Contour lines totally fix the structure of leftcontinuous t-norms. For each t-norm, these contour lines are determined by the corresponding residual implicator. Most properties involving residual implicators can now easily be translated into properties involving contour lines. As the portation law expresses associativity, we dispose of a powerful tool for constructing left-continuous t-norms. I...

Contour line extraction from a topographical map is an integral part of Geographical Information System. Traditional technique for contour line extraction include manual digitization, this is a time consuming, tedious and a costly process. In addition the effectiveness of the result highly relies on the ability and skill of the researcher responsible for the same. To aid research initiatives th...

A computational study has been performed on a series of 55 compounds having (S)-N-(3-(N-(cyclopen-tylmethyl) substituted-phenylsulfonamido)-2-hydroxypropyl) acetamide backbone as HIV-1 protease inhibitors. Various combinations of these specific inhibitors fragments were formed by breaking them at central alicyclic single bonds, while retaining the core. Standard Topomer 3D models were automatic...

Neural maps have been recently proposed as an alternative method for mobile robot path planning (Glasius, Komoda, and Gielen 1995). However, these proposals are mostly theoretical and are primarily concerned with biological plausibility. Our purpose is to investigate their applicability on real robots. Information about the environment is mapped on a topologically ordered neural population. The...

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In a recent paper, Fujita and co-workers report image can be interpreted as a picture of the LDOS on the observation of the two-dimensional (2D) at the Fermi level (EF) and, consequently, standing Fermi contour of the s–p derived surface state on waves with wave vector q=2kF are visible in such the reconstructed Au(111) surface [1]. This is images. A 2D Fourier transform of a standing done by F...

This paper presents the application of two different active contour models for the segmentation of highresolution TerraSAR-X data. Both methods facilitate the detection of land-water-boundaries in semi-automated procedures and can be used to delineate flood extent and to map open water surfaces in general. For the extraction of smooth water bodies amplitude thresholding approaches are quite com...

In this study, contours of a brain tumor on a single slice tomography image were derived by using image correlation technique. Four different methods were used to compare the validity of the derived contours. Contour map of the brain tumor was generated by using 2D image correlation technique with raw pixel , perceived brightness (luminance), optical density and Relative radiation dose data. Th...

Speckle and low contrast make ultrasound image segmentation a difficult task. This paper presents an original robust active contour energy and the corresponding quasi-automatic initialization. Both are based on the coefficient of variation gradient vector fl ow. Our approach combines anisotropic diffusion with the gradient vector fl ow field. The gradient vector fl ow is calculated from a map o...