Imaging system transfer function control method and apparatus
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United States of America Patent
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Apr 15, 1997
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N/A
app pub date -
Jul 31, 1995
filing date -
Jul 31, 1995
priority date (Note) -
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Abstract
Accurately measuring and controlling the system transfer function of an imaging system, by eliminating interference from aliases. An image is captured of an image primitive with a uniaxial pattern, oriented at an angle to the primary axes of a sampling array. In order to accurately measure the system transfer function, a two-dimensional frequency representation is computed. The aliased components of the representation are separated from the unaliased components by translation in frequency along the axis perpendicular to the axis of the image primitive. Accurate measurement of the system transfer function makes it possible to accurately control the system transfer function.
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