Hello, in working with Landsat 8 surface reflectance data, values ranging [0,1], we are extracting endmembers using NFINDR and creating abundance maps using FCLS to create non-negative abundance maps which observe the sum-to-one constraint. However, we are finding that the normalize=True keyword argument needs to be set to True to do this. With the normalize keyword argument set to False, the abundance maps are largely negative.
I can't seem to understand why, since the endmember data is already between 0 and 1 as is the surface reflectance imagery. Can you please advise?
Hello, in working with Landsat 8 surface reflectance data, values ranging [0,1], we are extracting endmembers using NFINDR and creating abundance maps using FCLS to create non-negative abundance maps which observe the sum-to-one constraint. However, we are finding that the normalize=True keyword argument needs to be set to True to do this. With the normalize keyword argument set to False, the abundance maps are largely negative.
I can't seem to understand why, since the endmember data is already between 0 and 1 as is the surface reflectance imagery. Can you please advise?