A modified bare soil index (MBI) was introduced to highlight bare soil features using shortwave infrared (SWIR) and near-infrared (NIR) wavelengths derived from Landsat surface reflectance.
MBI value ranges from −0.5 to + 1.5, in which bare soil is emphasized and received positive values until maxima.
Nguyen, C. T., Chidthaisong, A., Diem, P. K., & Huo, L. (2021). A Modified Bare Soil Index to Identify Bare Land Features during Agricultural Fallow-Period in Southeast Asia Using Landsat 8. Land, 10, 1–17. doi: 10.3390/land10030231