316
General / Re: X-Ray Rontgen 3D scanner using Agisoft
« on: April 02, 2013, 12:44:01 AM »
April, April!
Karsten
Karsten
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317
General / Re: Capturing motion with one camera?
« on: March 07, 2013, 07:50:19 PM »
trzs,
in principle: Yes mirrors could be used, but you lose image resolution (two mirrors -> half resolution, ...) and you have some work by hand (masking, duplicating, ...). The simplest way is to use a beamsplitter.
Regards
Karsten
in principle: Yes mirrors could be used, but you lose image resolution (two mirrors -> half resolution, ...) and you have some work by hand (masking, duplicating, ...). The simplest way is to use a beamsplitter.
Regards
Karsten
318
General / Re: 1D, 2D or 3D camera setup?
« on: March 07, 2013, 07:42:34 PM »
Hi RalfH,
I think you get some answers to your questions in this paper "IMAGE ACQUISITION AND MODEL SELECTION FOR MULTI-VIEW STEREO" by K. Wenzel, M. Rothermel, D. Fritsch, N. Haala:
http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-5-W1/251/2013/isprsarchives-XL-5-W1-251-2013.pdf
Karsten
I think you get some answers to your questions in this paper "IMAGE ACQUISITION AND MODEL SELECTION FOR MULTI-VIEW STEREO" by K. Wenzel, M. Rothermel, D. Fritsch, N. Haala:
http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-5-W1/251/2013/isprsarchives-XL-5-W1-251-2013.pdf
Karsten
319
General / Agisoft at 3D-ARCH 2013
« on: March 06, 2013, 08:16:24 PM »
Agisoft Photoscan has discussed by some speakers at 3D-ARCH 2013 - 3D Virtual Reconstruction and Visualization of Complex Architectures 25 – 26 February 2013, Trento, Italy.
For example: http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-5-W1/73/2013/isprsarchives-XL-5-W1-73-2013.pdf
You find a list of all presentations here:
http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-5-W1/
Karsten
For example: http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-5-W1/73/2013/isprsarchives-XL-5-W1-73-2013.pdf
You find a list of all presentations here:
http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-5-W1/
Karsten
320
Feature Requests / Re: photoscan and spherical panoramic images
« on: February 24, 2013, 04:38:09 PM »
Oh, excuse me, please! I have overseen this Added support for Spherical camera model for the professional version, unfortunately i only own the standard version 
.
Regards
Karsten
.Regards
Karsten
321
Feature Requests / Re: photoscan and spherical panoramic images
« on: February 24, 2013, 04:23:34 PM »
Thanks Agisoft, that sounds very promising!!! Why is that not mentioned in the changelog?
Regards
Karsten
Regards
Karsten
322
Feature Requests / Re: manual input/edit Camera position parameters into PhotoScan?
« on: January 24, 2013, 12:12:33 AM »
Nan,
I'm not sure that I fully understand what do you mean with "But we want to use our own camera position parameters for more information." What do you mean with more information?
But isn't it possible to mark some GCPs or Coded Targets in your own coordinate system and let Photoscan do the rest?
Otherwise I think there might be an answer in http://www.agisoft.ru/forum/index.php?topic=834.msg3921#msg3921 or Alexey will help you.
Karsten
I'm not sure that I fully understand what do you mean with "But we want to use our own camera position parameters for more information." What do you mean with more information?
But isn't it possible to mark some GCPs or Coded Targets in your own coordinate system and let Photoscan do the rest?
Otherwise I think there might be an answer in http://www.agisoft.ru/forum/index.php?topic=834.msg3921#msg3921 or Alexey will help you.
Karsten
323
Feature Requests / Working with mirrors
« on: January 04, 2013, 02:08:40 PM »
Sometimes you need to photograph something where your camera doesn't fit in. Then it would be very helpful to use an optical mirror. I tried this with a pot shooted from the mouth to the mirror inside the pot and the first step "Align Photos" works as expected. The positions of the cameras look as they were shot from around the pot. In the "Build Geometry" step the colored geometry is succesfully built (see first attachment). But the third step "Build Texture" failed, because Photoscan projects the texture from the camera position to the first face and not the right one (see second attachment).
I think it would be very helpful for many users, if Photoscan could produce the right texture also.
Thank you,
Karsten
PS: If you need the data, I'd be glad to to send them to dropbox.
I think it would be very helpful for many users, if Photoscan could produce the right texture also.
Thank you,
Karsten
PS: If you need the data, I'd be glad to to send them to dropbox.
324
General / Re: Macro SfM
« on: December 28, 2012, 01:23:37 PM »
Hello Mark,
which objects do you want to photograph? Is there so little space between your objects that your lytro lightfield camera with 112 mm length won't fit?
In opposite to your lytro camera image stacks from my Canon A590IS need to be aligned because of the little sideways lens moving when I photograph image stacks with CHDK. This is an advantage of your lytro, the images should be match perfectly. Is there no output of a sharp photo from near to far in the lytro software?
1 cm macro distance with your old Ricoh CX1 is quit good, but if it is not always working
. If I were you, I would look for a comparable Canon CHDK camera and shoot with a small tripod my image stacks.
In my first answer I forgot to mention Photoacute which has a very good image alignment, noise reduction, depth of field extension and superresolution image improving.
