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Figure 1: The basic pattern of image deformation.
In other words, we assume the image deformation to be constant
for all photograms in the block.
2.2 From the infinite number of possible systematic image deform-
ations a large and important class can be represented as an
algebraic sum of a few properly selected basic patterns of
image deformation. For this purpose Masson d'Autume (1966)
proposed a basic set of 4 patterns. In the present context
we will use the four basic patterns which were proposed by 3.5
Kubik (1971) and which are denoted by A, P, T and R (cf.figure E, Se
The study of a large class of image deformations can then be
limited to just the basic types, thus simplifying the task
considerably.In the basic patterns the maximum coordinate