To complete the final estimation of , we make a simple set of mappings from the least-squares (or l1) estimates derived in the previous sections. A map of can be obtained directly from the result of (102) or (103):
Then, since there is a one-to-one mapping of to any point , and to the same point , there is a unique map of and to such that:
which is the desired result. This completes the angle-dependent reflectivity estimation process.