Muon tomography imaging improvement using optimized limited angle data
First Claim
1. A method for generating charged particle tomography images for a volume of interest (VOI) by a charged particle tomography system, the method comprising:
- collecting raw track data of tracks of cosmic-ray based charged particles passing through the VOI;
grouping the collected raw track data into subsets of the tracks based on angular distribution of the tracks in a zenith direction in the raw track data by partitioning the collected raw track data into a first subset corresponding to large zenith angles and a second subset corresponding to small zenith angles;
generating a set of images of the VOI based on the grouped subsets of the tracks; and
combining information from at least the generated set of images to obtain an resulting image of the VOI.
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Abstract
Disclosed technology can provide a process for generating reconstructed muon image resolution to optimize the use of the limited angular range muon track data collected by a muon tomography system. In one aspect, a process for improving reconstructed muon image resolution for a volume of interest (VOI) imaged by a muon tomography system includes: collecting raw muon track data of cosmic ray muon tracks passing through the VOI; grouping the raw muon track data into two or more subsets of tracks based on at least one angular distribution of the muon tracks in the raw muon track data; generating a set of images of the VOI based on the two or more subsets of tracks; and combining information from the set of reconstructed images and a reconstructed image based on the full set of the raw muon track data to obtain a resulting reconstructed image of the VOI.
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Citations
20 Claims
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1. A method for generating charged particle tomography images for a volume of interest (VOI) by a charged particle tomography system, the method comprising:
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collecting raw track data of tracks of cosmic-ray based charged particles passing through the VOI; grouping the collected raw track data into subsets of the tracks based on angular distribution of the tracks in a zenith direction in the raw track data by partitioning the collected raw track data into a first subset corresponding to large zenith angles and a second subset corresponding to small zenith angles; generating a set of images of the VOI based on the grouped subsets of the tracks; and combining information from at least the generated set of images to obtain an resulting image of the VOI. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for generating charged particle tomography image for a volume of interest (VOI) by a charged particle tomography system, the method comprising:
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collecting raw track data of tracks of cosmic-ray charged particles passing through the VOI; generating an image of the VOI based on the raw track data; identifying an orientation of objects in the generated image of the VOI based on the raw track data; grouping the raw track data into subsets of the tracks based on the identified orientation, wherein grouping the raw track data into the subsets of the tracks includes partitioning the raw track data into a first subset corresponding to large zenith angles and a second subset corresponding to small zenith angles; generating a set of images of the VOI based on the subsets of the tracks; and combining information from the generated set of images of the VOI based on the subsets of the tracks and the generated image based on the full set of the track data to obtain a resulting image of the VOI associated with a resolution along the identified orientation. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification