
7.7 Some Further Restoration Methods
331
Fig. 16 The image of Fig. 13 filtered without segmentation.
7.7 SOME FURTHER RESTORATION METHODS
In this section we will present the theory behind three more restoration
techniques. They all have one feature in common: extensive computational
requirements. We first discuss the nonlinear technique of the maximum a
posteriori (MAP) method which has the advantage of taking into account
the nonlinearities associated with the image recording process, and allowing
the ensemble mean of the image random process to be nonstationary. The
maximum entropy method, discussed next, also permits one to take into
accoun ...