Experiment with NAIP band ratios

[aazuspan]

Radiometric variability between (and even within) NAIP acquisitions due to sun angle and/or sensor calibration can be substantial. If different bands have similar biases, band ratios may help to normalize imagery and improve model generalization. Implementing this would just require adding a processing step after loading NAIP imagery and re-running the workflow with the new bands.

We may be able to evaluate this without even training a model just by sampling a large number of pseudo-invariant features across years and seeing how inter-year variance compares between raw bands and ratios.