Projectors... and Projector Mods.

Discuss about cameras, projectors, calibration panels, turntables etc.
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erapip
Posts: 49
Joined: 16 Dec 2016, 07:16

Re: Projectors... and Projector Mods.

Post by erapip » 01 Feb 2018, 15:45

bigbomber wrote:
31 Jan 2018, 20:56
Hi
Friends, can you tell me how much is RMS Error value for you after calibration?
in setting/service ==> check "Show Debug Console".
see following photo how to find it.
Capture.JPG
What does it mean? How should it be?
Mine was 1.1

bigbomber
Posts: 83
Joined: 14 Dec 2017, 18:08

Re: Projectors... and Projector Mods.

Post by bigbomber » 01 Feb 2018, 16:51

erapip wrote: What does it mean? How should it be?
Mine was 1.1
1.1 is a big value of error. Are you sure?
As I know in a perfect calibration process it must be near to zero.
It is interesting for me how you can get good result by your scanner.
Can you double check the RMS Error and check alignment quality?

erapip
Posts: 49
Joined: 16 Dec 2016, 07:16

Re: Projectors... and Projector Mods.

Post by erapip » 01 Feb 2018, 19:14

[Qquote=bigbomber post_id=1090 time=1517503901 user_id=164]
erapip wrote: What does it mean? How should it be?
Mine was 1.1
1.1 is a big value of error. Are you sure?
As I know in a perfect calibration process it must be near to zero.
It is interesting for me how you can get good result by your scanner.
Can you double check the RMS Error and check alignment quality?
[/quote]
Yes if i find time tomorrow ;)
Thnx

erapip
Posts: 49
Joined: 16 Dec 2016, 07:16

Re: Projectors... and Projector Mods.

Post by erapip » 02 Feb 2018, 10:54

Sorry my mistake it was 0.11
I try to optimize the setup and arrive to 0.08
What do you think that afect these values?
Thanks

bigbomber
Posts: 83
Joined: 14 Dec 2017, 18:08

Re: Projectors... and Projector Mods.

Post by bigbomber » 02 Feb 2018, 17:13

erapip wrote:
02 Feb 2018, 10:54
Sorry my mistake it was 0.11
I try to optimize the setup and arrive to 0.08
What do you think that afect these values?
Thanks
RMS Error shows how well your calib panel is made or how well your camera can read your calib panel.
0.1 is a good value.
Can i know if you get this value with Nikon or using Industrial camera?
As i remember you have IDS cams. Why do you do your scans using Nikon?

erapip
Posts: 49
Joined: 16 Dec 2016, 07:16

Re: Projectors... and Projector Mods.

Post by erapip » 02 Feb 2018, 19:42

bigbomber wrote:
02 Feb 2018, 17:13
erapip wrote:
02 Feb 2018, 10:54
Sorry my mistake it was 0.11
I try to optimize the setup and arrive to 0.08
What do you think that afect these values?
Thanks
RMS Error shows how well your calib panel is made or how well your camera can read your calib panel.
0.1 is a good value.
Can i know if you get this value with Nikon or using Industrial camera?
As i remember you have IDS cams. Why do you do your scans using Nikon?
Yes it is with NIKON. IDS is veri slow on datta capture. With Nikon it goes to 1080p if i remember right. If is necesary i can try with IDS just to compare. I think my projector is not OK for scanning. Can you suggest one model?
Why do you use version 4 of David and not 5?

lovebay1
Posts: 8
Joined: 23 Jan 2018, 17:03

Re: Projectors... and Projector Mods.

Post by lovebay1 » 02 Feb 2018, 20:10

I think this is very good...I'm surpised :)
Senza-titolo-1.jpg

bigbomber
Posts: 83
Joined: 14 Dec 2017, 18:08

Re: Projectors... and Projector Mods.

Post by bigbomber » 02 Feb 2018, 20:47

erapip wrote:
02 Feb 2018, 19:42
[quote=bigbomber post_id=1093 time=1517591628
Yes it is with NIKON. IDS is veri slow on datta capture. With Nikon it goes to 1080p if i remember right. If is necesary i can try with IDS just to compare. I think my projector is not OK for scanning. Can you suggest one model?
Why do you use version 4 of David and not 5?
Thanks for reply.
About projector, I don't know a suitable one. All I know need modifications. I'm developing an application to solve the problem on software side.
About david v4. I have its SDK. For developing my app I use it. But the final version works for all HP versions.
what is the resolution of your IDS camera? Can you get well alignment using them as well as Nikon?
Erapip can you take a photo of your calib panel by a high quality camera (dslr if possible). I want to check it.
But resolution should not exceed 6MPixel.
The photo should be like when you want calibrate your scanner. Calib panel fill photo area. And in enough light. Projector is not needed.
Thanks for your help.

bigbomber
Posts: 83
Joined: 14 Dec 2017, 18:08

Re: Projectors... and Projector Mods.

Post by bigbomber » 02 Feb 2018, 20:50

lovebay1 wrote:
02 Feb 2018, 20:10
I think this is very good...I'm surpised :)
Senza-titolo-1.jpg
Not correct. rms error you see is the projector error.
Look at my sent photo where I was looking for.

mading
Posts: 130
Joined: 31 Jan 2017, 13:09

Re: Projectors... and Projector Mods.

Post by mading » 02 Feb 2018, 21:37

"Erapip can you take a photo of your calib panel by a high quality camera (dslr if possible). I want to check it.
But resolution should not exceed 6MPixel."

Hi BigBomber,
I would like you to check my 220 mm panel. I'll appreciate.
Is the same panel I used in the second test I posted in our previous discussion. I double checked it and it does not seems so bad in terms of dot precision.
I'm waiting for some "Arca style" stuff in order to made my setup look more professional.
I hope results will improve too. :-)
Attachments
IMG_2662_1.jpg
HP 3D scan, Acer K132, LG PF50, 2x DMK23UX236, 2xComputar M1214, David Calibration panels, Melamine panels, DIY rotary table

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