Search found 84 matches

by avogra
07 Apr 2017, 11:42
Forum: Hardware/Accessoires
Topic: Monochrome Camera
Replies: 2
Views: 4286

Re: Monochrome Camera

I think it is not only sharpness but also sensitivity. If you put a color filter in front of every pixel, i suppose that the light intensity that reaches the pixels is 1/3 at most, maybe even less. And sharpness has to be lower as color and mono use the same sensor with the same amount of pixels. Fo...
by avogra
30 Mar 2017, 06:42
Forum: Structured light scanning
Topic: which lens is best for use with K132+ and 1" camera?
Replies: 10
Views: 12657

Re: which lens is best for use with K132+ and 1" camera?

This could be the single pixels of the K132. The DMD-Chip in the projector has its pixelplane rotated by 45°, everyone calls it diamond-shaped pixels. Maybe with the 50mm lens you get enough magnification to discern them? or it is some kind of interference?
by avogra
28 Mar 2017, 09:19
Forum: Structured light scanning
Topic: which lens is best for use with K132+ and 1" camera?
Replies: 10
Views: 12657

Re: which lens is best for use with K132+ and 1" camera?

As far as I know, HP/David still use a 12mm lens with the 23UX236. The sensor is a sony IMX236, which has a diagonal of 6,4mm. Your 23UX174 has a diagonal of 13,4mm, a bit more than twice. For the same field you view as the sls-3 camera, you would need a ~24mm lens. For the Acer K132, I found 12mm o...
by avogra
21 Mar 2017, 19:26
Forum: Working with scans
Topic: AR Sandbox
Replies: 4
Views: 12001

Re: AR Sandbox

mmh, 16 and 18 is a critical age. you could certainly leave me in this box for an hour without second thought ;-)
by avogra
21 Mar 2017, 06:38
Forum: Working with scans
Topic: AR Sandbox
Replies: 4
Views: 12001

Re: AR Sandbox

Haha, great! This is a super cool application :-) Would love to dig around too :-)
by avogra
21 Mar 2017, 00:35
Forum: Structured light scanning
Topic: what is the advantage of 2nd cam in David?
Replies: 12
Views: 15573

Re: what is the advantage of 2nd cam in David?

I have to admit that I hardly used my scanner since switching to proper industrial cameras. Still busy with to many other projects and I want to change my setup further. The classical faith of hobby projects :cry: You can always add a second camera though, so I would start out with a single camera s...
by avogra
19 Mar 2017, 23:02
Forum: Structured light scanning
Topic: david users - lets meet!
Replies: 1
Views: 3243

Re: david users - lets meet!

Sounds great, but i'm not exactly in the north of germany :-/
by avogra
18 Mar 2017, 09:22
Forum: Structured light scanning
Topic: Projecting an SLS system: Scanning precision
Replies: 53
Views: 55836

Re: Projecting an SLS system: Scanning precision

Thanks again to all for your precious support. I'm going to start from the basic setup: ACER k132-135, dmk 23ux236+12mm 1.2 Cosmicar-Pentax. If somebody has a suggestion for red-IR line laser, I'll probably give a chance also to laser scanning. Best wishes to all! I would rather go for a 10mm lens....
by avogra
16 Mar 2017, 12:20
Forum: Structured light scanning
Topic: Projecting an SLS system: Scanning precision
Replies: 53
Views: 55836

Re: Projecting an SLS system: Scanning precision

I just looked up, what the stuff ist called. It is Cyclododecane. I think it is possible, that it has no effect on the varnish. From what I read, it is a solid powder that evaporates into gaseous form after some time. Wikipedia says, it is used to conserve sensitive archeological objects temporarily...
by avogra
16 Mar 2017, 07:11
Forum: Structured light scanning
Topic: Projecting an SLS system: Scanning precision
Replies: 53
Views: 55836

Re: Projecting an SLS system: Scanning precision

There is also this spray, they use to detect leaks, which evaporates after some hours without any residue. I haven't used it myself though.