Messages

76

General / Re: Turntable Requirements

« on: November 26, 2013, 11:02:35 AM »

Hi Magnus,
Our turntable is based/similar on Lazy Susan design.
Just note to Hayato, you would need the way to sync flashes and cameras so delay in shooting is minimal.

There are various solutions explained in forums.

Admir

77

General / Re: Turntable Requirements

« on: November 25, 2013, 01:37:48 PM »

Hi,
good inspiration on building your own rig is Mark Florquin's blog:http://www.markflorquin.be/blog/2013/01/full-body-scan-3d-photogrammetry-photoscan-nikon-rig-d80-d7000-d700/.

We built our own using engine from electric owen http://www.mada.cn/productsshow_en.asp?id=10 .
It is connected to turntable using bicycle inner tire to provide constant rotation without jumps.

Admir

78

Face and Body Scanning / Re: Scan Data Refinement

« on: November 24, 2013, 01:24:48 PM »

Looking good, can you share more info on process ?

Admir

79

General / Re: Turntable Requirements

« on: November 23, 2013, 01:46:57 PM »

Thnx!

Yes, with arms closer it would be less character movement, however some parts could be occluded and not scanned.

Attached are couple more examples...

Admir

80

General / Re: Turntable Requirements

« on: November 23, 2013, 11:25:17 AM »

4 cameras are possible. You need to sync external flashes to cameras and adjust shooting options on cameras. This is trickiest part as getting sharp, well lit images is key to good solution.

 I have attached 2 images examples of 4 Canon rig and turntable. Those are raw scans from PS without editing.

81

General / Re: Turntable Requirements

« on: November 22, 2013, 02:00:18 PM »

Our turntable system used 4 Canons. It rotated 38 second, each second 1 image was taken so we ended with 4x38 = 152 images + 1 empty background.

For full body scan, it is low number of cameras plus there is optic distortion and resolution issues added on top of subject slightly moving (tips of hands, head....). To compensate for that we shot fullbody (used as reference), top, legs, head, boots and arms separately and merged them together using fullbody scan as reference. As our field is real time games, results were very very good. For head, boots and immovable objects we used simple white chair with subject sitting on it or item placed on chair.

Hope it helps,

Admir

82

General / Re: Turntable Requirements

« on: November 22, 2013, 12:18:38 AM »

We have white sheet in background and it works very well. Another thing we did is to place white sheet over turntable as well. With white sheet you get nice light bounce as well, and our subjects wear darker color clothing so constrast is there . When you finish shooting your subject, remove it from turntable, shoot one photo (for each camera) with just background. You can use that image as automatic mask in PS.

There is no need for markers of any kind.

Hope it helps,
Admir

83

General / Re: Problems with Capturing data

« on: September 24, 2013, 01:44:06 PM »

We had similar problem when object is to close the curtain/wall, it would cast "shadow" on the wall. Tried moving turntable farther away from the wall ?

Also, like Harald said, could be that your flashes don't recharge fast enough or have you changed flashes output strenght ?

Admir

84

General / Re: Minimum Resolution Requirement per Camera

« on: September 12, 2013, 06:04:53 PM »

18mp is more (not much more) image resolution than 12mp and more details you can capture. We are using our custom built relay based trigger to be sure all cameras trigger in same time, as we experienced delays usign various usb and wireless shooters.

85

General / Re: Agisoft PhotoScan 1.0.0 pre-release

« on: September 12, 2013, 03:00:20 PM »

Is it possible to install the beta separately and keep the  0.9.1 installation for comparison purposes?

Good question???  I would like to have both on my computer so that I can continue to practice with V1.0 while still processing commercial jobs with V0.9, rather than having to un-install/ re-install every time.

You can install 0.91, copy it to folder like PhotoScan_0.91, uninstall (it will remove it from Photoscan folder), install 1.0 (in Photoscan default folder). You end with 2 versions in 2 folders.

Admir

86

General / Re: Minimum Resolution Requirement per Camera

« on: September 12, 2013, 10:21:41 AM »

We are using Canon EOS 1100 D (12MP) and Canon EOS 600D (18MP) for body scans.
We break scans into multi parts (head, lower body, upper body...) scaning and merge scans after.
12MP is pretty good for scans but you need proper light setup (key for good scan), good optic (as stock kits are not the greatest) and enough cameras.
However, we did tests with stock optic and good-ish studio flashes and results were good for our needs (realtime game development).

Admir

87

General / Re: Photoscan texture generation vs DOF

« on: September 04, 2013, 03:38:19 PM »

Did you try disabling blurred images when creating textures. If you disable them, PS wont use them while creating textures.

Admir

88

General / Re: Agisoft PhotoScan 1.0.0 pre-release

« on: September 04, 2013, 12:47:46 PM »

Sure, you need photos, masks and projects ?

Hello admir,

Could you please provide the dataset where we can reproduce alignment problems in 1.0.0 and good results with 0.9.1?

89

General / Re: Agisoft PhotoScan 1.0.0 pre-release

« on: September 04, 2013, 11:27:18 AM »

Hello again. I have been testing 1.0 build 1736 (x64) and getting much worse align than in 0.91 buld 1703 (x64). Both alignment processes have same settings: High, no image pair preselect, max points is 80000 and mask constrain is ON. Attached is shot from 1.0 and 0.91.

90

General / Re: Agisoft PhotoScan 1.0.0 pre-release

« on: August 31, 2013, 12:58:33 PM »

Hello, i am getting this errors in 1.0 (last build) which i dont have in 0.91 build 1703 (both 64bit).
clGetDeviceIDs failed: CL_DEVICE_NOT_FOUND
Intel(R) OpenCL: can't enumerate devices

My specs:
OpenGL Vendor: NVIDIA Corporation
OpenGL Renderer: GeForce GTX 470/PCIe/SSE2
OpenGL Version: 4.3.0
Maximum Texture Size: 16384
Quad Buffered Stereo: not enabled
ARB_vertex_buffer_object: supported
ARB_texture_non_power_of_two: supported

However, everything works well so far.

Admir