【摘 要】
：
Signal and image restoration problems are often solved by minimizing a cost functionconsisting of an ■_2 data-fidelity term and a regularization term.We consider a class ofconvex and edge-preserving r
【出 处】
：
Journal of Computational Mathematics
论文部分内容阅读
Signal and image restoration problems are often solved by minimizing a cost functionconsisting of an ■_2 data-fidelity term and a regularization term.We consider a class ofconvex and edge-preserving regularization functions.In specific,half-quadratic
其他文献
In order to improve the quality of remote sensing image fusion,a new method combining nonsubsampled Laplacian pyramid (NLP)and bidimensional empirical mode decomposition(BEMD)is proposed.First,the hig
A real-time algorithm for constructing contour maps from grid DEM data is pre-sented.It runs completely within the programmable 3D visualization pipeline.The interpolation is paralleled by rasterizer
Liver hydatid disease is a common parasitic disease in farm and pastoral areas, which seriously influences peoples health. Based on CT imaging features of this disease, an iterative approach for liver
A visual engine is the core of a Digital Earth system.There is a wide variety of functional requirements in Digital Earth system and different requirements correspond to different operations.Based on
Semi-Supervised Classification (SSC),which makes use of both labeled and unlabeled data to determine classification borders in feature space,has great advantages in extracting classification informati
Landuse and land cover change is regarded as a good indicator that represents the impact of human activities on earth’s environment.When the large collection of multi-temporal satellite images has bec
A control-based full state observer scheme is explored for video target tracking application, and is enhanced with a lowpass filter for improving the tracking precision, thus forming an Enhanced Full
In this paper, we present a novel region-based active contour model based on global in-tensity fitting energy in a variational level set framework. Meanwhile, an internal energy term is in-troduced, a
针对最大互信息图像配准的不足,将遗传算法和最大互信息相结合提出了一种改进的PV插值方法,用二阶B样条函数取代传统PV插值法的核函数,将某点对联合直方图的影响从4个邻域点扩展到9个。在优化互信息函数的时候采用了改进的遗传算法,自适应的调整进化过程中的交叉概率和变异概率,并采用精英选择策略有效保留适应度高的个体。实验结果表明,改进方法配准的最大互信息值为1.1005,高于改进前的标准方法,改进方法的配
如何在恶劣天气条件下还原原始图像是目前视频图像增强技术中的主要课题。本文通过比较多尺度Retinex图像增强算法与双向直方图均衡增强算法,并结合在恶劣天气(如雾、雨等)下仿真实验的结果加以说明,从而得出两种算法在实际应用中的优缺点。