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General => Image Sharing => Topic started by: bigben on August 12, 2012, 05:37:35 PM

Title: Tiger elephant.
Post by: bigben on August 12, 2012, 05:37:35 PM
Been playing with Autodesk's 123D Catch recently for work.  Here's a quick test.
[attach=1]


Title: Re: Tiger elephant.
Post by: bigben on August 12, 2012, 10:55:58 PM
oooo, there's a whole herd of them out there   ;D
http://www.abc.net.au/news/2012-08-10/melbournes-cbd-overrun-by-baby-elephants/4191576 (http://www.abc.net.au/news/2012-08-10/melbournes-cbd-overrun-by-baby-elephants/4191576)
Title: Re: Tiger elephant.
Post by: masonspappy on August 13, 2012, 12:35:44 AM
Hey Bigben,
If we ever meet in person I will buy you beer!!

That app is exactly what I've been looking for.  And the timing is perfect.  I had been trying unsuccessfully  to get the David LaserScanning software to work - installed it on 2 PCs and a VM and it crashed every time - but quit trying last night.  From everything I've tested so far, the 123 Catch results are everything I need and blend perfectly with the other elements from my pipeline (see attached image).
Thanks again!!
- Cam
In the attached image Yoda is an OBJ sample pulled down from the 123 Catch website,  the cannon was created by me in Blender.
Title: Re: Tiger elephant.
Post by: bigben on August 13, 2012, 01:43:38 AM
Hi Cam

Glad you found it useful. We've had a structured light system installed at work but from my early tests I think 123D Catch can outperform them in particular circumstances.  Both approaches have there pros and cons. The photogrammetry approach is very similar to stitching panoramas in that a knowledge of how the software works and "behaves" (AND misbehaves) makes a very big difference to how successful the result is out of the box. Certainly a useful tool for getting a quick textured model of something for a mock up.
Title: Re: Tiger elephant.
Post by: Kadri on August 13, 2012, 10:23:11 PM

I didn't tried that software before because of the "cloud software" nature but your post made me curious.
I made a very basic quick and dirty animation test with an AT-AT model i have at home.
For a first try it came out better then i thought Ben.
It is fun to use at least .

Thanks Ben :)

Title: Re: Tiger elephant.
Post by: TheBadger on August 14, 2012, 02:15:32 PM
Really interesting! Could be a great way to get background fill.
Does anyone know if the quality of the model is mostly based on the quality of the photo?

It is on PC and IPad, but not mac? Thats really strange. Whats the deal?
Title: Re: Tiger elephant.
Post by: bigben on August 14, 2012, 05:51:44 PM
Quote from: TheBadger on August 14, 2012, 02:15:32 PM
Really interesting! Could be a great way to get background fill.
Does anyone know if the quality of the model is mostly based on the quality of the photo?

It is on PC and IPad, but not mac? Thats really strange. Whats the deal?


To a certain extent, yes, but there comes a point where feeding it higher resolution images just won't make much difference. There are many similarities between this and 2D stitching of panoramas in that there is a significant grey area between good and bad data. I'm running some tests to work out approaches to photographing these that will optimise the quality of the initial result. Tip 1: start with a view looking down on the object so that the top appears in every image.

The model here was made with an iPhone4. I was in a hurry and didn't lock the exposure and dound I got a much better result after using PTGui to adjust the images to the same exposure.
Title: Re: Tiger elephant.
Post by: TheBadger on August 17, 2012, 04:40:51 AM
Thanks Ben. Please keep us posted on your findings.

QuoteTip 1: start with a view looking down on the object so that the top appears in every image.

Every image meaning every angle of the top?
Title: Re: Tiger elephant.
Post by: bigben on August 22, 2012, 10:49:41 AM
Quote from: TheBadger on August 17, 2012, 04:40:51 AM
Thanks Ben. Please keep us posted on your findings.

QuoteTip 1: start with a view looking down on the object so that the top appears in every image.

Every image meaning every angle of the top?

