Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Changcheng Gong"'
Autor:
Changcheng Gong, Li Zeng
Publikováno v:
IEEE Access, Vol 8, Pp 70465-70476 (2020)
In some computed tomography (CT) applications, limited-angle projections are used for image reconstruction, and traditional reconstruction methods, such as filtered back-projection (FBP) or simultaneous algebraic reconstruction technique (SART), cann
Externí odkaz:
https://doaj.org/article/17e5c5db5e7942c7adab7a5dedf22465
Publikováno v:
IEEE Access, Vol 8, Pp 151878-151887 (2020)
For limited-angle computed tomography (CT) image reconstruction, the classical total variation (TV) based algorithms suffer from the limited-angle artifacts, because TV only used the gradient information of the image. The priori image constrained com
Externí odkaz:
https://doaj.org/article/aab93bb8ef9f4a3d87e5399ea044fce9
Autor:
Changcheng Gong, Jianxun Liu
Publikováno v:
Journal of X-ray science and technology.
Limited-angle computed tomography (CT) imaging is one of the common imaging problems. The reconstructed images often encounter obvious artifacts and structure degradation. In recent years, the recoverability prior of image structure has been widely e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8898f51bdc21b0df10a7cb780a9ad04e
https://pubmed.ncbi.nlm.nih.gov/36336947
https://pubmed.ncbi.nlm.nih.gov/36336947
Publikováno v:
Journal of X-ray science and technology. 30(6)
CT reconstruction from incomplete projection data is one of the key researches of X-ray CT imaging. The projection data acquired by few-view and limited-angle sampling are incomplete. In addition, few-view sampling often requires turning on and off t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6864c675b903b18c5ead3e1b1f869871
https://pubmed.ncbi.nlm.nih.gov/36031923
https://pubmed.ncbi.nlm.nih.gov/36031923
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 70:1-11
Spectral-computed tomography (CT) has been demonstrating its great advantages in lesion detection, tissue characterization, and material decomposition. However, the quality of images is often significantly corrupted with various noises, which brings
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dc7d9a12fafdbec43d85ab35480fa93
https://doi.org/10.1109/tim.2021.3078555
https://doi.org/10.1109/tim.2021.3078555
Publikováno v:
Medical & Biological Engineering & Computing. 58:2621-2629
In practical computed tomography (CT) applications, projections with low signal-to-noise ratio (SNR) are often encountered due to the reduction of radiation dose or device limitations. In these situations, classical reconstruction algorithms, like si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d05bce762f5e1b0cff17d2bb4d36bb5b
https://doi.org/10.1007/s11517-020-02246-1
https://doi.org/10.1007/s11517-020-02246-1
Autor:
Li Zeng, Changcheng Gong
Publikováno v:
IEEE Access, Vol 8, Pp 70465-70476 (2020)
In some computed tomography (CT) applications, limited-angle projections are used for image reconstruction, and traditional reconstruction methods, such as filtered back-projection (FBP) or simultaneous algebraic reconstruction technique (SART), cann
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2adf4d7cf5cd6e21c1f7e8166e4d5261
https://ieeexplore.ieee.org/document/9055373/
https://ieeexplore.ieee.org/document/9055373/
Publikováno v:
Journal of X-ray science and technology. 30(2)
In computed tomography (CT) image reconstruction problems, exterior CT is an important application in industrial non-destructive testing (NDT). Different from the limited-angle problem that misses part of the rotation angle, the rotation angle of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04ed2bc073d730843eb6e6a51c96b125
https://pubmed.ncbi.nlm.nih.gov/35095013
https://pubmed.ncbi.nlm.nih.gov/35095013
Autor:
Changcheng Gong, Li Zeng
Publikováno v:
Journal of X-ray science and technology. 29(6)
Limited-angle computed tomography (CT) may appear in restricted CT scans. Since the available projection data is incomplete, the images reconstructed by filtered back-projection (FBP) or algebraic reconstruction technique (ART) often encounter shadin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4b0c9318514ac39600df57d3706ca2a
https://pubmed.ncbi.nlm.nih.gov/34511479
https://pubmed.ncbi.nlm.nih.gov/34511479
Autor:
Changcheng Gong, Li Zeng
Publikováno v:
Signal Processing. 165:149-162
Low-intensity projections (high-level noise) may degrade computed tomography (CT) image quality in some applications. CT image reconstruction from projections with low intensity has therefore attracted attention from researchers, who aim to suppress
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d9c13d1bbe617a001f066b3803165ba
https://doi.org/10.1016/j.sigpro.2019.06.031
https://doi.org/10.1016/j.sigpro.2019.06.031