If you have near-infrared imagery you can composite that imagery with the visible-light imagery to see how healthy the vegetation is.
- NDVI and NRG compositing
- Video: Creating infrared composites of aerial wetlands imagery - Learn to combine infrared and visible-light photographs (taken from balloon photography) to produce an "NRG" composite, where reddish color indicates photosynthesis.
- Video: Creating false-color NDVI with aerial wetlands imagery - Learn to use the open-source GIMP application to create a Normalized Differential Vegetation Index image from infrared and visible-light aerial photographs. Also explore false-color techniques for presenting the data.
Stretch the contrast and saturation of your images to see more detail, especially underwater. Read more here: