Search found 10 matches

by barryvanbakel
27 Jan 2021, 09:10
Forum: Structured light scanning
Topic: 3D scanning - high resolution for small objects
Replies: 43
Views: 7060

Re: 3D scanning - high resolution for small objects

Forgive me to ask so many questions,

Does the optical zoom mean that you can use this projector (LG PF1500) for both very small objects, and also larger subjects such as a chair?
by barryvanbakel
19 Jan 2021, 19:06
Forum: Structured light scanning
Topic: 3D scanning - high resolution for small objects
Replies: 43
Views: 7060

Re: 3D scanning - high resolution for small objects

What is the throw ration of the LG?

"My HD projector (1280 * 720) has a throw ratio of 1: 1.47 with a focusing of 100mm, AAXA projectors have a TR 1: 1.2 "
by barryvanbakel
09 Jan 2021, 19:12
Forum: Structured light scanning
Topic: 3D scanning - high resolution for small objects
Replies: 43
Views: 7060

Re: 3D scanning - high resolution for small objects

I suppose to use an enlarging lens in front of the projector could be worth trying, they are designed to provide minimal distortion. And affordable. But perhaps it is not necessary.... the coin of the first reply shows remarkable detail allready. Does anyone know if the AAXA P7 or P5 are tested in a...
by barryvanbakel
08 Jan 2021, 19:03
Forum: Structured light scanning
Topic: 3D scanning - high resolution for small objects
Replies: 43
Views: 7060

Re: 3D scanning - high resolution for small objects

I see, more distance is more DOF, and longer focal lengths needed.

Projectors with replaceable lenses are expensive > is there an option to 'stack' a lens in front of the projector lens; or, to put an attachment lens onto it, in order to get a different angle of the projector light beam?
by barryvanbakel
07 Jan 2021, 13:21
Forum: Structured light scanning
Topic: 3D scanning - high resolution for small objects
Replies: 43
Views: 7060

Re: 3D scanning - high resolution for small objects

So if I understand right; - The projector should be as close to the subject as it can still get in focus, and - The cams should have the subject as frame-filling as possible. Correct? Then, does it matter how tumid an object is? A coin is flat subject, OK, but when projecting a pattern on a semi-glo...
by barryvanbakel
06 Jan 2021, 15:06
Forum: Structured light scanning
Topic: 3D scanning - high resolution for small objects
Replies: 43
Views: 7060

Re: 3D scanning - high resolution for small objects

Thanks for your answer too, micro!
AAXA P5 and P7 look great to me. Available, quite affordable, and the smaller projection area is excellent for my small objects.
Is there a particular software which is better in macro than another? With which software do you scan?
by barryvanbakel
05 Jan 2021, 18:27
Forum: Structured light scanning
Topic: 3D scanning - high resolution for small objects
Replies: 43
Views: 7060

Re: 3D scanning - high resolution for small objects

Thanks - it looks as a clean, simple setup and with great result on macro.
What modifications needs to be made to the LG projectors to scan macro?

If you ever consider changing your gear, drop me a line. I think it is too difficult for me to build a structured light setup.

Kind regards,
Barry
by barryvanbakel
03 Jan 2021, 21:55
Forum: Structured light scanning
Topic: 3D scanning - high resolution for small objects
Replies: 43
Views: 7060

Re: 3D scanning - high resolution for small objects

Clear explanation and example, thx. So the projected area needs to be as small, and as sharp, as possible, I understand. Which projector do you now use for macro scanning? And which projector would be ideal for macro work; a pico scanner? Camera: I do a lot of macro photography and have quite a few ...
by barryvanbakel
02 Jan 2021, 19:56
Forum: Structured light scanning
Topic: 3D scanning - high resolution for small objects
Replies: 43
Views: 7060

Re: 3D scanning - high resolution for small objects

Hi, many thanks for your reply! Great to see your results. Looking at the ring and coin, I would say that is about the resolution I need. Forgive me for my very little knowledge on the scanning technique,....I have some questions. Does the type of projector matter for such macro application? Why wou...
by barryvanbakel
02 Jan 2021, 15:05
Forum: Structured light scanning
Topic: 3D scanning - high resolution for small objects
Replies: 43
Views: 7060

3D scanning - high resolution for small objects

Hi, I'm interested in 3D scanning since a while and only experimented with photogrammetry. Now I need the resolution as high as possible and am very impressed by the 'macro scanner' or https://www.mechscan.co.uk/macro-3d-scanner/ My aim is to 3D-scan small fossils, size of a small coin. Actually it ...