To edit tip #1:
Start with a front on view as this sets the default orientation of the object.
Then move the camera up so that you can see the top of the model, and then move around the object so that you can see the top of the object in each shot until you get back to the front again.  Then move down and do another lap of the object.

I've been experimenting with backgrounds and a shooting strategy specifically for 123D Catch, but it should also work for Photosynth.  Had a quick look at Arc3D but it seems to have different requirements for its source images.  My latest test used a cutting board (green mat with white grid lines) to sit the model on. This seems to have provided a better reference for the 3D reconstuction and I got the model below without requiring any post editing of the model :) (the pins were used in previous tests as reference points for manual stitching but weren't required this time, 47 images in 2 rows)
Title: Re: Tiger elephant.
Post by: Oshyan on August 22, 2012, 04:56:37 PM
Impressive and very cool!

- Oshyan
Title: Re: Tiger elephant.
Post by: bigben on August 22, 2012, 05:48:34 PM
Thanks Oshyan. We were somewhat amazed ourselves when we saw it appear on screen and I was very surprised to see that the only hole/crack in the object was the base.

There's another Autodesk freebie that I know many here will enjoy.  It's unsupported, isn't promoted with all of their other 3D apps and don't ask me about UV mapping (I don't know that much about 3D modelling) but it's both very fun and very useful.
http://www.meshmixer.com/ (http://www.meshmixer.com/).  The guys who set up our 3D scanner suggested we use Meshlab to fix our models before printing them but I find this much easier to use.  Watch the videos!
Title: Re: Tiger elephant.
Post by: TheBadger on August 22, 2012, 08:39:37 PM
Thanks a lot Ben.

Just one question about your last image here. The Buddha model looks a bit "blocky". Is this a result of low render settings, or is that how the model looks? The image in the OP is to far away for me to tell.
Title: Re: Tiger elephant.
Post by: bigben on August 23, 2012, 06:14:16 AM
It's a bit blocky because it's just the standard resolution that is initially created.  Once it's created you can increase the mesh resolution after cropping. I'm just about to render a maximum resolution version of the same object.

[edit] 'tis done.  You can have a look at the files here:
http://files.digitisation.unimelb.edu.au/playpen/buddha_20120822/ (http://files.digitisation.unimelb.edu.au/playpen/buddha_20120822/)

Render : detail 0.75, AA 6. Raw OBJ export from 123D Catch (27Mb)
Title: Re: Tiger elephant.
Post by: TheBadger on August 23, 2012, 07:27:23 PM
Thanks again, Ben  8)

I put this at the top of my "to learn" list. And those other softwares you mentioned are pretty interesting too. Great share, man. Thanks  for taking the time!
Title: Re: Tiger elephant.
Post by: Upon Infinity on August 23, 2012, 08:06:48 PM
Oh my god...does this software do what I think it does???
Title: Re: Tiger elephant.
Post by: Mahnmut on August 24, 2012, 03:08:29 AM
Yes, UponInfinity, I am pretty sure it really is a software for taming and painting Elephants! Finally!
I´ve been waiting so long!
Cheers,
J
Title: Re: Tiger elephant.
Post by: bigben on August 24, 2012, 06:05:44 AM
Here's a preliminary test outdoors (FF or Chrome etc... will provide a 3D view)
http://www.123dapp.com/stl-Catch/South-lawn-carpark-entrance/795408 (http://www.123dapp.com/stl-Catch/South-lawn-carpark-entrance/795408)

It would be interesting to try and recreate this with a mix of TG (fake rocks and trees objects) and reconstructed objects.
Title: Re: Tiger elephant.
Post by: TheBadger on August 24, 2012, 07:28:21 PM
Hey Ben.

First, thats the nicest parking ramp I have ever seen.

And two; you said that you could increase the quality of the default mesh. Can you also edit it? I see in your example that you got a lot of extras in the mesh. can you open the mesh and delete that stuff out just like any mesh. Or is there anything unusual about this method?

Hopefully I will have time tonight to play with the Buddha you posted and answer my own question. But we'll see.
Title: Re: Tiger elephant.
Post by: Jo Kariboo on August 24, 2012, 10:39:35 PM
Thanks bigben for your experimentation!
Title: Re: Tiger elephant.
Post by: bigben on August 26, 2012, 06:14:37 PM
Quote from: TheBadger on August 24, 2012, 07:28:21 PM
Hey Ben.

