Calibration Marker

[Andrew Hogue]

Hi all,

Could someone send me the file for a large calibration marker (going to print one at 2'x2' and another 3'x3') to place in our space.  

I won't have access to my system until next week and I only have macs at home.... :(. lol

Thanks in advance!

-- Andrew

[Brekel]

I've uploaded the set of markers here so you can print them without having access to the app to generate them:

https://brekel.com/release/Markers_v3.zip

Larger is better in this case.

Op woensdag 30 september 2020 om 21:11:19 UTC+2 schreef Andrew Hogue:

[susana]

These markers https://brekel.com/release/Markers_v3.zip are different than the markers available from the PointCloud v3 BETA app. Which markers should I be using?

Thanks,

Susana

[Brekel]

Those markers in the zip should be the correct ones and also be the same as the app generates.

Internally I am working on a new marker tracker but this should not be enabled in the release app yet.

What does your marker look like?

A black square with some white areas in the middle (like in the zip)?

Or are there 4 additional black squares around the main one?

Op dinsdag 17 november 2020 om 23:14:38 UTC+1 schreef susana:

[Brekel]

For reference, the left marker is what it should look like, not the right.

Op woensdag 18 november 2020 om 12:38:10 UTC+1 schreef Brekel:

[susana]

Hi Jasper, 

Thank you for your responses.

I am now using the marker on the left (printed on size A1 paper). I got this marker from https://brekel.com/release/Markers_v3.zip. The marker on the right is, in fact, what I was first using and what the app printed for me.

With the correct marker, I now got Set Origin to do something. The origin (on the Viewport) does indeed set to the marker. The three sensors are now positioned together with the same transform (which I'm not sure is right).

If I now click on Start Sensor Alignment and slowly move and rotate the marker in different positions making sure that more than one sensor recognizes it at the same time in different positions within the stage/volume, nothing happens – there is no effect on the transform positions of any of the sensors. They stay in the same position, all together.

I've experimented with different settings for Detect Every Nth Frame, Align Every Nth Frame, and Quality Threshold, with no success. Sometimes (not always) I get a message to the effect that 0 frames out of 400... (sorry, I do not have exact wording right now). 

Thanks,

Susana

[susana]

Excuse me, let me make it clearer:

If I now click on Start Sensor Alignment and slowly move and rotate the marker in different positions, I do see on the Viewport that the three sensors see the target (I see a line being drawn from sensor to marker. However, there is no effect on the transform positions of any of the sensors. They stay in the same position, all together.

[Brekel]

Good to hear the marker confusion is solved, no idea how that marker generator got into a release build instead of my internal builds.

For the current alignment algorithm it is important that multiple sensors see the marker simultaneously, I'm working on a more robust algorithm that looks at things more holistically.

Holding it roughly paralell with the floor and pointing up while moving it around should usually be good for that.

Op woensdag 18 november 2020 om 21:45:19 UTC+1 schreef susana: