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OTCI - OLCI Tristimulus

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The colours from natural waters differ markedly over the globe, depending on the water composition and illumination conditions. The space-borne “ocean colour” instruments are operational instruments designed to retrieve important water-quality indicators, based on the measurement of water leaving radiance in a limited number (5 to 10) of narrow (≈10 nm) bands.

The derivation of the true colour of natural waters is based on the calculation of the Tristimulus values that are the three primaries (X, Y, Z) that specify a colour stimulus of the human eye. On how tristimulus is calculated, read here.

Description of representative images

Tristimulus water colors at west coast of Myanmat. Acquired on 27.1.2020, processed by Sentinel Hub.

Tristimulus of Myanmar