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Скачать с ютуб DIP Lecture 18: Reconstruction from parallel projections and the Radon transform в хорошем качестве

DIP Lecture 18: Reconstruction from parallel projections and the Radon transform 9 лет назад


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DIP Lecture 18: Reconstruction from parallel projections and the Radon transform

ECSE-4540 Intro to Digital Image Processing Rich Radke, Rensselaer Polytechnic Institute Lecture 18: Reconstruction from parallel projections and the Radon transform (4/13/15) 0:00:07 Introduction to image reconstruction from projections 0:01:05 CT scan geometries 0:04:31 Parallel-beam projections 0:06:48 The idea of backprojection 0:08:20 Matlab example of projection and backprojection 0:14:22 Why is backprojection suboptimal? 0:16:36 Geometry and notation of projections 0:20:33 The Radon transform 0:23:26 The sinogram 0:26:50 Mathematics of backprojection 0:30:16 Adding up backprojections 0:31:57 The Fourier-Slice theorem 0:38:48 The idea of the theorem 0:41:45 Why the sum of backprojections is fuzzy (oversampling low frequencies) 0:44:16 Filtered backprojection 0:53:13 Summarizing the overall algorithm 0:56:29 Matlab FBP example 1:01:54 FBP in the spatial domain 1:05:02 Practical notes Follows Section 5.11 of the textbook (Gonzalez and Woods, 3rd ed.).

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