Search found 319 matches

by OBNRacerMan
13 Jan 2022, 18:23
Forum: Photogrammetry
Topic: photogrammetry for ditches
Replies: 2
Views: 276

Re: photogrammetry for ditches

Watch a video on phogrammetry of industrial facilities on YouTube - using aerial photography (or using drones), you can accurately calculate the volume of embankments or dug pits. Here is one example https://youtu.be/yZKathXREYU There are also a large number of programs for photogrammetry, ranging f...
by OBNRacerMan
03 Jan 2022, 21:47
Forum: Structured light scanning
Topic: Questions about RV Daheng low distortion lens for David SLS-2 projector K132
Replies: 6
Views: 364

Re: Questions about RV Daheng low distortion lens for David SLS-2 projector K132

The initial curvature of a 12mm / 10MP objective lens does not differ from a 12mm / 5MP objective - this value is only an indicator of the quality of the lenses and their maximum resolution according to a special measuring world. The very distortions introduced by the lenses are compensated (to some...
by OBNRacerMan
03 Jan 2022, 16:05
Forum: Structured light scanning
Topic: Questions about RV Daheng low distortion lens for David SLS-2 projector K132
Replies: 6
Views: 364

Re: Questions about RV Daheng low distortion lens for David SLS-2 projector K132

Unfortunately, I didn’t have any experience with a projector like yours. But for large scanning areas, the most versatile (for many scanner models) is a 12mm focal length lens. 16mm is needed for scanning small objects, and 25mm for very small objects. I am starting from the basic scope of delivery ...
by OBNRacerMan
31 Dec 2021, 17:14
Forum: Structured light scanning
Topic: FlexScan3D modified Version (perfect support for Directshow and WebCam)
Replies: 22
Views: 3048

Re: FlexScan3D modified Version (perfect support for Directshow and WebCam)

The original colors of LMI Technologies in the old days.
Color scheme KScan3D
Color scheme KScan3D
by OBNRacerMan
30 Dec 2021, 11:47
Forum: Hardware/Accessoires
Topic: Join me? Open source 3d scanning turn table software development
Replies: 5
Views: 371

Re: Join me? Open source 3d scanning turn table software development

...to make it a 2-3 axis... It seems to me that another problem when using a rotary table with two degrees of freedom will be the need to recalibrate the rotary axis after changing the angle. P.S. Yes, you can work without axis calibration, but even on objects with a strongly pronounced structure a...
by OBNRacerMan
28 Dec 2021, 21:13
Forum: Hardware/Accessoires
Topic: Join me? Open source 3d scanning turn table software development
Replies: 5
Views: 371

Re: Join me? Open source 3d scanning turn table software development

So, it seems, something similar has already happened - 3D Scanner Turntable for DAVID5 (now HP 3D Scan) by JanBastianBeck
A similar principle of operation with large restrictions on the angle of rotation of the table, which must be set in the firmware, etc.
by OBNRacerMan
27 Dec 2021, 07:12
Forum: Structured light scanning
Topic: HP 3D Scanner camera cables and USB hub?
Replies: 9
Views: 676

Re: HP 3D Scanner camera cables and USB hub?

The cameras are recognised by the HP 3D Scan Pro setup window, but no images appear in the HP 3D Scan Pro windows. And yet there are no errors in Device Manager or Devices and Printers? You can also see through the programs that were above, whether anything has changed when connected through new ca...
by OBNRacerMan
26 Dec 2021, 12:27
Forum: Structured light scanning
Topic: The biggest difference between HP and FlexScan3D?
Replies: 10
Views: 658

Re: The biggest difference between HP and FlexScan3D?

greenskynet wrote: 25 Dec 2021, 19:38 2- Russian language
RV has at least two interface languages - Russian and English
by OBNRacerMan
25 Dec 2021, 15:15
Forum: Structured light scanning
Topic: The biggest difference between HP and FlexScan3D?
Replies: 10
Views: 658

Re: The biggest difference between HP and FlexScan3D?

I will not argue about the calibration by one frame - it, of course, has its drawbacks. But it adds another problem - the accuracy of the angle between the panels used in the calibration at HP. Unfortunately, HP found some limitations on parameter settings, and the HP flat panel calibration was too ...
by OBNRacerMan
25 Dec 2021, 10:19
Forum: Structured light scanning
Topic: The biggest difference between HP and FlexScan3D?
Replies: 10
Views: 658

Re: The biggest difference between HP and FlexScan3D?

HP3DScan has one advantage (precisely because of its peculiarities of working as if two separate scanners, but at the same time "all in one") - this is the moment when it is necessary to scan relatively deep holes or slots. There you can switch to the extended mode "on the fly" a...