In Helicon Focus software there is also a option for 3D object generation from image stacks, don't know how accurate that is. But because this is a standard technique in microscopy there should be other solution for this for example in ImageJ (which is free).
As you also mentioned microscopy, an old stereo photo technique in microscopy is to tilt the probe.
I hope it helps a little bit.
Karsten
which objects do you want to photograph? Is there so little space between your objects that your lytro lightfield camera with 112 mm length won't fit?
In opposite to your lytro camera image stacks from my Canon A590IS need to be aligned because of the little sideways lens moving when I photograph image stacks with CHDK. This is an advantage of your lytro, the images should be match perfectly. Is there no output of a sharp photo from near to far in the lytro software?
1 cm macro distance with your old Ricoh CX1 is quit good, but if it is not always working
. If I were you, I would look for a comparable Canon CHDK camera and shoot with a small tripod my image stacks.In my first answer I forgot to mention Photoacute which has a very good image alignment, noise reduction, depth of field extension and superresolution image improving.
In Helicon Focus software there is also a option for 3D object generation from image stacks, don't know how accurate that is. But because this is a standard technique in microscopy there should be other solution for this for example in ImageJ (which is free).
As you also mentioned microscopy, an old stereo photo technique in microscopy is to tilt the probe.
I hope it helps a little bit.
Karsten
325
Feature Requests / Align image stack
« on: December 28, 2012, 12:40:59 PM »
For makro photogrammetry it would be nice, if the implemented keypoint generator or a similarly process could be used to align image stacks for expanding the depth of field.
Aligned image stacks are also useful for generating HDR images inside of Photscan and use them and they can be used for superresolution images ore noise reduction ore both.
Karsten
Aligned image stacks are also useful for generating HDR images inside of Photscan and use them and they can be used for superresolution images ore noise reduction ore both.
Karsten
326
General / Re: Calibrating Meshes
« on: December 28, 2012, 01:05:58 AM »
Hello Scott,
you can do it in Meshlab as well:
1. Load your mesh in Meshlab
2. Measure a well known distance in your mesh with the measure tool (measuring tape - symbol). You get your distance in the model system.
3. Calculate the scale (known distance divided by measured distance)
4. In Meshlab go to filters "Normales, Curvatures and Orientation" then "Transform: Scale"
5. Put in your scale in the fields for Y, X and Z hit "Apply" and "Close"
6. Save your scaled mesh
Cheers,
Karsten
you can do it in Meshlab as well:
1. Load your mesh in Meshlab
2. Measure a well known distance in your mesh with the measure tool (measuring tape - symbol). You get your distance in the model system.
3. Calculate the scale (known distance divided by measured distance)
4. In Meshlab go to filters "Normales, Curvatures and Orientation" then "Transform: Scale"
5. Put in your scale in the fields for Y, X and Z hit "Apply" and "Close"
6. Save your scaled mesh
Cheers,
Karsten
327
General / Re: Macro SfM
« on: December 23, 2012, 12:47:11 AM »
Hello Mark,
I have done some christmas makro work 2 years ago with my point-and-shoot-camera Canon A590is (look at the attachment).
The tiny sensor of a point-and-shoot-camera has as advantage a much bigger depth of field. You know the bigger the sensor the smaller the depth of field. Often point-and-shoot-cameras have a very good makro modus too - for example from 1 to 5 cm distance.
I have read in this forum that some people used succesful focus stacking (Enfuse, Tufuse or Helicon Focus). And you can shoot a focus series with this little Canon point-and-shoot-cameras if they enabling CHDK or SDM in an automatic way in the field.
Cheers,
Karsten
I have done some christmas makro work 2 years ago with my point-and-shoot-camera Canon A590is (look at the attachment).
The tiny sensor of a point-and-shoot-camera has as advantage a much bigger depth of field. You know the bigger the sensor the smaller the depth of field. Often point-and-shoot-cameras have a very good makro modus too - for example from 1 to 5 cm distance.
I have read in this forum that some people used succesful focus stacking (Enfuse, Tufuse or Helicon Focus). And you can shoot a focus series with this little Canon point-and-shoot-cameras if they enabling CHDK or SDM in an automatic way in the field.
Cheers,
Karsten
328
General / Re: INTERGEO exhibition in Germany
« on: October 12, 2012, 11:34:31 AM »
Unfortunately I have not a camera with me (as I normally allways do) but it looks simular to that rig by "infinity" but smaller 
.
Cheers Karsten
.Cheers Karsten
329
General / Re: INTERGEO exhibition in Germany
« on: October 11, 2012, 09:04:54 PM »
Yesterday I visited Agisoft too. At theirs exhibition stand, they make a 120°-model of your face with 8(?) cameras shooting simultaneously, if you want to. Also some nice developments are in their pipeline, net computing and as allways speed improvements.
Yes, and I have also seen many Agisoft projects on other exhibition stands, especially on those using UAVs and there are many various types of them at this exhibition.
Unfortunately i haven't meet you wishgranter
Cheers Karsten
Yes, and I have also seen many Agisoft projects on other exhibition stands, especially on those using UAVs and there are many various types of them at this exhibition.
Unfortunately i haven't meet you wishgranter
Cheers Karsten
330
General / Re: Agisoft PhotoScan 0.9.0 pre-release
« on: October 11, 2012, 08:45:59 PM »
New released version 0.9 since yesterday at normal download.
Thank You Agisoft!
Karsten
Thank You Agisoft!
Karsten
