Minimum error image reconstruction for coded mask telescopes
نویسندگان
چکیده
منابع مشابه
Sensitivity of coded mask telescopes.
Simple formulas are often used to estimate the sensitivity of coded mask x-ray or gamma-ray telescopes, but these are strictly applicable only if a number of basic assumptions are met. Complications arise, for example, if a grid structure is used to support the mask elements, if the detector spatial resolution is not good enough to completely resolve all the detail in the shadow of the mask, or...
متن کاملThe sensitivity of coded mask telescopes
Simple formulae are often used to estimate the sensitivity of coded mask X-ray or gamma-ray telescopes, but these are strictly only applicable if a number of basic assumptions are met. Complications arise, for example, if a grid structure is used to support the mask elements, if the detector spatial resolution is not good enough to completely resolve all the detail in the shadow of the mask or ...
متن کاملImaging extended sources with coded mask telescopes: Application to the INTEGRAL IBIS/ISGRI instrument
In coded mask techniques, reconstructed sky images are pseudo-images: they are maps of the correlation between the image recorded on a detector and an array derived from the coded mask pattern.
متن کاملInvariant error metrics for image reconstruction.
Expressions are derived for the normalized root-mean-square error of an image relative to a reference image. Different versions of the error metric are invariant to different combinations of effects, including the image's (a) being multiplied by a real or complex-valued constant, (b) having a constant added to its phase, (c) being translated, or (d) being complex conjugated and rotated 180 degr...
متن کاملImage Reconstruction Error for Optical Flow
First, we examined a number of methods to perform forward and backward image reconstruction using optical ow. Given an image and its optical ow, we used these methods to generate the next image in the sequence. The RMS diierences between the actual next images and their reconstructed versions for 3 synthetic image sequences, for which the correct ows were known, allowed us to determine which of...
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ژورنال
عنوان ژورنال: Astronomy and Astrophysics Supplement Series
سال: 1996
ISSN: 0365-0138,1286-4846
DOI: 10.1051/aas:1996310