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This paper proposes a saliency detection approach using multi-mapping based on global-local structural information. Firstly, a global-background-suppression(GBS) image and a Lab color space hybrid(CSH) image are obtained through different mapping rules. Secondly, both of them are segmented several times to produce multiple shape images. Thirdly, the above shape images are multiplied with GBS image...
Using numerical scattering simulation of the BART (bidirectional analytic ray tracing method), an angular sequence of high-resolution 2-D ISAR (inverse synthetic aperture radar) images of a space target is produced. The Kanade-Lucas-Tomasi (KLT) feature tracker is then adopted for extracting feature points and matching all angularly consecutive ISAR images. 3-D positions of those featured points can...
The magnetization reversal in notched elliptic Co rings is studied with micromagnetic simulations. The magnetization configurations show that the magnetization reversal processes are dominated by the formation, propagation, and annihilation of domain walls and localized vortexes. A sector notch aligned perpendicular to $H$ is favorable for the stable global vortex state with controllable chirality...
An iterative inverse algorithm of 2D Finite-Element Boundary-Integral (FE-BI) model is proposed for target profile reconstruction in near-field penetration sensing. It is based on the Jacobian matrix of measurements vs. unknown permittivity which can be explicitly derived from the FE-BI formulation. It uses synthetic aperture radar imaging result as an initial guess and confines the unknown region...
Here we report a pH-mediated hydrothermal reduction method that combined with moulding methods, realizing fabrication of ultrahigh density graphene macrostructures with various shapes. This ‘compact graphene’ (CG) has a compressive strength of 361 MPa (6 times higher than conventional graphite products) and an excellent electrical conductivity. The processing steps are scalable and may contribute...
A substantial proportion of current Internet videos are poor in quality. To improve the visual experience, many visual quality optimization algorithms, such as denoising, sharpening are usually used. However, the unsuitable denoising will blur the image, the oversharpening will result in overshoot artifacts. To resolve this problem, many methods have been proposed to adaptively adjust the parameters...
Blood vessel segmentation is an essential step of the diagnoses of various brain diseases. In this paper, we propose a novel method for segmentation of cerebral blood vessels from magnetic resonance angiography (MRA) images based on Gaussian Mixture Model and the SEM algorithm. First the MIP algorithm is applied to decrease the quantity of mixing elements. Then the Gaussian Mixture Model is put forward...
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