Faro Scene 2021 - Performance Issues

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TommyMaddox
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Re: Faro Scene 2021 - Performance Issues

Post by TommyMaddox »

Started using the 2021.2 version today, noticed an issue when running Onsite Compensation (scanner FW versions 6.8)

The scanner head either parks incorrectly on the horizontal alignment, or when starting the scanning stage, doesn't begin at the correct offset, opting to start in the center which means it misses half the compensation target line since the unit scans in the clockwise direction.

I now have to manually park the scanner head slightly to the left as before, to ensure full capture of the compensation pattern dot target line.

Something for you guys to sort out for 2021.3 I reckon. See attached images for the issue.

Normally I'd private message this, but I suspect I'm gonna be saving some users a headache here when they start compensating their units shortly.

EDIT: Two side notes
1. You can get excellent passing yet wildly inconsistent compensation values even if some, or NO targets are actually captured, which is disconcerting.
2. You really should put the preview targetimage in the completed compensation interface window so I don't have to dig through the relevant compensation run files to check to see if all the targets were actually captured, or if I need to re-run the routine for that unit. This would also help users troubleshoot their target positioning to ensure the correct distance from the wall, unit height, etc... is achieved.

It's not the biggest deal when you have one unit, but when you have more than a dozen to compensate every two weeks to one month, it starts to get pretty tedious with the smaller inefficiencies.
Also for other users, make sure you're using WLAN instead of AP for the scanner if possible, the data transmission over 5ghz band is much faster and cuts the overall time of the compensation process considerably.
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Last edited by TommyMaddox on Mon Aug 23, 2021 7:41 pm, edited 1 time in total.
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Re: Faro Scene 2021 - Performance Issues

Post by MaZschi »

Thank you Tommy.

We introduced changes to the on-site compensation in version 2021.1.
Extract from the release notes:

On-Site Compensation Update:
•The On-Site Compensation scan angle was reduced allowing for faster compensation, but you must take care to orient the scanner accurately towards the targets.
•This new implementation of On-Site Compensation only works with Focus firmware 6.8(or higher) with FocusS and FocusS Plus scanners. If you are using earlier firmware versions or older scanners, you must use an older version of SCENE.
•Firmware version 6.8 is compatible with the old SCENE versions as well as with this version.


I am sure you did, but could you please double check if you followed these instructions? https://knowledge.faro.com/Hardware/3D_ ... s_S_Series

In parallel I will share your feedback with the according people to review.

Thanks.
Marc Zschieschang
Product Markting Manager - Software
FARO Technologies, Inc.
[email protected]
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Re: Faro Scene 2021 - Performance Issues

Post by TommyMaddox »

Yes Marc I can assure you instructions are followed, having done this several hundred times, instructed others how to do it over the last 4-5 years.

I've got some more images here for you. I ran two compensations, one following the centering instructions (images labeled default), and one where I manually rotated it slightly further to the left, lining up approximately with the deadbolt on the door in the images. You can see that the default arrangement cuts off a good chunk of the targets (this is definitely the best result example I have for the default routine), while the manually rotated one does not. End results in this run are similar, but previous results are not, despite not applying the first compensation result.

When I observed the scanning operation, the unit actually completed a fairly wide sweep under both circumstances, fully covering the target line. I would now assume that the issue lies in either what data was filtered, recorded, transmitted, or an issue in handling it inside SCENE.

Due to what I presume are changes to the compensation routine, the actual scan data with extracted dots are no longer visible inside the SCENE workspace, so I can't see if the issue lies there.
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Re: Faro Scene 2021 - Performance Issues

Post by Raimund58 »

TommyMaddox wrote: Mon Aug 23, 2021 6:48 pm Also for other users, make sure you're using WLAN instead of AP for the scanner if possible, the data transmission over 5ghz band is much faster and cuts the overall time of the compensation process considerably.
Thank you Tommy, that was really helpful :D
I never knew that it was possible to connect over WLAN, I always assumed it needed the AP.
Btw, I also face the same OSC alignment issues as you. The FARO support wrote that she needs to communicate with the Hardware team. No news from that side.

Kind regards
Raimund
\o/
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Re: Faro Scene 2021 - Performance Issues

Post by Thomas Rexer »

We updated the On-Site Compensation procedure (OSC) and reduced the scan angle to speed-up the OSC scan and post-processing in Scene (2021.1 or higher). This will save time.

There is an updated article and description in our KB: https://knowledge.faro.com/Hardware/3D_ ... s_S_Series.
This new, updated KB article describes the best practice for the setup in detail. I recommend to follow these new instructions and setup precisely.

It's more important now to accurately align the scanner parallel to the wall with targets when prompted in Scene before the real OSC scan is started (before clicking the button “Scan & Compensate”).

In using the described setup you should receive a TargetImage as shown in the picture below.
Regards, Thomas

targetImage.jpg
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Re: Faro Scene 2021 - Performance Issues

Post by TommyMaddox »

Raimund58 wrote: Tue Aug 24, 2021 9:04 am
TommyMaddox wrote: Mon Aug 23, 2021 6:48 pm Also for other users, make sure you're using WLAN instead of AP for the scanner if possible, the data transmission over 5ghz band is much faster and cuts the overall time of the compensation process considerably.
Thank you Tommy, that was really helpful :D
I never knew that it was possible to connect over WLAN, I always assumed it needed the AP.
Btw, I also face the same OSC alignment issues as you. The FARO support wrote that she needs to communicate with the Hardware team. No news from that side.

