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公开(公告)号：US20220308244A1
公开(公告)日：2022-09-29
申请号：US17827321
申请日：2022-05-27
发明人： David Boardman , Adam Sarbutt , Alison Flynn , Dale Prokopovich
摘要： A coded mask apparatus is provided for gamma rays. The apparatus uses nested masks, at least one of which rotates relative to the other.
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公开(公告)号：US11346964B2
公开(公告)日：2022-05-31
申请号：US17015839
申请日：2020-09-09
发明人： David Boardman , Adam Sarbutt , Alison Flynn , Dale Prokopovich
摘要： A coded mask apparatus is provided for gamma rays. The apparatus uses nested masks, at least one of which rotates relative to the other.
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公开(公告)号：US20210199819A1
公开(公告)日：2021-07-01
申请号：US16756355
申请日：2018-10-22
发明人： David Boardman , Mathew Guenette , Alison Flynn , Adam Sarbutt , Lachlan Chartier , Jayden IIter , Dale Prokopovich , Geoff Watt
摘要： A mask for use in compressed sensing of incoming radiation, the mask comprising: a body formed of a material that modulates an intensity of incoming radiation of interest. The body has a plurality of mask aperture regions, each comprising at least one mask aperture that allows a higher transmission of the radiation relative to other portions of the respective mask aperture region, the relative transmission being sufficient to allow reconstruction of the compressed sensing measurements; the mask has one or more axes of rotational symmetry with respect to the mask aperture regions; the mask apertures have a shape that provides symmetry after a rotation about the one or more axes of rotational symmetry; and mutual coherence of a sensing matrix generated by the rotation of the respective mask aperture regions is less than one. An imaging system for compressed sensing of incoming radiation comprising such a mask is also provided.
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公开(公告)号：US11555935B2
公开(公告)日：2023-01-17
申请号：US16756355
申请日：2018-10-22
发明人： David Boardman , Mathew Guenette , Alison Flynn , Adam Sarbutt , Lachlan Chartier , Jayden Ilter , Dale Prokopovich , Geoff Watt
摘要： A mask for use in compressed sensing of incoming radiation includes a material that modulates an intensity of incoming radiation, a plurality of mask aperture regions, and one or more axes of rotational symmetry with respect to the mask aperture regions. Each mask aperture region includes at least one mask aperture that allows a higher transmission of the incoming radiation relative to other portions of the mask aperture region. The relative transmission sufficient to allow a reconstruction of compressed sensing measurements and has a shape that provides a symmetry under rotation about the one or more axes of rotational symmetry. A mutual coherence of a sensing matrix generated by a rotation of the plurality of mask aperture regions is less than one. An imaging system for compressed sensing of incoming radiation including such a mask is also provided.
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公开(公告)号：US10795036B2
公开(公告)日：2020-10-06
申请号：US15313101
申请日：2015-05-22
发明人： David Boardman , Adam Sarbutt , Alison Flynn , Dale Prokopovich
摘要： A coded mask apparatus is provided for gamma rays. The apparatus uses nested masks, at least one of which rotates relative to the other.
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