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Author Topic: Processing Sequoia + images with targetless radiometric calibration  (Read 1890 times)

Paulo

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Hi all,

I am trying to process a set of Sequoia + multispectral images....

Apparently the reflectance calibration can be done without targets.... just using a dat file provided in images folder during capture see https://support.pix4d.com/hc/en-us/articles/209362146-How-to-process-Sequoia-imagery#label3

Is there a procedure to do this  calibration in Metashape?

Unfortunately the image data set I got does not include the dat file....
Best Regards,

Paul Pelletier,
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Alexey Pasumansky

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Re: Processing Sequoia + images with targetless radiometric calibration
« Reply #1 on: July 08, 2019, 09:14:14 PM »
Hello Paul,

Usually the required information is included to the image meta-information and you can follow the suggested workflow for MicaSense cameras (Sequoia data is treated in a similar way), skipping loading panel images stage:
https://agisoft.freshdesk.com/support/solutions/articles/31000148780-micasense-rededge-mx-processing-workflow-including-reflectance-calibration-in-agisoft-metashape-pro
Best regards,
Alexey Pasumansky,
Agisoft LLC

Paulo

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Re: Processing Sequoia + images with targetless radiometric calibration
« Reply #2 on: July 08, 2019, 10:15:56 PM »
Hi Alexey,

in this case, to do reflectance calibration, as there are no panels, then in Calibrate Reflectance Window I would just check Use sun sensor, correct?
Best Regards,

Paul Pelletier,
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Alexey Pasumansky

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Re: Processing Sequoia + images with targetless radiometric calibration
« Reply #3 on: July 08, 2019, 10:20:25 PM »
Hello Paul,

Yes, just enable Sun Sensor option and perform the calibration operation.
Best regards,
Alexey Pasumansky,
Agisoft LLC