here is an example of a scanner: http://freelss.org/
https://en.wikipedia.org/wiki/Comparison_of_photogrammetry_software.Of the 24, 3 are web based.
Web based systems do not require us to have software or a high powered computer. We just supply the photographs.
The trade off is the time and bandwidth required to upload the required number of high resolution pictures, and the complete lack of control over the workflow.
here is one example:
http://www.arc3d.be/ Free web powered converter.
Here is the 3DF Zephyr. A standalone, non web based system.
The generally suggested hardware specification to run such software is:
i7, 8G min, 16G preferred memory and a CUDA capable graphics card. Depending on the software, CUDA is not always required, but slows things down if not available.
I am sure several of us have have capable hardware to test the various software, and Tony has kindly offered to loan a suitable machine to the club.
I would be interested in knowing how long such a machine would take to do the job.
Quote from ARC3D cloud based system mention above:
I have seen everything from a smartphone to a high end SLR suggested and it seems like one camera is good enough to get the job done. Multiple cameras do not seem to be required. Several members probably have high quality cameras.
In summary, we have everything we need to start testing the various options.
Some articles describe pipeline style workflows, where defects/holes in the mesh can be identified, and extra pictures of the area can be taken and added to correct the problem.
But maybe we will be looking for “pictures in, 3D printer file out” with no intervention from the user.
Here is a good article describing the different workflows.
Written by Dr. P.L. Falkingham who wrote this white paper in 2012;
http://palaeo-electronica.org/content/issue1-2012technical-articles/92-3d-photogrammetryDr. Falkingham says this about Agisoft Photoscan, one of the two suggestions Olly picked out in his first email.
“This program has become something of a standard among colleagues who use photogrammetry, and for good reason. At $59 for the educational standard version, it’s a bargain, and it’s easy to use interface means anyone can use it. “
Next is an open source pi laser scanning kit. Similar in concept to what we want to attempt.
FreeLSS is a free as in open source, open hardware, and open electronic design 3D printable turn table laser scanning platform based on the Raspberry Pi.
Point cloud export
Triangle mesh export
Support for dual laser lines (right and left)
Up to 6400 samples per table revolution (with reference electronics)
5 megapixel camera sensor
Support for camera Still mode and Video code
Configurable Image Processing Settings
Ability to generate images at different stages of the image processing pipeline for debugging
Persistant storage of previous scans
Manual control of lasers and turn table
FreeLSS can generate results in the following formats.
PLY – Colored Point Cloud
XYZ – Comma Delimited 3D Point Cloud
STL – 3D Triangle Mesh
Price: Kinect (varies) ReconstructME (Free)
Technology: RGB camera, depth sensor
This is about as DIY as it gets when it comes to building a low-cost 3D scanner. Thankfully Microsoft has released a peripheral that is really an extremely high-powered depth sensor and RGB camera, and left it open enough to be used for other applications. In this case, pairing an Xbox Kinect (You can easily find them on eBay) with free software like ReconstructMe is all you’ll need to 3D scan people or objects.
Pros: Inexpensive, versatile, free software
Cons: Windows only, limited resolution, uneven quality
4. BQ Ciclop 3D scanner kit – $199 USD
This open source hardware project has been released under an open source license, so all information on the mechanical design, electronics and software is available to the community to allow for continued development. The full package is roughly $199 USD. You can even download the design and 3D print it for yourself!