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Messages - EricM

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1
Hi,

Is there a way to convert agisoft lense data (fx, fy, cx, cy, K1, K2, K3, P1, P2) to the 3DE lens distortion plugin kit values?

https://www.3dequalizer.com/?site=tech_docs&id=110216_01?

It requires (for the most simple "classic" model) :
x Offset
y Offset
Quadratic
Quartic
Cuvature X
Curvature Y
Anamorphic squeeze

Originally used in the 3D equalizer matchmoving software, it is now available in Cinema 4D (3D modelling), Nuke and even After Effects.

Thanks

2
Face and Body Scanning / Re: 4D Scanning?
« on: February 16, 2013, 12:40:50 AM »
Anyone tried with the new GoPro Hero 3 ?

4K at 15fps might be ok and the price reasonable. You can also sync them with the remote (up to 50).

3
General / Re: Using FullFrame Fisheye to create 3D Model for Tunnel
« on: October 04, 2012, 11:53:11 AM »
If you find a good workflow, please let us know. I too have a full frame fisheye lens and would love to use it in tight spaces, but these papers are a bit over my head...

4
Feature Requests / Re: Animation mode
« on: November 17, 2011, 12:55:08 PM »
I concur to an "intermediate VFX version" with axis/coordinate system orientation and maybe better automation/batch processing tools when you want to use video as input and output animated meshes or just depth/disparity map images sequences as an output.

All the technology is here, but it's not really accessible.

On the other hand, I don't need the fancy orthophoto, DEM, georeferencing stuff.

5
Interesting... I'll have a shot at this...

Yet, since photoscan natively outputs a depth map, it would be great to be able to also batch output this depth sequence.

Actually, a video mode for stereoscan would be enough... :
- Select video sequence right
- Select video sequence left
- Compute disparity map and output depth map to use in After Effects, Nuke, whatever...

6
Nuke on its own cannot do that. You have to add the ocula plugin suite to get this functionality, and the plugin alone costs around 7000 Euros + price of Nuke... (which I don't have yet).

I've had a rather encouraging start by setting a couple of stereo pairs by hand and retrieving the depth maps in After effects for a sequence, but to do it wor a whole sequence is incredibly tedious.

It may be possible to do in the pro version through python scripting, but as I said I only have the standard version.

7
I'm a happy user of Photoscan Standard, but also a video fx artist and I was wondering if there was anyway to create a special version/mode of Photoscan to specially deal with stereo videos and only outputting the depthmap/disparity as another video (3D mesh would probably be overkill at that stage).

I see the math and all the building blocks are here already in Photoscan : selecting stereo pairs and creating depth maps but the workflow isn't adapted to video (25fps x 2 eyes : 50 frames per second to match/solve/retrieve by hand)

Ideally a plugin for Aftereffects and such would be great, but a nice and simple standalone app (or a special mode in photoscan) would certainly be a great step forward.

With more and more affordable 3D camcorders and bigger 3D productions, there's definitely a market for that. I know I would pay a premium for that.

Thanks for your consideration.

8
Face and Body Scanning / Re: 3D modeler
« on: June 06, 2011, 01:21:25 PM »
Here's an example.
http://imageshack.us/photo/my-images/402/headprojecttest.jpg

I shot a 180° head scan from 10 photos, shot in daylight with no makeup or polarized filter to .

The reconstruction (smooth/High/filter 20%) was exported to Zbrush as an OBJ.

In Zbrush I cleaned it up and aligned it with a head model I already had with good UV and topology and then projected the geometry onto the clean mesh.

It was my first attempt, and it did a very good job overall, except in the places where the target model had overlapping geometry (most obvious in the lip corner region). I need to fix the target model a bit, and then it should be alright.

9
Face and Body Scanning / Re: 3D modeler
« on: June 05, 2011, 11:01:04 AM »
Thanks for the answer and the picture.

That's more in line with the later results I now have, except that I'm using "smooth" reconstruction usually because I can't seem to  fill the holes in photoscan after an "exact" reconstruction (yet... ).

I'm using Zbrush to smooth the last bits and reproject the detail on a clean topology. I also noticed that reflections on the skin can really make or break the results. I'm going to invest in some light make-up to matifiy the brightest parts of the forehead and nose.

Cheers,

Eric


10
Face and Body Scanning / Re: 3D modeler
« on: June 03, 2011, 04:13:53 PM »
Hey Kegg, sorry to hijack the thread, but that's a very clean mesh that you have here... Was this straight out of Photoscan or is this already a cleaned-up version ?

My I dare to ask what setup/settings you used ? (number of photos, resolution, meshing/smoothing parameters...).

My early test, while encouraging, are nowhere as clean as yours...


11
Feature Requests / Re: Feature requests
« on: June 01, 2011, 01:51:47 PM »
May I add also, if feasible :

Ability to stop the reconstruction process (for example at the end of the depth map stage, o during mesh generation...) and be able to save the progress to resume another time without starting back from scratch ?

It would allow for heavy computations to be made across various days without having to let the computer run 24/7 in one go, with everything that could go wrong in between...

I Hope that makes sense.

12
Feature Requests / Re: Feature requests
« on: May 29, 2011, 05:57:36 PM »
I'm using the standard version and it's great but what I would like to see improved  :

- Scene axis reorientation : when the up axis is sideways etc...
- Manual volume selection reorientation...

Better "cleaning" tools :
- Feehand manual selection and point deletion at calibration and mesh stages
- Better hole filling tools : I don't really understand the current system or setting and it doesn't appear to work for me... I'd like to be able to select a zone of the mesh and fill any holes within that selection.
- "select connected" : select all the polygons connected to the one I clicked on, so that I can see what parts or the model are "floating" and delete them...

Thanks for this great software.

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