Kind regards
Raimund
It's also a pretty convenient way to check for firmware updates and install them from FARO's servers.

We run AP only for if we need to use phone/tablet to remote control the scanner when it is at a distance or on a motion sensitive platform.
You can leave your office saved WLAN there for running the compensation routines and installing new firmware.
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Re: Faro Scene 2021 - Performance Issues

Post by BeateM »

Two important things to consider:
1. Align the scanner exactly after horizontal alignment as there is a small rotation done.
2. Using Scene 2021.1 or higher and FW 6.8 with recommended distance to targets of ~1,40m ensure to have the 0° direction aligned to the targets/wall (small white dot on the silver-grey scanner foot) and not 180°.

This will give you a correct result and targetimage size.

Regards,

Beate Metzler | Technical Support Specialist
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Re: Faro Scene 2021 - Performance Issues

Post by Raimund58 »

BeateM wrote: Thu Aug 26, 2021 7:56 am 2. Using Scene 2021.1 or higher and FW 6.8 with recommended distance to targets of ~1,40m ensure to have the 0° direction aligned to the targets/wall (small white dot on the silver-grey scanner foot) and not 180°.
Yup, that fixed it for me.
So if the targets are cut, rotate around 180° and you are fine : )

EDIT: The Quality in the Compensation Report stays almost the same if you do a warm up scan prior the calibration.
I did a test where I scanned in this this configuration: warm up scan(15min) -> 180° -> 0° -> 180° -> 0°
and I could not note a significant difference in the quality reports.
\o/
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Re: Faro Scene 2021 - Performance Issues

Post by TommyMaddox »

BeateM wrote: Thu Aug 26, 2021 7:56 am Two important things to consider:
1. Align the scanner exactly after horizontal alignment as there is a small rotation done.
2. Using Scene 2021.1 or higher and FW 6.8 with recommended distance to targets of ~1,40m ensure to have the 0° direction aligned to the targets/wall (small white dot on the silver-grey scanner foot) and not 180°.

This will give you a correct result and targetimage size.

Regards,

Beate Metzler | Technical Support Specialist
FARO Europe GmbH | Lingwiesenstraße 11/2 | D-70825 Korntal-Münchingen
Tel.: +49 (0)7150 9797 -400 | Fax: +49 (0)7150 9797 -9348
Nasdaq: FARO | [email protected] | www.faro.com
All of our units have the ATS Quick Release V2 mounting line aligned with the white dot on the scanner pan axis base. So using the 0 degree orientation is not an issue.

I've added a new target array measured and laid out according to the new instructions for this version. I would recommend that since there's no indication that the actual target layout be recommended to change anywhere in the UI process, or in the changelog (It says the scanner must be precisely oriented, which for us has always been the case), you should consider displaying the new target layout and measurements in the OSC process UI.

I still maintain that the TargetImage file should be displayed in the results window after running the compensation, to help add a quick visual check to the statistical results.
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Re: Faro Scene 2021 - Performance Issues

Post by BeateM »

TommyMaddox wrote: Thu Aug 26, 2021 7:54 pm

All of our units have the ATS Quick Release V2 mounting line aligned with the white dot on the scanner pan axis base. So using the 0 degree orientation is not an issue.

I've added a new target array measured and laid out according to the new instructions for this version. I would recommend that since there's no indication that the actual target layout be recommended to change anywhere in the UI process, or in the changelog (It says the scanner must be precisely oriented, which for us has always been the case), you should consider displaying the new target layout and measurements in the OSC process UI.

I still maintain that the TargetImage file should be displayed in the results window after running the compensation, to help add a quick visual check to the statistical results.
1. Regarding the smaller, "cropped" images we can only reproduce when scanners zero direction is not aligned to the wall.
(Battery and sd card should be on the right site, display on the left when you stand behind the scanner and look to the targets.). Tommy I know you are familiar with that just to be 100% sure.
In case this is different for you, we have indeed to investigate furthermore but nevertheless results should be fine when the targets are green.

2. In Scene Release notes we mention the reduced angle for OSC. You are right, there are no "new" info about placing the targets. But you can still follow the OSC procedure and placing targets as you know before. It will still work. But while testing OSC with latest Scene and firmware the updated article on Faro knowledge base offers the best practices, especially for new versions.
But I agree to add/replace the recommended target layout sketch to the Scene OSC UI too.

3. The targets are saved in the OnsiteCompensation folder the link is displayed in the result screen. So two clicks to open the targetimage to check. But I can add this as an improvement to discuss by Product Management.

Beate Metzler | Technical Support Specialist
FARO Europe GmbH | Lingwiesenstraße 11/2 | D-70825 Korntal-Münchingen
Tel.: +49 (0)7150 9797 -400 | Fax: +49 (0)7150 9797 -9348
Nasdaq: FARO | [email protected] | www.faro.com
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