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2.1.2 On the optical transfer function

The term \( \mathbf{F}(o\otimes r) \) as it appears in Equation 10 (and various others) can be further optimised if a theoretical OTF is used. An experimentally obtained OTF \( o \) requires its Fourier transform to be calculated in order for it to be convoluted with the smoothing function \( r \)4, this requires both memory and time. However, if a theoretical equation is obtained for \( o \), then the entire term \( \mathbf{F}(o\otimes r) \) may be evaluated theoretically. This will give an equation that can be used in the algorithm, in order to deconvolute Equation 10. Thus, a substantial amount of time and memory can be saved by using a theoretically computed OTF. Refer to Section 2.2 for details of what OTF was used.

Kevin Pulo