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| Calibration pattern http://www.diy3dscan.com/viewtopic.php?f=33&t=225 |
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| Author: | bkubicek [ Wed Dec 04, 2013 11:56 am ] |
| Post subject: | Calibration pattern |
Hi! I don't own a sls scanning setup yet, but try to read into to it to estimate the usability. Whats the most practical approach to have a david calibration pattern for full size human objects? Is there any way to calibrate with a smaller calibration pattern and then going to longer distance? Whats the actual effect if the calibration is imprecise? |
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| Author: | virtumake [ Wed Dec 04, 2013 5:26 pm ] |
| Post subject: | Re: Calibration pattern |
Hi Bernhard! You can calibrate David for a specific object size. The calibration pattern should have about the size of the object. However, you can scan several smaller parts of a big object and align the scans in the David Laserscanner software. People are relative difficult to scan with David, because they tend to move a little during the scanning process and this effect makes it hard to get a consistent 3d model. Therefore you should try to scan as fast as possible. This requires a big calibration tool for you David setup (Perhaps as big as the whole person?). I think it is easier to scan people with Kinect, or Asus Xtion. David is perfect for getting high detailed scans of static objects. If you like, you could even combine Kinect scans with David scans in Meshlab or Artec Studio. Best, |
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| Author: | ferdinandcook [ Fri Jan 10, 2014 6:19 am ] |
| Post subject: | Re: Calibration pattern |
I have read some 3D printing that aims to deliver human organs. Scientists are on their way to 3d printing filaments functioning as real human organs. Through this 3D printing technology, it is about to create mini human-organ systems that are able to response to drugs. For now, this is the most relevant medical device needed for organs transplant. |
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| Author: | Toffer [ Sun Jan 19, 2014 2:59 am ] |
| Post subject: | Re: Calibration pattern |
Don't waste your time with David to scan people. I've tried. If you make a small calib panel and try to scan outside of it, you lose the optics. It bends and is not worth aligning. Scanning people with Kinect, etc works better, but you need a very good GPU (gaming card). The only way I know to get a quick human scan is a system like this... http://ir-ltd.net/ Very expensive. Photogrammetry, methinks. I would love to know if anybody has had experience using 123d catch to get a good person scan by using multiple cams at once. |
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