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• W3049279742 abstract "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 compressed sensing (PICCS) based reconstruction algorithms can reduce the limited-angle artifacts by using a priori image consistent with the target image. However, it is difficult to ensure the consistency of priori image and target image in practice. In order to reconstruct high quality image when the prior image is inconsistent with the target image, we proposed a guided image filter reconstruction based on TV and prior image (TVPI-G). In each iteration phase, our algorithm first performs a TV step (include simultaneous algebra reconstruction technique (SART) and TV) to get initiatory reconstruction image; Then, the results of TV iteration are combined with prior images to form an intermediate result; Finally, we use the guided image filter to modify the intermediate results with the TV result as the guide image. Numerical reconstruction results on simulation phantom with different intensities Poisson noise illustrates that our proposed TVPI-G algorithm is better than other comparison algorithms in both qualitative and quantitative aspects, including TV, PICCS, and SART guided image filtering." @default.
• W3049279742 created "2020-08-21" @default.
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• W3049279742 date "2020-01-01" @default.
• W3049279742 modified "2023-10-09" @default.
• W3049279742 title "Guided Image Filtering Reconstruction Based on Total Variation and Prior Image for Limited-Angle CT" @default.
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• W3049279742 doi "https://doi.org/10.1109/access.2020.3016332" @default.
• W3049279742 hasPublicationYear "2020" @default.
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