RangeVision DIY - my rig

Write here about construction, ideas, equipment, tips n tricks etc. related to structured light scanning
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mading
Posts: 222
Joined: 31 Jan 2017, 13:09

RangeVision DIY - my rig

Post by mading »

Hi there,
I start my post about the Rangevision DIY with a cheap and simple solution for stereo system with cameras with fixed angle, that can be used also in Flexscan or HP.
It's an Arca Style clamp, you can find in Aliexpress:
https://it.aliexpress.com/item/40004059 ... 4c4d4vsxP1
I printed a 2D view from the Daheng step file in common paper, and taped it to the clamps as a hole guide.
A few holes with a Pilar drill, and common M3*12 screws.

I had several issue with (more expensive) Arca style pan-head: very difficult to block at a desidered angle.
Good for taking pictures, not suitable for a rigid scanning rig.

Hopefully in the next week I will share the rest of the rig (as soon as I finish it)
Attachments
photo_2021-02-10_13-24-16.jpg
photo_2021-02-10_13-24-17.jpg
HP 3D scan, Acer K132, LG PF50, 2x DMK23UX236, 2xComputar M1214, David Calibration panels, Melamine panels, DIY rotary table. RangeVision DIY: 2x DahengMer630, 2X12 and 2X16 mm 5Mp ZK lenses, RV turntable
pottersfriend
Posts: 13
Joined: 19 Jan 2017, 17:36

Re: RangeVision DIY - my rig

Post by pottersfriend »

I've been looking at those but always thought they were too expensive to give it a try. I haven't ordered anything from Aliexpress before. Might have to try Aliexpress for that price. Looking forward to what you come up with. Did you also buy the rail from Aliexpress as well?
IS DFK-37BUX178 (2x) w/16mm, Dell M110, LG PF1500, HP3DS, & FS3D
mading
Posts: 222
Joined: 31 Jan 2017, 13:09

Re: RangeVision DIY - my rig

Post by mading »

pottersfriend wrote: 10 Feb 2021, 21:27 I've been looking at those but always thought they were too expensive to give it a try. I haven't ordered anything from Aliexpress before. Might have to try Aliexpress for that price. Looking forward to what you come up with. Did you also buy the rail from Aliexpress as well?
Hi there, I think I bought the Arca pan head branded "Haoge" and rail at an ebay shop in 2018 or before:
https://www.ebay.it/usr/twinklefoto
Items are still listed, even though the shop looks empty.
I DON'T suggest their pan-head for scanning.

I think any decent rail will do its job. Mine is 40 cm, the longest I could find. That's probably not enough for large FOV.
HP 3D scan, Acer K132, LG PF50, 2x DMK23UX236, 2xComputar M1214, David Calibration panels, Melamine panels, DIY rotary table. RangeVision DIY: 2x DahengMer630, 2X12 and 2X16 mm 5Mp ZK lenses, RV turntable
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OBNRacerMan
Posts: 278
Joined: 12 Aug 2019, 09:46
Location: Obninsk, Russia

Re: RangeVision DIY - my rig

Post by OBNRacerMan »

If you look at the recommended distances, then for the largest Rangevision DIY table (zone 1), then 40 cm of rail is more than enough (in any case, if the object is too large, you will need to scan in parts and, preferably, using markers)
Recommended distances between cameras and distance to tables
Recommended distances between cameras and distance to tables
Soft: RangeVision DIY, Calibration panel/Rotary tables - RangeVision, Prj: Byintek UFO R9, Cam: Daheng Mercury MER-630-60U3M-L (USB3.0, monochrome) x2, Obj: ZLKC HM1628MP10 (F2.8, 10Mp, 16mm) x2 & Azure 3518M3M (F1.8, 3Mp, 35mm).
mading
Posts: 222
Joined: 31 Jan 2017, 13:09

Re: RangeVision DIY - my rig

Post by mading »

Don't laugh.
Only now I realized I always looked at this graph upside down...
That's good to know. I am not going to scan cars for now.
HP 3D scan, Acer K132, LG PF50, 2x DMK23UX236, 2xComputar M1214, David Calibration panels, Melamine panels, DIY rotary table. RangeVision DIY: 2x DahengMer630, 2X12 and 2X16 mm 5Mp ZK lenses, RV turntable
mading
Posts: 222
Joined: 31 Jan 2017, 13:09

Re: RangeVision DIY - my rig

Post by mading »

Today I tried scanning a very dark (and bit reflective) ebony chinrest with Rangevision.
With long exposition time and double exposure it's possible to get most of the data from the object.
2021-02-18 12.15.04.jpg
Automatic turntable works wonderfully.
Coming from HP3D+AutoIT+Arduino makes you appreciate these things even more.
Alignment is made during the scan, that makes all the process automatic.
Immagine 2021-02-18 131302.jpg
Immagine 2021-02-18 131245.jpg
Only a final registration is needed, but it doesn't take not a long time (a few minutes).

Projector: the low-brightness LG PF50Ks. moving to the LG PF1500 could speed up.

I tried the blue light option with filters, but did not have the time to properly set-up the thing.
HP 3D scan, Acer K132, LG PF50, 2x DMK23UX236, 2xComputar M1214, David Calibration panels, Melamine panels, DIY rotary table. RangeVision DIY: 2x DahengMer630, 2X12 and 2X16 mm 5Mp ZK lenses, RV turntable
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