Messages

1

General / Re: Reimporting Mesh

« on: February 25, 2014, 05:11:03 PM »

wonderful thank you!

2

General / Reimporting Mesh

« on: February 25, 2014, 01:36:00 AM »

So I have just attempted to clean my mesh in zbrush and reimport the mesh back into agisoft for retexturing, however my mesh has moved.  Not a lot, just a little, but enough that the texture isn't right.  Is there a way to get it in the same spot, or a way to ensure I don't move it in zbrush?

3

General / Re: Importing masks

« on: February 14, 2014, 07:18:04 PM »

thanks!

4

General / Importing masks

« on: February 13, 2014, 06:21:34 PM »

Hi everyone, I am currently trying to figure out how to import my masked out images that are saved as psds

I saved them all as PNGs and upon bringing them into photoscan they come in with a white background.

Can i export the masks for each image in photoshop, then import mask in photoscan?

How can I bring these masked images in without a background easily?

I have tried the mask from background option and it works pretty well, but I want to be more precise and the tools in photoscan can be annoying.

Thanks!

5

General / Fixing meshes and retexturing

« on: February 04, 2014, 10:52:15 PM »

Hey everyone I'm just starting to get some pretty decent results doing full body scans and I'm curious as to how everyone cleans up their models, if at all.  I am looking to smooth out unwanted bumps along the ears and nose and smooth other surfaces that came out bumpy in the mesh.  Also, once you do smooth and fix parts of your mesh, how do you go about re-applying the texture to the new mesh?

I have access to z-brush and I think that may be the answer as to how to fix the mesh, but I have never used it and would love some insight on the workflow between z-brush and photoscan.

6

Face and Body Scanning / Compensating for clothing without much texture

« on: February 02, 2014, 07:27:14 PM »

So I have done many full body scans now, and shooting people in suits and dresses tend to come out very poorly, sometimes bare legs come out pretty bad, if at all too.  Now I understand that shooting stuff with a lot of texture is better as the program can find more points because of that.  My question is if there is a way around this?  Can I put something on my turntable or something to help find more points without disrupting the clothing?

I have also been wondering if since my cameras aren't moving, I can somehow save the camera alignment or location from one set of photos and apply it to multiple sets of photos.  If so, would this help with my nontextured clothing issue at all or not really?

Thanks!

7

Face and Body Scanning / Re: Best Positioning of cameras?

« on: January 31, 2014, 12:14:33 AM »

Well I currently have all 5 cameras vertically positioned.  Would it be best to keep my lower cameras in a landscape orientation?  The resolution of my models is not turning out as good as I would like, or have gotten before sometimes.  thanks for your responses, I'm learning so much everyday!

rick

8

General / Makerbot Printing

« on: January 30, 2014, 02:11:52 AM »

I am currently trying to figure out how to print my full body scans with a makerbot replicator 2, however I can't seem to get it started right, it messes up the feet thus sabotaging the print from the beginning.  Any tips on how to align models on the platform, or settings to make the print go smoothly?  Thanks!

9

General / Best IPAD app for 3d model viewing?

« on: January 30, 2014, 02:06:41 AM »

I am looking to load my .obj models of full body scans to my IPAD and have found that meshlab works technically, but the aesthetics are fairly poor and not something I would like to show other people.  Are there any recommended apps for ipads for 3d model viewing?  Thanks!

10

Face and Body Scanning / Best Positioning of cameras?

« on: January 28, 2014, 01:56:05 AM »

I'm fairly new to photoscan and I've learned alot about the program very quickly, I have five cameras pointed at a turntable in an arc-ing manner, but feel like I need to pull the upper cameras back further, and lose the arc as it doesn't seem to help make better scans. I have attached my most recent scan with the cameras pulled back a little, but I'm thinking they should almost be in a vertical line straight up and down.  I have a lot of overlap on my top 3 cameras, however I want the best face scans I can get.  Is it good or bad to have lots of overlap on the upper body?

