building a 3D model from photos can share some advice so I know if = it’s even an option. I see it as a possible learning exercise, even t= o potentially animate the car in the lite C4D that comes with AE.
= <br class=3D"">
<br class=3D"">= ;Thanks in advance!
<br class=3D"">
&= #60;br class=3D"">
<br class=3D"">-C= hris
<br class=3D"">+---End of message---+
= <br class=3D"">To unsubscribe send any message to = 0;
<a href=3D"mailto:ae-list-off@media-motion.tv" class=3D""ae-list-off@media-motion.tv">>ae-list-off@media-mo= tion.tv</a>>
</blockquote>
<= /div>
</div>
</blockquote>
</= div>
<br class=3D"">
</blockquote> <= br> <br> 

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