نتایج جستجو برای: contour maps

تعداد نتایج: 128767  

1998
Lilian Labelle Daniel Lauzon Janusz Konrad Eric Dubois

We propose a new method for the encoding of label images (also known as segmentation maps or alpha planes) that are often used to identify object location in region-based image and video coders. The method is contour-based and lossless with a contour model composed of two parts: a contour graph describing the topology of the contour network and a directional chain code to deal with the geometri...

Journal: :Monthly Notices of the Royal Astronomical Society 1983

Journal: :IEEE Trans. Pattern Anal. Mach. Intell. 1993
Chen-Chau Chu Jake K. Aggarwal

AbstructWe present an algorithm that integrates multiple region segmentation maps and edge maps. It operates independently of image sources and specific region-segmentation or edge-detection techniques. User-specified weights and the arbitrary mixing of regiodedge maps are allowed. The integration algorithm enables multiple edge detectionlregion segmentation modules to work in parallel as front...

Journal: :Pattern Recognition 2011
Ying Wang Dacheng Tao Xinbo Gao Xuelong Li Bin Wang

Mammographic mass segmentation plays an important role in computer-aided diagnosis systems. It is very challenging because masses are always of low contrast with ambiguous margins, connected with the normal tissues, and of various scales and complex shapes. To effectively detect true boundaries of mass regions, we propose a feature embedded vector-valued contour-based level set method with rela...

Journal: :Neurocomputing 2002
Remus Osan Bard Ermentrout

A new correlation-based model for ocular dominance and orientation selectivity columns is proposed. This model can be used to obtain realistic maps for either the ocular dominance maps or orientation selectivity maps. It can also be used to generate joint maps that take into account the extra requirements related to the singularities of the orientation selectivity map and the relative angles of...

2008
X. Yu S. Wang S. Dodd D-Y. Chen A. Koretsky

FP HP Nose Barrel Fig 1.Visualization of soma – totopic maps in the rat S1 cortex. S1 subdivisions of forepaw (FP, yellow), hindpaw (HP, green), barrel (Barrel, purple), and nose (Nose, red) are represented in 2D coronal t-maps (A) and 3D contour (B), which is in an excellent agreement with the somatotopic maps established by electrophysiology (inset) [4]. Functional MRI of Somatosensory Cortic...

Journal: :Synthesis 2022

Abstract Visualization of electron delocalization and aromaticity in some selected arynes, including nonplanar examples, their Diels–Alder or dimerization reactions was achieved through multidimensional isotropic magnetic shielding contour maps. These maps showed that arynes are generally less aromatic than the corresponding arenes, peaks during when approaching transition state.

Journal: :Physical biology 2016
Karen Alim Shahaf Armon Boris I Shraiman Arezki Boudaoud

Growth pattern dynamics lie at the heart of morphogenesis. Here, we investigate the growth of plant leaves. We compute the conformal transformation that maps the contour of a leaf at a given stage onto the contour of the same leaf at a later stage. Based on the mapping we predict the local displacement field in the leaf blade and find it to agree with the experimentally measured displacement fi...

Journal: :Engineering Letters 2008
C. K. Chan B. Stewart C. W. Leung

Contour Advection with Surgery (CAS) is used to simulate turbulent premixed combustion. This paper presents results from calculations of methane/air mixtures and ethylene/air mixtures with equivalence ratios ranging from 0.8 to 1.6 with different turbulence intensities. The positions, thicknesses and half-angles of the turbulent flame zones are compared for each case by plotting contour maps of...

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