Monotonic algorithms for transmission tomography
نویسندگان
چکیده
منابع مشابه
Fast Monotonic Algorithms for Transmission Tomography
We present a framework for designing fast and monotonic algorithms for transmission tomography penalized-likelihood image reconstruction. The new algorithms are based on paraboloidal surrogate functions for the log-likelihood. Due to the form of the log-likelihood function, it is possible to find low curvature surrogate functions that guarantee monotonicity. Unlike previous methods, the propose...
متن کاملAccelerated Monotonic Algorithms for Transmission Tomography
We present a framework for designing fast and monotonic algorithms for transmission tomography penalizedlikelihood image reconstruction. The new algorithms are based on paraboloidal surrogate functions for the loglikelihood. Due to the form of the log-likelihood function, it is possible to find low curvature surrogate functions that guarantee monotonicity. Unlike previous methods, the proposed ...
متن کاملAccelerated Monotonic Algorithms for Transmission Tomography - Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on
We present a framework for designing fast and monotonic algorithms for transmission tomography penalizedlikelihood image reconstruction. The new algorithms are based on paraboloidal surrogate functions for the loglikelihood. Due to the form of the log-likelihood function, it is possible to find low curvature surrogate functions that guarantee monotonicity. Unlike previous methods, the proposed ...
متن کاملOrdered subsets algorithms for transmission tomography.
The ordered subsets EM (OSEM) algorithm has enjoyed considerable interest for emission image reconstruction due to its acceleration of the original EM algorithm and ease of programming. The transmission EM reconstruction algorithm converges very slowly and is not used in practice. In this paper, we introduce a simultaneous update algorithm called separable paraboloidal surrogates (SPS) that con...
متن کاملAnalysis of Algorithms for Monotonic and Non-Monotonic Reasoning
i Preface Logic has always provided a rigorous foundation for mathematics and philosophy, and more recently it has been called upon to support formal concepts and problem-solving mechanisms for computer science, operations research, and artificial intelligence. Recent work emphasizes that, in addition to traditional concerns such as soundness and completeness of proof systems, it is important t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Medical Imaging
سال: 1999
ISSN: 0278-0062
DOI: 10.1109/42.802758