Integral sampling

Holt, A.G.J.; Hill, John J.; Linggard, R.

doi:10.1109/proc.1973.9138

Cited by 6 publications

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“…fmn=f (mtx, nty), (1) or the (weighted) image intensity integrated over raster cells (integral sampling, [1]), e .g .…”

Section: Introductionmentioning

confidence: 99%

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Integral Sampling in Optics

1976

Optica Acta: International Journal of Optics

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An image can be sampled by taking as sample values either the image intensity at defined sample points or the image intensity integrated over regularly spaced raster cells . The latter concept, termed integral sampling, is investigated using deterministic and statistic methods . It is proved that the use of integral rather than point sampling results in reduced error due to aliasing when an image is reconstructed from its samples . Filters for optimal reconstruction from samples taken in the presence of noise are described . The special cases of integral sampling of high-pass filtered images and of binary pulse-code modulated images are analysed . Integral sampling can be performed optically ; it is shown to be of practical interest for image evaluation (thematic mapping) and for optical spatial regenerative repeaters .

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“…fmn=f (mtx, nty), (1) or the (weighted) image intensity integrated over raster cells (integral sampling, [1]), e .g .…”

Section: Introductionmentioning

confidence: 99%

“…In equations (1) and (2), m and n represent integers and Ox, Ay are the spatial separations of the samples in the x and y direction, respectively . Any physical realization of image sampling necessarily represents a form of integral sampling, because of the non-zero width of a physical sampling aperture .…”

Section: Introductionmentioning

confidence: 99%