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168
Snakes: Active contour models
- INTERNATIONAL JOURNAL OF COMPUTER VISION
, 1988
"... A snake is an energy-minimizing spline guided by external constraint forces and influenced by image forces that pull it toward features such as lines and edges. Snakes are active contour models: they lock onto nearby edges, localizing them accurately. Scale-space continuation can be used to enlarge ..."
Abstract
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Cited by 3951 (17 self)
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the cap-ture region surrounding a feature. Snakes provide a unified account of a number of visual problems, in-cluding detection of edges, lines, and subjective contours; motion tracking; and stereo matching. We have used snakes successfully for interactive interpretation, in which user-imposed constraint
A High Current Injector for the Proposed SLAC Linear Collider
- IEEE Trans. Nucl. Sci
, 1981
"... A new, high-current injector has been designed to yield the 7.5x1010e- per S-band bunch necessary for the proposed linear co1lider.l The injector consists of two prebunchers at the 16th subharmonic, a 0.75 c traveling wave buncher, and a three-meter velocity of light traveling wave structure. The e- ..."
Abstract
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Cited by 7 (6 self)
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- beam is confined by a solonoidal magnetic field in the buncher and cap-ture regions. A computer simulation similar to that used by Mavrogenes et al., ' has been used to calculate the bunching. The calculation indicates it is possible to achieve "lx 101le- in 16O of S-band from a 15 amp gun
Biological and Ecological features of Procambarus clarkii in Lake
"... In 1999 Procambarus clarkii (Girard, 1852) was not reported for the Umbrian region (Central Italy) even if in the last 15 years fishermen of lake Trasimeno registered isolated cases of cap-ture, considering this species as extremely rare. From the be- ..."
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In 1999 Procambarus clarkii (Girard, 1852) was not reported for the Umbrian region (Central Italy) even if in the last 15 years fishermen of lake Trasimeno registered isolated cases of cap-ture, considering this species as extremely rare. From the be-
Regional convergence in productivity and productive structure: The Spanish case
- International Regional Science Review
, 1999
"... This article analyzes the evolution of regional differences in Spain and emphasizes the impor-tance of a disaggregate analysis at a sectoral level. In particular, the authors observe conver-gence in productivity at the aggregate regional level but not at the sectoral level. Aggregate con-vergence se ..."
Abstract
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Cited by 14 (0 self)
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-effects model. The results show the importance of regional specificity captured by the fixed effects and have implications that are very different from those of beta con-vergence analyses with cross-section data. The convergence hypothesis has received considerable attention in the recent litera-ture. Many
Structure-Preserving Image Smoothing via Region Covariances
"... Input image Structure component Texture component Figure 1: Our approach makes use of region covariances in decomposing an image into coarse and fine components. The coarse component correspond to prominent structures beneath the image, whereas the fine component only includes texture. Our smoothing ..."
Abstract
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Cited by 4 (0 self)
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smoothing ap-proach which depends on covariance matrices of simple image fea-tures, aka the region covariances. The use of second order statistics as a patch descriptor allows us to implicitly capture local struc-ture and texture information and makes our approach particularly effective for structure
© Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License. Atmospheric Chemistry and Physics Source regions of some persistent organic pollutants measured in
, 2009
"... Abstract. A key feature of POPs (Persistent Organic Pollu-tants) is their potential for long-range atmospheric transport. In order to better understand and predict atmospheric source-receptor relationships of POPs, we have modified an existing Lagrangian transport model (FLEXPART) to include some of ..."
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Norway. The model overestimates measured PCB-28 and γ-HCH concentrations by factors of 2 and 8, re-spectively, which is most likely because the emissions used as input to the model are overestimated. FLEXPART cap-tures the temporal variability in the measurements very well
An optimal location management scheme for minimizing signaling cost
- in Mobile IP,” IEEE International Conference on Communications (ICC
, 2002
"... AbstractMobile IP is a solution for mobility on the global In-ternet. However, it does not extend well to highly mobile users. Mobile IP regional registration is proposed to reduce the number of location updates to the home network, and reduce the signaling delay. This paper introduces an optimal re ..."
Abstract
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Cited by 10 (1 self)
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regional location manage-ment mechanism for Mobile IP that results in the minimum signal-ing cost. A novel discrete analytical model is developed which cap-tures the mobility and packet arrival pattern of a mobile terminal. This model does not impose any restrictions on the shape and the geographic
Two-Unicast Wireless Networks: Characterizing the Degrees-of-Freedom
, 2012
"... We consider two-source two-destination (i.e., two-unicast) multi-hop wireless networks that have a layered struc-ture with arbitrary connectivity. We show that, if the channel gains are chosen independently according to continuous distribu-tions, then, with probability 1, two-unicast layered Gaussi ..."
Abstract
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Cited by 33 (9 self)
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We consider two-source two-destination (i.e., two-unicast) multi-hop wireless networks that have a layered struc-ture with arbitrary connectivity. We show that, if the channel gains are chosen independently according to continuous distribu-tions, then, with probability 1, two-unicast layered
Filament enhancement by non-linear volumetric filtering using clustering-based connectivity
- in Proc. Int. Workshop Intell. Comput. Pattern
"... Abstract. Shape filters are a family of connected morphological operators that have been used for filament enhancement in biomedical imaging. They interact with connected image regions rather than individual pixels, which can either be removed or retained unmodified. This prevents edge distortion an ..."
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Cited by 1 (1 self)
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and noise ampli-fication, a property particularly appreciated in filtering and segmentation. In this paper we investigate their performance using a generalized notion of connectivity that is referred to as ”clustering-based connectivity”. We show that we can cap-ture thin fragmented structures which
V.: Multi-level background initialization using hidden markov models
- In: First ACM SIGMM international workshop on Video surveillance, IWVS ’03
, 2003
"... Most of the automated video-surveillance applications are based on the process of background modelling, aimed at discriminating motion patterns of interest at pixel, region or frame level in a nearly static scene. The issues character-izing an ordinary background modelling process are typically thre ..."
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Cited by 9 (3 self)
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-jects are present, the output is a pixel- and region-level sta-tistical background model describing the static information of a scene. At the pixel level, multiple hypotheses of the background values are generated by modelling the intensity of each pixel with a Hidden Markov Model (HMM), also cap-turing
Results 1 - 10
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168
