I have generated orthomosaics of multispectral and rgb images and have generated reflectance and index mosaics for the two bands I would like to use (NIR and Blue). The index values for each pixel in the NIR index orthomosaic range from 0-1 (seemingly normalized). The index values for each pixel in the Blue index orthomosaic range from 14-255 (seemingly not normalized).
What is happening behind the scenes that causes this difference? How can I correct one of the bands in order to have the pixel values represent the same thing?
Can I use the method described here https://eclass.teicrete.gr/modules/document/file.php/TP283/Lab/03.%20Lab/lesson3Notes.pdf to change the pixel values for one of the two indices?
Any additional information you can provide will be helpful.