نتایج جستجو برای: local radon transform

تعداد نتایج: 644278  

Journal: :Pattern Recognition 2005
Cris L. Luengo Hendriks Michael van Ginkel Piet W. Verbeek Lucas J. van Vliet

The generalized Radon (or Hough) transform is a well-known tool for detecting parameterized shapes in an image. The Radon transform is a mapping between the image space and a parameter space. The coordinates of a point in the latter correspond to the parameters of a shape in the image. The amplitude at that point corresponds to the amount of evidence for that shape. In this paper we discuss thr...

Journal: :Pattern Recognition 2013
Ajay Kumar Tak-Shing Chan

Abstract: Automated personal identification using localized ear images has wide range of civilian and law-enforcement applications. This paper investigates a new approach for more accurate ear recognition and verification problem using the sparse representation of local graylevel orientations. We exploit the computational simplicity of localized Radon transform for the robust ear shape represen...

2007
Can Evren Yarman Birsen Yazıcı Margaret Cheney B. Yazıcı

This paper presents a new method for the exponential Radon transform inversion based on the harmonic analysis of the Euclidean motion group of the plane. The proposed inversion method is based on the observation that the exponential Radon transform can be modified to obtain a new transform, defined as the modified exponential Radon transform, that can be expressed as a convolution on the Euclid...

2008
MAARTEN V. DE HOOP GUNTHER UHLMANN ROBERT D. VAN DER HILST

A key challenge in the seismic imaging of reflectors using surface reflection data is the subsurface illumination produced by a given data set and for a given complexity of the background model (of wavespeeds). The imaging is described here by the generalized Radon transform. To address the illumination challenge and enable (accurate) local parameter estimation, we develop a method for partial ...

Journal: :CoRR 2016
M. Amin Khorsandi Nader Karimi Shadrokh Samavi

Radon transform is a type of transform which is used in image processing to transfer the image into intercept-slope coordinate. Its diagonal properties made it appropriate for some applications which need processes in different degrees. Radon transform computation needs a lot of arithmetic operations which makes it a compute-intensive algorithm. In literature an approximate algorithm for comput...

2001
Tatsuhiko Tsuboi Akihiro Masubuchi Shinichi Hirai Shinya Yamamoto Kazuhiko Ohnishi Suguru Arimoto

A new approach to the detection of the position and the orientation of planar motion objects based on onesided Radon transform is presented. Detection of position and orientation of planar motion objects is a key to advanced object handling. First, one-sided Radon transform is introduced and its properties are investigated. Second, algorithms to detect planar motion of objects are constructed b...

2008
Benoît RECUR Pascal DESBARATS Jean-Philippe DOMENGER

In medical imaging, the Radon transform, used for tomographic reconstruction, recovers a N-Dimensional image from a set of acquired (N-1)D projections. However, it implies approximations in discrete domain. Beside this transform, Mojette transform has been developped as a discrete and exact transform. However, its construction is incompatible with physical X-Rays properties. In this paper, afte...

Journal: :Proceedings of the Japan Academy, Series A, Mathematical Sciences 1995

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