First, thats the nicest parking ramp I have ever seen.

And two; you said that you could increase the quality of the default mesh. Can you also edit it? I see in your example that you got a lot of extras in the mesh. can you open the mesh and delete that stuff out just like any mesh. Or is there anything unusual about this method?

Hopefully I will have time tonight to play with the Buddha you posted and answer my own question. But we'll see.

1: It's the back exit, but yes it's quite nice. It has the dubious honour of being the only carpark on Victoria's heritage registry and was used in the Mad Max film. http://www.pcs.unimelb.edu.au/__data/assets/pdf_file/0003/525810/Underground_Car_Park_and_South_Lawn_CMP.pdf (http://www.pcs.unimelb.edu.au/__data/assets/pdf_file/0003/525810/Underground_Car_Park_and_South_Lawn_CMP.pdf) The significance of it to the uni means it'll be a useful project for raising the profile of our experiments.

2: You can (and should) edit the mesh in 123D Catch.

You can select and delete unwanted parts of the mesh (AFTER you get your high res mesh), or when you go to change the mesh resolution, you select only the part of the mesh you want at high res and it discards the rest.  I'd recommend watching all of the videos on the 123D Catch site as they're very informative and helpful for using the program.  The manual alignment of images is also quite nicely done.
Title: Re: Tiger elephant.
Post by: TheBadger on August 26, 2012, 06:46:47 PM
TY
Title: Re: Tiger elephant.
Post by: PabloMack on September 08, 2013, 11:15:20 AM
Quote from: bigben on August 12, 2012, 10:55:58 PM
oooo, there's a whole herd of them out there   ;D
http://www.abc.net.au/news/2012-08-10/melbournes-cbd-overrun-by-baby-elephants/4191576 (http://www.abc.net.au/news/2012-08-10/melbournes-cbd-overrun-by-baby-elephants/4191576)

Reminds me of the City of Bath in England "The City of Decorated Pigs".

https://www.google.com/search?q=City+of+Bath+%22Decorated+Pigs%22&biw=1072&bih=544&tbm=isch&tbo=u&source=univ&sa=X&ei=UJQsUprGFabL2gWHsIFQ&ved=0CD0QsAQ
Title: Re: Tiger elephant.
Post by: bobbystahr on June 06, 2014, 09:36:28 AM
Quote from: PabloMack on September 08, 2013, 11:15:20 AM
Quote from: bigben on August 12, 2012, 10:55:58 PM
oooo, there's a whole herd of them out there   ;D
http://www.abc.net.au/news/2012-08-10/melbournes-cbd-overrun-by-baby-elephants/4191576 (http://www.abc.net.au/news/2012-08-10/melbournes-cbd-overrun-by-baby-elephants/4191576)



Reminds me of the City of Bath in England "The City of Decorated Pigs".

https://www.google.com/search?q=City+of+Bath+%22Decorated+Pigs%22&biw=1072&bih=544&tbm=isch&tbo=u&source=univ&sa=X&ei=UJQsUprGFabL2gWHsIFQ&ved=0CD0QsAQ


we have polar bears here all tarted up by artists
Title: Re: Tiger elephant.
Post by: bigben on June 07, 2014, 12:44:31 AM
Quote from: bobbystahr on June 06, 2014, 09:36:28 AM
we have polar bears here all tarted up by artists

