ExRExcess Red Index

Summary

The Excess Red Index (ExR) is a vegetation spectral index intended for multispectral sensing. It was introduced in 1999; its source is cited as George E. Meyer, Timothy W. Hindman, & Koppolu Laksmi (1999). <title>Machine vision detection parameters for plant species identification</title>. SPIE Proceedings, 3543. https://doi.org/10.1117/12.336896 🡕.

Based on the latest citation data, this index is in the 33.55th percentile overall, ranking 209 out of 313 indices with citation data. Among the 43 indices published within two years of 1999, it ranks 38 (13.95th percentile). Within the vegetation application domain, it is in the 23.7th percentile and ranks 162 out of 211 indices with citation data. Among the 36 similarly aged vegetation indices, it ranks 34 (8.33th percentile).