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Updated: Jan 11, 2026

X-ray Powder Diffraction in Conservation Science: Towards Routine Crystal Structure Determination of Corrosion Products on Heritage Art Objects
Published on: June 8, 2016
Enhanced X-ray structural analysis using total variation denoising of X-ray diffraction images
Kouhei Ichiyanagi1, Toshiyuki Sasaki1, Yuichi Yokoyama1
1Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Hyôgo 679-5198, Japan.
Abstract:
A denoising method based on total variation regularization was applied to X-ray diffraction images obtained from X-ray crystallography experiments. This approach significantly enhanced the signal-to-noise ratio of weak diffraction spots. Subsequently, the denoised images were used for crystal structure data processing using cytidine as a standard sample, which yielded an improved structural analysis result. This image processing technique offers a practical method for improving the quality of weak diffraction data, which is particularly relevant for challenging samples such as microcrystals, thereby enabling more reliable crystallographic analysis.
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