Remotely sensing the photochemical reflectance index, PRI

Vern Vanderbilt; Craig Daughtry; Robert Dahlgren

doi:10.1117/12.2187160

1 September 2015 Remotely sensing the photochemical reflectance index, PRI

Vern Vanderbilt, Craig Daughtry, Robert Dahlgren

Proceedings Volume 9613, Polarization Science and Remote Sensing VII; 96130Z (2015) https://doi.org/10.1117/12.2187160
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

In remote sensing, the Photochemical Reflectance Index (PRI) provides insight into physiological processes occurring inside leaves in a plant stand. Developed by^1,2, PRI evolved from laboratory reflectance measurements of individual leaves. Yet in a remotely sensed image, a pixel measurement may include light from both reflecting and transmitting leaves.

We compared values of PRI based upon polarized reflectance and transmittance measurements of water and nutrient stressed leaves. Our results show the polarized leaf surface reflection should be removed when calculating PRI and that the leaf physiology information is in leaf interior reflectance, not leaf transmittance.

Citation Download Citation

Vern Vanderbilt, Craig Daughtry, and Robert Dahlgren "Remotely sensing the photochemical reflectance index, PRI", Proc. SPIE 9613, Polarization Science and Remote Sensing VII, 96130Z (1 September 2015); https://doi.org/10.1117/12.2187160

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