The Aliasing Problems in Two-Dimensional Sampled Imagery
Most electrooptical imaging devices involve sampling at both the camera and display. The electron beam scanning of television and the optical-mechanical scanning of infrared imaging devices are examples of one-dimensional sampling in the imaging sensor. The excitation of cathode ray tube phosphors by a scanned electron beam is an example of sampling in the displayed image. We are all familiar with the pictures produced by imaging devices with one-dimensional sampling but less familiar with pictures produced by electrooptical devices sampling in two dimensions. Recently two-dimensional arrays of photoconductive or photovoltaic detectors have been used to sense a scene, and two-dimensional arrays of photoemitting diodes, etc. have been used to display imagery.
KeywordsSpatial Frequency Reciprocal Lattice Sampling Lattice Street Pattern Spatial Frequency Domain
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