calibration factors do not match the latest published by MAXAR

[7yl4r]

latest calibration factors (gain & offset) in this pdf.

• gain & offset emailed to @tisayr from @mjm8 do not match those in the pdf above
• wv2 offset & gain not included in the matlab code

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How to check atm correction: choose area that doesn't change w/ time, compare all images from different dates and look for images w/ very different colors.

[7yl4r]

Or... is it this pdf:

ABSRADCAL_FLEET_2016v0_Rel20170606(4).pdf

[mjm8]

Hi Tylar, Gain/offset values should change over time as the sensor calibration parameters change. One important element is that the WorldView-2 imagery I worked with had already been radiometrically calibrated, so gain/offset and subsequent function were not necessary. Newer data may need to be revisited though. Best, Matt

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On Fri, Nov 5, 2021 at 12:51 PM Tylar ***@***.***> wrote: Or... is it this pdf: ABSRADCAL_FLEET_2016v0_Rel20170606(4).pdf <https://github.com/USF-IMARS/wv2-processing/files/7487634/ABSRADCAL_FLEET_2016v0_Rel20170606.4.pdf> — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#38 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AH7I4KCBDHYHE7YXEK3ZH7TUKQKSLANCNFSM5G7ZF2RA> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

-- Matt McCarthy, Ph.D. Research Associate Scientist Remote Sensing Group | Geographic Data Science Section Geospatial Science & Human Security Division Oak Ridge National Laboratory