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Author Topic: Multi Camera Aligment  (Read 1831 times)

Darko

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Multi Camera Aligment
« on: March 11, 2022, 04:33:26 PM »
Hi Guys,
I have the multicam rig with two same cameras (A6000+25mm). The master is Nadir while the Slave is 6cm behind and 2cm lower from the master position and aiming right 20deg and  20deg front from the nadir direction. My GNSS antenna was 1.04m above, 0.85m behind and 0.88m to the left from the master camera center. So my GNSS offset was X=-0.88, Y=-0.85 and Z=+1.04 from the master camera while the slave offset was X=0, Y=-0.06, Z=-0.02. Is it so?

I have tried the aligment and the result was with the errors of aprox 3m. Than I have used 2 chunks, first with Nadir camera and offsets for Master, reuslting in the precision measured in mm. The same I got for the second chunck for the oblique camera and offset recalculated to the center of Slave, X=-0.88, Y=-0.79 and Z=+1.06. Perfect aligment with separate chunks and chatastrofic when working with multicam.

Where is the mistake?

Paulo

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Re: Multi Camera Aligment
« Reply #1 on: March 11, 2022, 05:56:23 PM »
Hello Darko,

a question for you. Are the 2 cameras synchronized? I think a camera rig setup supposes cameras are taking fotos at same time....



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Paul Pelletier,
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Darko

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Re: Multi Camera Aligment
« Reply #2 on: March 12, 2022, 12:12:03 AM »
Yes.. Both are triggered by the flight controller at the same moment.

Paulo

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Re: Multi Camera Aligment
« Reply #3 on: March 12, 2022, 03:21:18 PM »
Hi Darko,

if you can share  a sample data set of the 2 cameras rig, maybe we could have a look at it to see what would be the best way to treat this type of survey  :)....

Do you have an idea of how precise the camera synchro is?
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Paul Pelletier,
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Darko

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Re: Multi Camera Aligment
« Reply #4 on: March 13, 2022, 08:40:28 PM »
Sorry Paulo,

I am not sure that I am allowed to share it just like that. Times are changing.
The project finished in two separate chunks merged just before making DEM and ORTHO. Results are OK althgough a bit complicated procedure.

Thanks anyway and what else can I wish to you and all the good people,

MAKE LOVE NOT WAR

Paulo

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Re: Multi Camera Aligment
« Reply #5 on: March 13, 2022, 10:01:43 PM »
Sorry Paulo,

I am not sure that I am allowed to share it just like that. Times are changing.
The project finished in two separate chunks merged just before making DEM and ORTHO. Results are OK althgough a bit complicated procedure.

Thanks anyway and what else can I wish to you and all the good people,

MAKE LOVE NOT WAR
Great Darko,

same to you and all! Peace....


Best Regards,
Paul Pelletier,
Surveyor