I was first thinking of artists undergoing rehab to learn how to make the most of their remaining limbs  ;)

http://www.manitobaphotos.com/bears.htm (http://www.manitobaphotos.com/bears.htm)?
Go on Bobby, you know you want to...
Title: Re: Tiger elephant.
Post by: inkydigit on June 12, 2014, 09:35:00 AM
My Hometown Bristol had:
http://www.gromitunleashed.org.uk/
:D
Title: Re: Tiger elephant.
Post by: Upon Infinity on June 12, 2014, 11:09:25 AM
In Calgary, we did:

http://rocknartgallery.blogspot.ca/2011/01/calgary-cow-parade.html

naturally.
Title: Re: Tiger elephant.
Post by: kalwalt on June 28, 2014, 02:20:59 PM
Hi to all here! I have experimented with skanect and reconstructme software using the microsft Kinect to scan a 3d model but i found very difficult to use. If you move too fast they crash and you have to remake all. Better if you scan a room, in this case it's diffficult that those crashing, but as my first idea was to use as a 3d scanner for my sculptures and i felt very bad within  those software. 123D catch is interesting i will give a try for sure and i will inform you. I found this topic very interesting @bigben, thank's for sharing it. :)
Title: Re: Tiger elephant.
Post by: bigben on June 28, 2014, 11:43:23 PM
I've tried one of the early skanects just before we got our laser scanner. It sounds promising in theory but the resolution/noise is a limiting factor for render quality scans.  Given the price of the standard version of Photoscan I think it's a pretty good option (and if you're a student or work at a school, the educational price is irresistable). 123D Catch uses Acute3D as a back end but what you get through the cloud service is a cut down version of what that software is capable of.  I've reprocessed image sets that we had taken for 123D Catch and got much cleaner meshes at much higher resolutions. Full rooms however are not a subject for which photogrammetry is often not practical.

Some other tests I've run with Photoscan:
iPhone 4S and PureShot for dRAW TIFFs: https://sketchfab.com/models/4bb8f7abd0a84a36be37a81feb9732f2 (https://sketchfab.com/models/4bb8f7abd0a84a36be37a81feb9732f2)
Armillary sphere: https://sketchfab.com/models/2c10f162922a4f34b55607b91ff3745c (https://sketchfab.com/models/2c10f162922a4f34b55607b91ff3745c) (original mesh produced was 6 million faces from 50 million points) This was challenging given the thinness of the stucture and never worked well in Catch.
Title: Re: Tiger elephant.
Post by: Dune on June 29, 2014, 02:43:29 AM
There's a Dutch shopping chain that offers 'selfies' in 3D, as an experiment. You get into a cubicle with a lot of camera's... flash, and you're printed at 30cm high. Cost you €60. I wish they would offer the 'object files' as well, for use in TG, that would be cool.
Title: Re: Tiger elephant.
Post by: bigben on June 29, 2014, 03:05:44 AM
Ask them. I have one near me (http://www.3dneoveo.com.au/products/3dcustomfigurine (http://www.3dneoveo.com.au/products/3dcustomfigurine)) and when I asked they said that they will provide the files at no extra charge and will do a scan only service for half the price of a scan and print. They'll also do a torso only scan for a bit less.
Title: Re: Tiger elephant.
Post by: Dune on June 29, 2014, 03:09:06 AM
Good idea, Ben. They're just starting, so the nearest shop is probably at the other end of the country, but I'll keep my eyes open. It'll spread, no doubt. Everyone wants a tiny self, I'd say  ;)
Title: Re: Tiger elephant.
Post by: kalwalt on June 29, 2014, 08:09:53 AM
Quote from: bigben on June 28, 2014, 11:43:23 PM
I've tried one of the early skanects just before we got our laser scanner. It sounds promising in theory but the resolution/noise is a limiting factor for render quality scans.

You are right, was a disavantage of this software, in this sense Reconstruct me has a better reconstruction alghorithm that preserve in a better way the mesh. I see th other softwares, but i think for the moment they goes out of my possibilities. i don't want to buy an educational license if i plan to use as a professional in the future ( Also because I have finished my studies a few months ago...). I will try the autodesk 123D catch to compare to the other i tested.
Title: Re: Tiger elephant.
Post by: PabloMack on May 30, 2015, 07:06:25 AM
Quote from: kalwalt on June 29, 2014, 08:09:53 AM...was a disavantage of this software, in this sense Reconstruct me has a better reconstruction alghorithm that preserve in a better way the mesh.

Anybody have practical experience with the latest Skanect Version 1.8.3? It is supposed to have improved color rendition and better stability.