نتایج جستجو برای: total variation

تعداد نتایج: 1063337  

Journal: :SIAM Journal on Imaging Sciences 2018

Journal: :Mathematics 2021

This paper provides several error estimations for total variation (TV) type regularization, which arises in a series of areas, instance, signal and imaging processing, machine learning, etc. In this paper, some basic properties the minimizer TV regularization problem such as stability, consistency convergence rate are fully investigated. Both priori posteriori rules considered paper. Furthermor...

Ningyu Huang, Qiqun Cheng,

Esox lucius is an economically important freshwater species. Mitochondrial cytb, 12SrRNA, and 16SrRNA gene sequences were used in order to clarify the genetic variation and population structure in three E. Lucius populations, i.e., one Wild population (W) and two hatchery populations (Hatchery Population I-HPI and Hatchery Population II-HPII). A total of 55 individuals, with 19 from wild and 1...

Journal: :Proceedings of the American Mathematical Society 1953

Ningyu Huang Qiqun Cheng,

Esox lucius is an economically important freshwater species. Mitochondrial cytb, 12SrRNA, and 16SrRNA gene sequences were used in order to clarify the genetic variation and population structure in three E. Lucius populations, i.e., one Wild population (W) and two hatchery populations (Hatchery Population I-HPI and Hatchery Population II-HPII). A total of 55 individuals, with 19 from wild and 1...

2011
Alex Sawatzky Martin Burger

This thesis deals with the reconstruction of images where the measured data are corrupted by Poisson noise and a specific signal-dependent speckle noise, which occurs e.g. in medical ultrasound images. Since both noise types fundamentally differ from the frequently studied additive Gaussian noise in mathematical image processing, adapted variational models are required to handle these types of ...

1995
Curtis R. Vogel Mary Ellen Oman

We apply a total variation minimization technique for two tasks in image processing: denoising, which is the reconstruction of an image from noisy observations of the image; and deblurring, which is the reconstruction of an image which is convolved with a smooth kernel function and then contaminated with error. Total Variation minimization yields a nonlinear elliptic partial diierential equatio...

2005
T J Asaki

Abstract In the case of radiography of a cylindrically symmetric object, the Abel transform is useful for describing the tomographic measurement operator. The inverse of this operator is unbounded, so regularization is required for the computation of satisfactory inversions. We introduce the use of the total variation seminorm for this purpose, and prove the existence and uniqueness of solution...

2008
Frank Crosby Haomin Zhou

New imaging capabilities have given rise to higher dimensional image processing. This paper presents a generalization of total variation (TV) based denoising with specific application to three-dimensional flash lidar imagery. The generalization uses a weighted norm, rather than the standard Euclidian measure, that accounts for sampling differences that may exist along different axes. We compare...

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