Processing Sequoia + images with targetless radiometric calibration

[Paulo]

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....

[Alexey Pasumansky]

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

[Paulo]

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?

[Alexey Pasumansky]

Hello Paul,

Yes, just enable Sun Sensor option and perform the calibration operation.