Relationship with the simultaneous unmixing of several single mixed pixels.

• The simultaneous unmixing of sets of mixed pixels treats each pixel as an individual, assigning it a separate set of proportions. The Bosdogianni et.al. method treats all pixels in the mixed set as having the same average proportions and attributes their deviation from the average to intraclass variability.

• The simultaneous unmixing of sets of mixed pixels cannot recover more classes than bands available. The Bosdogianni et.al. approach can. (See advantages of the method).

• The simultaneous unmixing of sets of mixed pixels cannot incorporate the effect of intraclass variability of the pure classes.