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Effect of sample displacement in time-sequential sampling of spatiotemporal signals

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Abstract

Algorithms for digitally processing sampled spatiotemporal signals typically ignore the fact that those samples were obtained time-sequentially, rather than instantaneously, at the beginning of each frame period The effect of displacing time-sequentially obtained samples to a non-time-sequential lattice is analyzed for both deterministic and nondeterministic signals Sample displacement is shown to cause unavoidable frequency-domain aliasing The resulting artifacts are compared in test signals that have been sampled with a lexicographic and bit-reversed ordering of the sample points

© 1983 Optical Society of America

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