Linear Image Approximations
At some level of approximation human vision is a linear convolution of some function of light intensity with a spatial resolution response function. This simple linear image model is not quantitatively precise but allows for an easy interpretation of everyday observations. Electron microscope images do not in general follow a simple linear image model to any great precision. However it is useful to try to find the conditions under which an electron micrograph can be interpreted as linear image of some physical property of the specimen.
KeywordsTransfer Function Spatial Frequency Point Spread Function Linear Image Partial Coherence
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