The formula for NDBI for landsat 8 is (NIR-swir)/(NIR+swir). I am confused if it is (Band5-band6)/(Band5+band6) OR (Band5-band7)/(Band5+band7)?
(For Landsat 5TM, NDBI formula is (Band5-Band4)/(Band5+Band4), and wavelength of band 5 is between 1.55-1.75. So, by refering the wavelength, I am guessing, below formula to be correct for Landsat 8.
(Band5-band6)/(Band5+band6), but I want to be sure. Please help me clear my confusion.