3D Handheld Scanner
Mr.3d wrote 04/05/2020 at 14:28 • 0 pointsIs there anyone who can give information for 3D Handheld Scanner? Where should I start? What should I do?
Is there anyone who can give information for 3D Handheld Scanner? Where should I start? What should I do?
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Just found the App "Trnio" for Iphone
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Out of the top of my head there are several techniques; optical, acoustical and data science.
You can project a laser line and see how it is distorted from this you can determine the 3D surface. You can also project a dot pattern with a diffractive optical element or some lasers generate dot patterns. From the distortion of the dot pattern you then determine the shape.
You can look at the object from two positions and determine the 3D shape. This is how your eyes work. You can project a pattern with a beamer and look at this distorted pattern by another camera and use Opencv.
There are even non-optical techniques like using acoustic waves although these typically have lower resolution.
Besides this you can also use machine learning or more data science techniques. They can create a 3D estimate of the object from a single picture.
Outside this there are for sure more techniques you can use.
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Thank you very much for your reply..How can I process multiple sensor data for the clearest image?maybe ultrasonic sensor, lidar,lasers, cameras,mini projection.Wich software should I use?
https://www.creaform3d.com/en/handheld-portable-3d-scanner-goscan-3d
I want to make a diy version of it...because this is so expensive.
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I looked at it. It is a nice device and seems to project lines and determine the form from the distortion of these lines using camera images. I guess they use a galvo or mirror drum to move the laser. And focus the laser in the other direction so it creates a line. They use a camera to detect the lines and GPU or CPU to translate the images to structure data. You could use OpenCV for image analysis. You can use uEye or Basler cameras to detect the lines. There are open source alternatives like openmv but they typically have lower quality cmos chips. The chips are proprietary anyways.
Most likely the device is patented. If you can develop it within 1.5 years with a team of five people you are fast. I don't know if the device is expensive but developing definitely is.
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Thank you very much for your reply...I want to do this, I need a team to develop the device and no one around me. where can i find a team?
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Several options; join a local hacklab, pitch your idea in a business incubator, do a meetup, find an angel on angel list ... still getting a team is hard, especially when your idea is still immature...
You could also look up the patents; https://patentimages.storage.googleapis.com/65/74/57/565e4896022d32/US8032327.pdf do a virtual simulation. Claim one of this patent is long...
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start with the YScanner: https://www.makerfabs.com/yscanner-3d-scanner.html?search=scanner
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Photogrammetry with a handheld camera? See Prusa videos on photogrammetry for more clues on how to do it, if it sounds like a good fit for your needs.
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