Since each row corresponds to a summation surface, I apply the row normalization to imaging operators implemented as (sum) pull operators, and solve the normalized system:

(41) |

The solution in equ-mod is equivalent
to applying the imaging operator followed by a diagonal
transformation . Therefore, I refer to this
normalization as *model* or *image normalization*.
Given that each row of corresponds to an output bin,
represents a normalization by the coverage after imaging.
This coverage is the *imaging fold*, e.g, AMO fold, DMO fold
... etc.

1/18/2001