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Dual-atria rotor modification: A comparative analysis of rotor modification and posterior wall isolation in patients with persistent and long-standing persistent atrial fibrillation. [PDF]
Heart Rhythm O2Okano Y +10 more
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The Ultimate Image Singularities for External Ellipsoidal Harmonics
SIAM Journal on Applied Mathematics, 1974The image system of singularities of an arbitrary exterior potential field within a triaxial ellipsoid is derived. It is found that the image system consists of a source and doublet distribution over the fundamental ellipsoid. The present contribution is a generalization of previous theories on the image system of an exterior potential field within a ...
Touvia Miloh
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A topological variational model for image singularities
Proceedings. International Conference on Image Processing, 2002Image singularities are prominent landmarks and their detection, recognition, and classification is a crucial step in image processing and computer vision. Such singularities carry important information for further operations, such as image registration, shape analysis, motion estimation, and object recognition.
A. Hamza, H. Krim
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Description of Local Singularities for Image Registration
18th International Conference on Pattern Recognition (ICPR'06), 2006Recently, it has been shown that gradient-based meth- ods are the most powerful approaches for describing the lo- cal content of digital images in the neighborhood of salient points. In practice, salient points are always located on image singularities whatever the detector used. In this pa- per, we show that a more efficient mathematical notion can be
Julien Ros, Christophe Laurent
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IMAGE SINGULARITIES OF GREEN'S FUNCTIONS FOR ANISOTROPIC ELASTIC HALF-SPACES AND BIMATERIALS
Quarterly Journal of Mechanics and Applied Mathematics, 1992T C T Ting, Ting T C T
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Observations of orbiting hot spots around naked singularities
Journal of Cosmology and Astroparticle Physics, 2023Recently, it has been reported that photons can traverse naked singularities in the Janis-Newman-Winicour and Born-Infeld spacetimes when these singularities are appropriately regularized.
Yiqian Chen, P. Wang, Haitang Yang
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Singular value features of images
SPIE Proceedings, 2000This paper presents the preliminary results of our investigation on using singular value decomposition transform to extract effective image features. It proposes using the singular values of subimages to discriminate different classes of imagery.
Jingxin Zhang 0001 +4 more
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Image deblocking by singularity detection
Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98 (Cat. No.98CH36181), 2002The blocking effect is considered as the most disturbing artifact of JPEG decoded images. Many researchers have suggested various methods to tackle this problem. The wavelet transform modulus maxima (WTMM) approach was proposed which gives a significant improvement over the previous methods in terms of the signal-to-noise ratio and visual quality ...
Tai-Chiu Hsung, Daniel Pak-Kong Lun
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Image processing using singularities and wavelets
2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221), 2002The paper develops a singularity image model as an alternative to linear models for processing many complicated but important images. The model is effective because it provides image characterization, image decomposition, and image reconstruction. For a given measure, one can nonlinearly transform an image into a singularity domain, where each pixel ...
Armein Z. R. Langi, Witold Kinsner
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