width * height * bands values, of the multispectral raster's array type (Float64Array when it is not a typed array).
Width in pixels.
Height in pixels.
Values per pixel: every multispectral band, alpha included.
The no-data value of the result: the multispectral one, else NaN for floats or 0 for integers.
The intensity weights used, in the order of the sharpened bands (summing to 1).
Detail gains of the sharpened bands (1 for ihs, varying for gram-schmidt, 0 for brovey).
The fitted weights and gains, to sharpen other pieces of the same image with (see options.model).
A pan-sharpened raster: the multispectral bands at the panchromatic resolution.