From: "Chris Zwar" Received: from mail-pl1-f170.google.com ([209.85.214.170] verified) by media-motion.tv (CommuniGate Pro SMTP 6.1.0) with ESMTPS id 7149005 for AE-List@media-motion.tv; Wed, 12 Sep 2018 02:13:00 +0200 Received: by mail-pl1-f170.google.com with SMTP id t19-v6so58837ply.13 for ; Tue, 11 Sep 2018 17:23:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chriszwar-com.20150623.gappssmtp.com; s=20150623; h=from:mime-version:subject:date:references:to:in-reply-to:message-id; bh=393Ru4nNcGSZ0lTqVTuY1UxOhVeRYoQCeTSLNrDeSWI=; b=cI87hnzkPN/RzuiEGCiVjOe8ta6MqKv/fdbWyBjgXBQZpc6MXEXrCvpTyjku7tfSim kwEIQHj0ubM4KwLgahy+Oep6/GfcZSRZifS1+KIeGM07lEEvbOiJECKtXlUqm1WB6HEL 4JuA/I1NxbwRDnbWsDgrdS8F0VT/HiXl0RN496fkORZfPe5UCO7Az9xuO9yketTrsxwv aV/SzmfnLD0Lqm4YSS2ljGDKA3MxNaH0KpXAMLp1+8vz2aj2EI2UjhoH3uUsVyjkRs1Q jWT02s8y8pZyN3u+bD1qIcqBbmhVsN+9G/+y2eE10/EZGjVrkiCUgJ9jWN9NNbt1+RHY 3AwA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:mime-version:subject:date:references:to :in-reply-to:message-id; bh=393Ru4nNcGSZ0lTqVTuY1UxOhVeRYoQCeTSLNrDeSWI=; b=olX9ryiYt39PY/H9xjpA7BB8Bovi9bbnLZA/4yfdlLvBtnpdQUPrkqoHVrUEdL524S nWOtmgtiBWPaszNlBOUB61/yeK0eBkzAbTJMy/wD/6qb4HCFW0odm5A+Ys7JHMVRMg60 Z90zicQwo7pzOaPv26fyGMXKWt1wInrvRcc7gn41/uIlay6I42jqMbiyy2cJtDsScctS fAC+c74j8jFeLuCWnmt2Hj1eckvu2cuVghrDaM0HsnB5EPqFkAVByijnmidcXByobN/q 0Lt95rolD/wV2ZbV6wVA3n90/vTt9SFPgPpOYOstrneB63Wz4n1kfFcZTvTqFVxpNXtk vWIw== X-Gm-Message-State: APzg51DO0gUrDQwvEiNYHC6oKjs9hGneqnBtd4KcuWp3uyq7QgZ3UzQt grye68ZxQqef0EqjXW4d22hCv36W/+Q= X-Google-Smtp-Source: ANB0VdaXvQK6UQIe+NAVkUZy8MgQVFgMtcbHT3nWdmLQGS/jJspFrIB9/FWzUPp3Lb+odvbwFIvY7g== X-Received: by 2002:a17:902:1ab:: with SMTP id b40-v6mr30556844plb.55.1536711813582; Tue, 11 Sep 2018 17:23:33 -0700 (PDT) Return-Path: Received: from [192.168.0.4] ([101.164.85.130]) by smtp.gmail.com with ESMTPSA id v82-v6sm28031705pfd.64.2018.09.11.17.23.31 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 11 Sep 2018 17:23:33 -0700 (PDT) Content-Type: multipart/alternative; boundary="Apple-Mail=_3211AB02-49BB-40AA-8A0E-D281C6C129A9" Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) Subject: Re: [AE] Photogrammetry an options? Date: Wed, 12 Sep 2018 10:23:28 +1000 References: To: After Effects Mail List In-Reply-To: Message-Id: X-Mailer: Apple Mail (2.3445.9.1) --Apple-Mail=_3211AB02-49BB-40AA-8A0E-D281C6C129A9 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Thanks for all your advice. I=E2=80=99ll check in with a few 3D guys = and 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 apps out there just to see what happens. > On 12 Sep 2018, at 10:09 am, David Torno = wrote: >=20 > Chris, >=20 > Photogrammetry of a car has to be shot very specifically. Even then = there is a massive amount of cleanup involved to remove noise in the = 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. >=20 > 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 = https://www.youtube.com/watch?v=3DC7vLZ0ddfSI >=20 > 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 > wrote: >>=20 >>=20 >> Hi all, >>=20 >> I=E2=80=99m doing some work on a short film with very limited = resources, and so am trying to work out how to do some FX with = effectively 0 budget. >>=20 >> There=E2=80=99s one shot where the director would like to add a car = driving past on a road. There=E2=80=99s a basic background plate but 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 = available. >>=20 >> 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 photos from all angles, I think the guy who took them intended = to build a model via photogrammetry. >>=20 >> I=E2=80=99ve never done it. I=E2=80=99m not a 3D artist. Just = wondering if anyone who has tried building a 3D model from photos can = share some advice so I know if it=E2=80=99s even an option. I see it as = a possible learning exercise, even to potentially animate the car in the = lite C4D that comes with AE. >>=20 >> Thanks in advance! >>=20 >>=20 >> -Chris >> +---End of message---+ >> To unsubscribe send any message to > --Apple-Mail=_3211AB02-49BB-40AA-8A0E-D281C6C129A9 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Thanks for all your advice.  I=E2=80=99ll check in with = a few 3D guys and 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 apps 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. Even then there is a massive = amount of cleanup involved to remove noise in the 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 some basic modeling in 3D. = Similar to this technique https://www.youtube.com/watch?v=3DC7vLZ0ddfSI

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 limited resources, and so am = trying to work out how to do some FX with effectively 0 budget.

There=E2=80=99s one shot where the director = would like to add a car driving past on a road. There=E2=80=99s a basic = background plate but 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 available.

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 photos from all = angles, I think the guy who took them intended to build a model via = photogrammetry.

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

Thanks in advance!


-Chris
+---End of message---+
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