Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Heemoon Cho"'
Autor:
Heemoon Cho, Youngjin Lee
Publikováno v:
Results in Physics, Vol 10, Iss , Pp 348-352 (2018)
Over the past years, many studies have evaluated the performance of nondestructive testing high-energy X-ray imaging methods. In these high-energy industrial X-ray imaging systems, the noise is very important when accurately assessing the nondestruct
Externí odkaz:
https://doaj.org/article/e3c817f0b67d472baa32278bd3b7f184
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 925:212-216
High-energy industrial X-ray imaging systems are widely used in the field of nondestructive testing for the detection of defects in mechanical material. To improve the defect detection ratio, it is highly important to reduce the amount of noise in th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c60797f90f7b2a34a73cb5296e07d7fe
https://doi.org/10.1016/j.nima.2019.01.060
https://doi.org/10.1016/j.nima.2019.01.060
Autor:
Youngjin Lee, Heemoon Cho
Publikováno v:
Results in Physics, Vol 10, Iss, Pp 348-352 (2018)
Over the past years, many studies have evaluated the performance of nondestructive testing high-energy X-ray imaging methods. In these high-energy industrial X-ray imaging systems, the noise is very important when accurately assessing the nondestruct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e65d4b6d11011b2d7f4b8a03689853ec
https://doi.org/10.1016/j.rinp.2018.06.036
https://doi.org/10.1016/j.rinp.2018.06.036
Autor:
Sungil Choi, Soyoung Park, Heemoon Cho, Yeonok Park, Taeho Woo, Hyunwoo Lim, Kyuseok Kim, Hyosung Cho, Uikyu Je, Chulkyu Park
Publikováno v:
Radiation Physics and Chemistry. 127:147-154
In this work, we investigated a compressed-sensing (CS)-based deblurring scheme incorporated with the total-variation (TV) regularization penalty for image deblurring of high accuracy and adopted it into the image reconstruction in conventional digit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95b0d6da66cf625a5dc78489ef2ddd4d
https://doi.org/10.1016/j.radphyschem.2016.06.025
https://doi.org/10.1016/j.radphyschem.2016.06.025
Autor:
Daeki Hong, Heemoon Cho, Hyosung Cho, Sungil Choi, Uikyu Je, Yeonok Park, Chulkyu Park, Hyunwoo Lim, Kyuseok Kim, Soyoung Park, Taeho Woo
Publikováno v:
Journal of Medical Imaging and Health Informatics. 5:1952-1957
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa898cfe185c52793a466d986e03f019
https://doi.org/10.1166/jmihi.2015.1676
https://doi.org/10.1166/jmihi.2015.1676
Autor:
Heemoon Cho, Taeho Woo, Soyoung Park, Sungil Choi, Hyunwoo Lim, Yeonok Park, Hyosung Cho, Chulkyu Park, Dae-Ki Hong, Uikyu Je
Publikováno v:
Optics Communications. 355:492-497
In this work, we performed a feasibility study on the three-dimensional (3D) image reconstruction in a truncated Archimedean-like spiral geometry with a long-rectangular detector for application to high-accurate, cost-effective dental x-ray imaging.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12942a67823bc39d37577ccf8c54224d
https://doi.org/10.1016/j.optcom.2015.07.018
https://doi.org/10.1016/j.optcom.2015.07.018
Autor:
Yeonok Park, Sungil Choi, Dae-Ki Hong, Yangseo Koo, Hyosung Cho, Minsik Lee, C.K. Park, Uikyu Je, Heemoon Cho
Publikováno v:
Journal of the Korean Physical Society. 65:1468-1474
In iterative methods for cone-beam computed tomography (CBCT) reconstruction, the use of a huge system matrix is the primary computational bottleneck and is still an obstacle to the more widespread use of these methods in practice. In this paper, to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6af36e5f0b7f61a4a7a1f45c3fa7c2ff
https://doi.org/10.3938/jkps.65.1468
https://doi.org/10.3938/jkps.65.1468
Autor:
Yangseo Koo, Yeonok Park, Chulkyu Park, Heemoon Cho, Sungil Choi, Dae-Ki Hong, Minsik Lee, Uikyu Je, Hyosung Cho
Publikováno v:
Journal of the Korean Physical Society. 65:1128-1133
We propose a new voxellation scheme for iterative cone-beam computed tomography (CBCT) reconstruction with less computational cost. Here, the voxel configuration is designed with an isosceles-triangle shape by using polar coordinates, exploiting the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b9d33c2a96645ce67f24a70c10a8d65
https://doi.org/10.3938/jkps.65.1128
https://doi.org/10.3938/jkps.65.1128
Autor:
Minsik Lee, Yangseo Koo, Chulkyu Park, Heemoon Cho, Dae-Ki Hong, Uikyu Je, Yeonok Park, Hyosung Cho, Sungil Choi
Publikováno v:
Journal of the Korean Physical Society. 65:763-769
Digital breast tomosynthesis (DBT) is considered in clinics as a standard three-dimensional imaging modality, allowing the earlier detection of cancer. It typically acquires only 10–30 projections over a limited angle range of 15–60° with a stat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::800281a735c9214982221de28f8f6df6
https://doi.org/10.3938/jkps.65.763
https://doi.org/10.3938/jkps.65.763
Autor:
Yeonok Park, Hyosung Cho, Sungil Choi, Yangseo Koo, Chulkyu Park, Minsik Lee, Uikyu Je, Heemoon Cho, Dae-Ki Hong
Publikováno v:
Journal of the Korean Physical Society. 65:565-571
In practical applications of three-dimensional (3D) tomographic techniques, such as digital breast tomosynthesis (DBT), computed tomography (CT), etc., there are often challenges for accurate image reconstruction from incomplete data. In DBT, in part
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b8b9916fa3787ca8f3888b1a3493e04
https://doi.org/10.3938/jkps.65.565
https://doi.org/10.3938/jkps.65.565