Unmatched back projector
WebDec 30, 2024 · This work presents an iterative image reconstruction framework for linear CT problems that allows for the use of unmatched back-projector/projector pairs in a … WebOct 4, 2024 · Unmatched pairs of forward and back projectors are common in X-ray CT computations for large-scale problems; they are caused by the need for fast algorithms …
Unmatched back projector
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WebUnmatched pairs of forward and back projectors are common in X-ray CT computations for large-scale problems; they are caused by the need for fast algorithms that best utilize the computer hardware, and it is an interesting and challenging task to develop fast and easy-to-use algorithms for these cases. http://people.compute.dtu.dk/pcha/Talks/NMSC21.pdf
WebWe applied an unmatched back projector based deconvolution algorithm to reduce image reconstruction time in light field microscopy. 3D laser written microstructures were … WebApr 11, 2024 · A projector can be represented as a matrix A. A matched backprojector is the transpose matrix AT. In other words, the matched backprojector is the adjoint operator of the projector. An example of matched projector/backprojector pair is the distance-driven pair [ 1, 2 ]. Almost all iterative algorithms are derived by assuming a matched projector ...
WebDec 7, 2024 · DOI: 10.1117/12.2615671 Corpus ID: 245052363; Unmatched back projector deconvolution for a miniature light field microscope … WebSep 1, 2024 · GMRES Methods for Tomographic Reconstruction with an Unmatched Back Projector. P. Hansen, K. Hayami, K. Morikuni; Computer Science. J. Comput. Appl. Math. 2024; 4. PDF. ... Golub-Kahan-based hybrid projection methods that can exploit compression and recycling techniques in order to solve a broad class of inverse problems where …
WebOct 31, 2024 · The ground truth consisted of deconvolving the registered input using a spatially varying PSF and the Wiener–Butterworth unmatched back projector 8 with two iterations (Extended Data Fig. 4g).
WebGMRES methods for tomographic reconstruction with an unmatched back projector Hansen, Per Christian; Hayami, Ken; Morikuni, Keiichi Published in: Journal of Computational and Applied Mathematics Link to article, DOI: 10.1016/j.cam.2024.114352 Publication date: 2024 Document Version Publisher's PDF, also known as Version of record Link back to ... fleetwood rocky mount vaWebNMSC21 GMRES and Unmatched Projectors P. C. Hansen5/18 “Fix” aStationaryIterativeMethod UnmatchedpairfromASTRA softwarepackage,imagehas64 64pixels, ... GMRES Methods for Tomographic Reconstruction with an Unmatched Back Projector Author: Per Christian Hansen Created Date: chefs spice crosswordWebJul 1, 2010 · Quantitative analysis and comparison between the iterative and the conventional filtered back-projection reconstruction algorithm was performed using a sandstone rock sample with and without liquid phases in the pore space. ... Counter examples for unmatched projector/backprojector in an iterative algorithm. 2024, ... chefs south floridaWebJun 29, 2024 · First, we show that an ‘unmatched back projector’ accelerates deconvolution relative to the classic Richardson–Lucy algorithm by at least tenfold. Second, three-dimensional image-based registration with a graphics processing unit enhances processing speed 10- to 100-fold over CPU processing. chefs spiceologyWebMay 1, 2000 · This paper also investigates the effects when unmatched projector/backprojector pairs are used. Free full text . IEEE Trans Med Imaging. Author manuscript; available in PMC 2024 Feb 8. ... In an iterative reconstruction algorithm, a projector/back-projector pair that models the imaging geometry and physics is an … chefssnackWebJul 1, 2010 · Quantitative analysis and comparison between the iterative and the conventional filtered back-projection reconstruction algorithm was performed using a … chefs spencerport nyWebJul 1, 2010 · In the following study, the most used forward and back projection methods were implemented and investigated: (1) pixel-driven and its interpolated version using sub-pixels [10], [11], [12], (2) projection based upon square pixel [13], (3) projection based upon circular pixel which is a pixel of circular shape and with constant value inside and with … chefs special