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- W4308730156 abstract "When a source's focal spot is known, an x ray image can be significantly improved by a deconvolution algorithm with the point spread function (PSF). We propose a simple method to measure the PSF for image restoration using x ray speckle imaging. In this method, the PSF is reconstructed with intensity and total variation constraints from a single x ray speckle of an ordinary diffuser. Compared with the traditional time-consuming measurement with a pinhole camera, the speckle imaging method is fast and easy to execute. When the PSF is available, we use a deconvolution algorithm to reconstruct the sample's radiography image, and the result provides more structural details than the original images." @default.
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- W4308730156 date "2022-12-01" @default.
- W4308730156 modified "2023-10-16" @default.
- W4308730156 title "Accurate PSF determination in x ray image restoration" @default.
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- W4308730156 doi "https://doi.org/10.1364/ol.476041" @default.
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