摘要翻译:
极化合成孔径雷达(PolSAR)作为一种远距离成像方法已取得了突出的地位。然而,由于在数据采集过程中采用相干光照,使得PolSAR图像受到斑点噪声的污染。这种噪声为图像提供了一个粒度方面,使其处理和分析(如在边缘检测中)变得困难。本文讨论了multilook PolSAR图像边缘检测的七种方法。在所有的方法中,基本思想在于在跨越两个区域的最细的数据条中检测过渡点。利用过渡点和B样条曲线对边缘进行轮廓。在标度复Wishart分布下,采用四个随机距离、两个熵差和最大似然准则;前六个来自h-phi类度量。通过计算时间和正确边缘检测概率,从观察次数、后向散射矩阵整体、跨度、协方差和空间分辨率等方面对所讨论的检测方法的性能进行了量化和分析。将该检测方法应用于三幅真实的PolSAR图像。结果表明,基于Bhattacharyya距离和Shannon熵差的方法优于其他方法。
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英文标题:
《Comparing Edge Detection Methods based on Stochastic Entropies and
Distances for PolSAR Imagery》
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作者:
Abra\~ao D. C. Nascimento, Michelle M. Horta, Alejandro C. Frery, and
Renato J. Cintra
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最新提交年份:
2013
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分类信息:
一级分类:Mathematics 数学
二级分类:Statistics Theory 统计理论
分类描述:Applied, computational and theoretical statistics: e.g. statistical inference, regression, time series, multivariate analysis, data analysis, Markov chain Monte Carlo, design of experiments, case studies
应用统计、计算统计和理论统计:例如统计推断、回归、时间序列、多元分析、
数据分析、马尔可夫链蒙特卡罗、实验设计、案例研究
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一级分类:Computer Science 计算机科学
二级分类:Computer Vision and Pattern Recognition 计算机视觉与模式识别
分类描述:Covers image processing, computer vision, pattern recognition, and scene understanding. Roughly includes material in ACM Subject Classes I.2.10, I.4, and I.5.
涵盖图像处理、计算机视觉、模式识别和场景理解。大致包括ACM课程I.2.10、I.4和I.5中的材料。
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一级分类:Electrical Engineering and Systems Science 电气工程与系统科学
二级分类:Image and Video Processing 图像和视频处理
分类描述:Theory, algorithms, and architectures for the formation, capture, processing, communication, analysis, and display of images, video, and multidimensional signals in a wide variety of applications. Topics of interest include: mathematical, statistical, and perceptual image and video modeling and representation; linear and nonlinear filtering, de-blurring, enhancement, restoration, and reconstruction from degraded, low-resolution or tomographic data; lossless and lossy compression and coding; segmentation, alignment, and recognition; image rendering, visualization, and printing; computational imaging, including ultrasound, tomographic and magnetic resonance imaging; and image and video analysis, synthesis, storage, search and retrieval.
用于图像、视频和多维信号的形成、捕获、处理、通信、分析和显示的理论、算法和体系结构。感兴趣的主题包括:数学,统计,和感知图像和视频建模和表示;线性和非线性滤波、去模糊、增强、恢复和重建退化、低分辨率或层析数据;无损和有损压缩编码;分割、对齐和识别;图像渲染、可视化和打印;计算成像,包括超声、断层和磁共振成像;以及图像和视频的分析、合成、存储、搜索和检索。
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一级分类:Statistics 统计学
二级分类:Statistics Theory 统计理论
分类描述:stat.TH is an alias for math.ST. Asymptotics, Bayesian Inference, Decision Theory, Estimation, Foundations, Inference, Testing.
Stat.Th是Math.St的别名。渐近,贝叶斯推论,决策理论,估计,基础,推论,检验。
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英文摘要:
Polarimetric synthetic aperture radar (PolSAR) has achieved a prominent position as a remote imaging method. However, PolSAR images are contaminated by speckle noise due to the coherent illumination employed during the data acquisition. This noise provides a granular aspect to the image, making its processing and analysis (such as in edge detection) hard tasks. This paper discusses seven methods for edge detection in multilook PolSAR images. In all methods, the basic idea consists in detecting transition points in the finest possible strip of data which spans two regions. The edge is contoured using the transitions points and a B-spline curve. Four stochastic distances, two differences of entropies, and the maximum likelihood criterion were used under the scaled complex Wishart distribution; the first six stem from the h-phi class of measures. The performance of the discussed detection methods was quantified and analyzed by the computational time and probability of correct edge detection, with respect to the number of looks, the backscatter matrix as a whole, the SPAN, the covariance an the spatial resolution. The detection procedures were applied to three real PolSAR images. Results provide evidence that the methods based on the Bhattacharyya distance and the difference of Shannon entropies outperform the other techniques.
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PDF链接:
https://arxiv.org/pdf/1306.2003