I understand that using the Hyperspectral Unmixing Tool in the Orfeo-Toolbox gives me the abundance matrix of the endmembers in a given pixel, what I want to do is to calculate the percentage each endmember contributes to that pixel.

An example pixel from my work would be: [137.75, 123.70, 58.39] which results in the following abundance matrix with 4 endmembers: [0.76, 0.03, -0.35, 0.92].

As far as I understand, these are the coefficient of the linear equation, that when multiplied with the end members gives me the pixel value. How can I now calculate the percentage of the abundance each endmember has in the pixel?

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