Any advice on the best camera placement would be great!  thank you

11

Feature Requests / Shortcut Keys

« on: January 25, 2014, 08:01:57 PM »

I have been unable to find any shortcut keys, and find it really annoying switching between tools when editing masks, point clouds, etc.  Are they shortcuts I'm missing?  If not I think they should definitely be added.  Like the delete key for removing your selected points when cleaning up the point cloud.

Thanks!

12

Face and Body Scanning / Re: Inconsistencies and poor facial reconstruction

« on: January 24, 2014, 08:33:02 PM »

So I am using 5 canon 5D mark II cameras, and I have moved my turntable back a little bit so my rig doesn't arc over the head like i had it.  I also moved the top 2 cameras back a little bit as well, and have gotten much more improved results.  The face still has some issues.  mostly that the resolution is very low compared to previous attempts.  I have also zoomed in to compensate for moving the turntable, perhaps I need to do facial scans separately like you mentioned admir.

Could you explain the workflow a bit on how to shoot a full body scan as a reference, then combine separate leg, torso, and head scans using the full body as a reference?

attached is a screenshot of the camera positioning now

13

Face and Body Scanning / Re: Inconsistencies and poor facial reconstruction

« on: January 22, 2014, 05:26:20 PM »

Hi,

Are you masking your shoots, with a sort of a greenbox setup ? Also the position of cameras (stereo pairs, distance about 30cm to 40cm) could help, and a constant light, ( min. two flashes).

Regards, Andreas fabberlounge.com

Yes I am shooting around 120 images on a white seamless backdrop, and shooting a full round of blank images after to use as a mask using the "from backgrond" option.  I am using 4 flashes, 2 in front both about 45 degrees from the camera rig, same power output on both, large softboxes.  And two in back coming through a large white silk that I am using to blow out the backdrop for easy masking.  I am also aware and careful not to let this light bleed through onto my subject.  The auto masking is doing a great job so far from what I've seen

Have you checked sharpnes of images ? Could be head is out of focus. Also clothes worn by subject could be to uniform for photoscan to match points (look point cloud noise in upper body in your first scan compared to jeans).

Admir

Yes My images are quite sharp.  I'm shooting at f/11, and I could power up my lights easily and go to f/16 or higher, and I'm setting the focus manually before each spin (cameras don't move, subject rotates on turntable).  Now for the clothes being worn I have shot many different styles of clothing, and stuff with more patterns etc. has come out better, but I would like to be able to shoot suits, etc.  and not be completely limited, any way to get around this?

This won't help alignment, but I would try and place the top camera slightly lower, so that it would capture more of the face, (should be possible while still capturing enough of the top of the head.)

Currently the top camera is basically rotating in place, and when photos are too close together it can give problems with accuracy on the surface (because the difference in camera position is too small for Photoscan to make a meaningful calculation on the surface).

I have wondered if the top camera position could be better since it is shooting straight down on the subject.  However in order to do this i would have to back up my turntable further away from my rig, will this be mess up anything with my setup?  I can zoom in much further with each lens to compensate I figure.

Thanks for the responses and help!

Rick

14

Face and Body Scanning / Inconsistencies and poor facial reconstruction

« on: January 22, 2014, 03:56:25 AM »

So I am using a 5 camera turntable setup and I am attempting to make full body scans, however the camera alignment is very inconsistent, and on the best ones the face tends to be partially ripped off, or lumpy.  I have attached an example of a great camera alignment and a typical poor camera alignment.  Is there a way to achieve more consistent results regarding camera alignment?  Also what are some tips for fixing the face?  Lastly, how can areas like behind the ear, and behind the hands come out better?  The lighting is fairly even, but since i'm using a turntable some frames may produce shadows behind the ears, under the hands, etc, while other frames don't.  Thank you all!!

(the good camera alignment is the one with the dome -like look, the poor one has cameras scattered all around)

15

General / Re: Same settings, todays renders came out totally pixellated!

« on: January 18, 2014, 12:54:14 AM »

Here is a screenshot of a render from yesterday