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  • Kai Heckel

    October 25, 2021 at 11:06 am

    Hi Hoontaek,
    thank you for your question.

    In the specific case of specular reflection, there is no signal returned to the sensor (imagine a mirror to which you point a flashlight from the side). Therefore, calm water surfaces are perfect examples of specular reflection with extremely low backscatter values, making them the darkest pixels in the image.

    Hope this helps.