3d scanner

[quertz]

Hey guys,

considering you've got the printer setup and can capture around 30fps per sec, I would suggest to use the mirrors of the peachy and make one of them oscillate really fast (or use some other way to get the laser to draw a full line in each videoframe).

Then I would use the second mirror to slowly tilt the line to the left and right to get a distance value for a full 2D grid.
Then you can rotate the object by a step and repeat the process.

This would work similar to many other 3D scanners (eg. Kinect v1) which project a certain pattern on the object and use a camera at a certain distance to get the 3D information.
https://www.youtube.com/watch?v=fJpNHBfLfdU
This 3D animation shows how they use patterns to do the scan. Our "pattern" would be the time difference of the laser-line.



This would have the advantage that, as we will always get a full 3D-picture, the rotation steps can be a lot larger and easier to do manually.

greetings, quertz

[mike_biddell]

Hey guys,

considering you've got the printer setup and can capture around 30fps per sec, I would suggest to use the mirrors of the peachy and make one of them oscillate really fast (or use some other way to get the laser to draw a full line in each videoframe).

Then I would use the second mirror to slowly tilt the line to the left and right to get a distance value for a full 2D grid.
Then you can rotate the object by a step and repeat the process.

This would work similar to many other 3D scanners (eg. Kinect v1) which project a certain pattern on the object and use a camera at a certain distance to get the 3D information.
https://www.youtube.com/watch?v=fJpNHBfLfdU
This 3D animation shows how they use patterns to do the scan. Our "pattern" would be the time difference of the laser-line.


This would have the advantage that, as we will always get a full 3D-picture, the rotation steps can be a lot larger and easier to do manually.

greetings, quertz

Quertz..... a narrow mesh (generated by both mirrors oscillating), is an excellent idea. As a matter of passing interest, someone invented a bicycle lamp which projected a mesh onto the ground to identify potholes !!!!! A square mesh would probably suffice.