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description Publicationkeyboard_double_arrow_right Article , Preprint , Journal 2020Embargo end date: 01 Jan 2020Publisher:SPIE-Intl Soc Optical Eng Satoshi Takashima; Hirokazu Odaka; Hirokazu Odaka; Toru Tamagawa; Yuanhui Zhou;Tomoaki Kasuga;
Tomoaki Kasuga
Tomoaki Kasuga in OpenAIRESoichiro Hashiba;
Yuki Aizawa; Tsubasa Tamba;Soichiro Hashiba
Soichiro Hashiba in OpenAIREAya Bamba;
Kosuke Hatauchi;Aya Bamba
Aya Bamba in OpenAIREarXiv: 2007.15278
The coded aperture imaging technique is a useful method of X-ray imaging in observational astrophysics. However, the presence of imaging noise or so-called artifacts in a decoded image is a drawback of this method. We propose a new coded aperture imaging method using multiple different random patterns for significantly reducing the image artifacts. This aperture mask contains multiple different patterns each of which generates a different artifact distribution in its decoded image. By summing all decoded images of the different patterns, the artifact distributions are cancelled out, and we obtain a remarkably accurate image. We demonstrate this concept with imaging experiments of a monochromatic 16 keV hard X-ray beam at the synchrotron photon facility SPring-8, using the combination of a CMOS image sensor and an aperture mask that has four different random patterns composed of holes with a diameter of 27 um and a separation of 39 um. The entire imaging system is installed in a 25 cm-long compact size, and achieves an angular resolution of < 30'' (full width at half maximum). In addition, we show by Monte Carlo simulation that the artifacts can be reduced more effectively if the number of different patterns increases to 8 or 16. 20 pages, 8 figures, accepted for publication in JATIS
Journal of Astronomi... arrow_drop_down Journal of Astronomical Telescopes Instruments and SystemsArticle . 2020 . Peer-reviewedData sources: Crossrefhttps://dx.doi.org/10.48550/ar...Article . 2020License: arXiv Non-Exclusive DistributionData sources: DataciteJournal of Astronomical Telescopes Instruments and SystemsJournalData sources: Microsoft Academic Graphadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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more_vert Journal of Astronomi... arrow_drop_down Journal of Astronomical Telescopes Instruments and SystemsArticle . 2020 . Peer-reviewedData sources: Crossrefhttps://dx.doi.org/10.48550/ar...Article . 2020License: arXiv Non-Exclusive DistributionData sources: DataciteJournal of Astronomical Telescopes Instruments and SystemsJournalData sources: Microsoft Academic Graphadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1117/1.jatis.6.3.035002&type=result"></script>'); --> </script>
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