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相干斑
相关语句
  speckle
     Speckle Denoising Algorithm of SAR Image Based on SOT Structure in Contourlet Domain
     基于Contourlet域SOT结构的SAR图像相干斑抑制算法
短句来源
     Speckle reduction in SAR images based on the SOT structure in the wavelet domain
     基于小波域中SOT结构的SAR相干斑抑制
短句来源
     Analysis and Statistics of the Speckle Characteristics in SAR Images
     单视SAR图像的相干斑特征分析与统计
短句来源
     Research and Implementation of Speckle Denoising Algorithm Based on Curvelet Transform in SAR Image
     基于Curvelet变换的SAR图像相干斑抑制算法研究与实现
短句来源
     The Coherent Speckle Suppressing Method of SAR Images Based on Stationary Wavelet Transform
     SAR图像平稳小波变换相干斑抑制方法
短句来源
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  coherent speckle
     The Coherent Speckle Suppressing Method of SAR Images Based on Stationary Wavelet Transform
     SAR图像平稳小波变换相干斑抑制方法
短句来源
     Evaluation for coherent speckle suppression filters of SAR images
     SAR图像相干斑抑制滤波性能评价
短句来源
     Research on Coherent Speckle Reduction in High Resolution SAR Image Based on Wavelet Transform
     基于小波变换的高分辨率SAR图像相干斑噪声抑制研究
短句来源
     The Study on Coherent Speckle Reduction in SAR Image Using Wavelet
     基于小波变换的SAR图像相干斑噪声消除方法研究
短句来源
     Approach for Coherent Speckle Reduction in High Resolution SAR Images
     高分辨率SAR图像相干斑噪声抑制方法
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  “相干斑”译为未确定词的双语例句
     Different models are used to describe different type of regions in SAR images. These models include the homogeneous region model and the non-homogeneous region model, and the later consists of the strong scatterer model, the line-like region model and the weak edge region model.
     在SAR图像相干斑抑制方面,建立了一种针对相干斑抑制的SAR图像多描述模型,用不同模型描述SAR图像中不同类型区域,涉及到平稳区域模型和非平稳区域模型,非平稳区域模型又细分为强散射中心模型、线状区域模型和弱边缘区域模型等。
短句来源
     Experiments are made on SAR images by using the method, and the results are compared with those of the Lee filter.
     将该方法用于SAR图像相干斑噪声抑制 ,并与Lee滤波器的去斑效果进行了比较。
短句来源
     Majority of SAR edge detection algorithms deal with images after filtering.
     现有SAR图像边缘检测方法,多半采用先滤相干斑噪声,再进行边缘检测。
短句来源
     A new nonlinear diffusion equation for SAR speckle-removal
     一种基于非线性扩散方程的SAR图像相干斑抑制方法
短句来源
     In the post processing of SAR images, the paper studies the partial differential equation, and establishes a new diffusion coefficient both on the local statistics of SAR images and the robust estimation.
     在SAR图像后处理研究中,介绍了经典的相干斑抑制算法,研究了基于偏微分方程的滤波方法,结合SAR图像的相干斑局部统计特性,建立了一种新的各向异性扩散方程抑制SAR相干斑噪声的算法。
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  speckle
We found a new structure named solicitation speckle at the low latitude of the animal pole and near the micropylar apparatus between the ovum envelope and cell membrane in the zygote of fish.
      
The solicitation speckle similar to type I cortical alveoli was very purple in H.E.
      
Moreover, no membrane around the solicitation speckle in TEM was found.
      
In SEM, the solicitation speckle looked flocculent.
      
During cortical reaction, the solicitation speckle played a very important function in arousing cortical reaction.
      
更多          
  coherent speckle
Using tunable lasers for photochromic coherent speckle diagnostics of bulk scattering media and optical fibers
      
Because of the serious noise of coherent speckle exists in SAR images, some people believe that edge extraction by using gradient for SAR imagery gives poor results.
      
Suppressing the coherent speckle of SAR images with wavelet analysis
      
This paper studies Synthetic Aperture Radar (SAR) images contaminated by the coherent speckle noise with the multiresolution analysis of wavelet transform.
      
It shows that this denoising method of wavelet analysis offers a very attractive alternative to suppress the coherent speckle noise of the SAR image.
      


In the multistage imaging proc ssing for SAR digital imaging and the applications of SAR image, it is often required to extract the luminance edge features of the SAR imagery. It has been studied to extract the luminance edge features for the ordinary imagery-produced by visible or infrared imaging system The methods using gradient are effectivery for the extraction of the luminance edge features of the ordinary imagery and commonly used. Because the serious noise of coherent speckle exists in the SAR imagery,...

In the multistage imaging proc ssing for SAR digital imaging and the applications of SAR image, it is often required to extract the luminance edge features of the SAR imagery. It has been studied to extract the luminance edge features for the ordinary imagery-produced by visible or infrared imaging system The methods using gradient are effectivery for the extraction of the luminance edge features of the ordinary imagery and commonly used. Because the serious noise of coherent speckle exists in the SAR imagery, some people believe that edge extraction using gradient for SAR imagery gives poor results. However in this paper, a rather ideal method is derived for the extraction of luminance edge features for SAR imagery with the consideration of 'he characteristics of SAR imagery. This method uses the relative average gradient and combines detection with tracking.

在合成孔径雷达数字成像的多级成像和合成孔径雷达图像的许多应用中,往往需要提取合成孔径雷达图像的灰度边界特征。人们对于由可见光或红外成像系统获得的普通图像的灰度边界提取已经进行了很多研究。使用灰度梯度提取普通图像的灰度边界非常有效,得到了广泛的应用.但由于在合成孔径雷达图像中存在严重的相干斑噪声,有人认为使用灰度梯度提取合成孔径雷达图像的灰度边界得不到好的结果。在本文中,我们考虑到合成孔径雷达图像的特性,给出了一种比较理想的提取合成孔径雷达图像的灰度边界的方法。这种方法使用相对平均灰度梯度,并且把检测与跟踪结合起来。

A new adapted speckle filtering algorithm is presented on the speckle noise statistics in thispaper,which is able to reduce the speckle noise and selete filtering window for SAR images .The algorithm is presented for application to SeasatAR images.The experimental rcsults are comparised with that ofLee and Oddy s,which operates along similar computational principles.The quantitative comparison resultsassess that our algorithm may be a more robust one.

详细分析了合成孔径雷达图像中相干斑的统计特性,提出了一种具有窗口自选功能的自适应相干斑滤波算法,并将该算法用于Seasat-ASAR图像的滤波处理;并将滤波结果与Lee算法和Oddy算法作了对比试验,其结果表明滤波性能优于Lee算法和Oddy算法。

The coherent-imaging principle of Synthetic Aperture Radar causes speckle niose, which is the major problem of SAR images. According to the characteristics of SAN image details and speckle distribution, this peper puts forward a speckle-reduction algorithm based on region division. This algorithm can protect edge-characteristics of SAR image, along with a very good speckle reduction effort. Eperimental result shows that this algorithm is better than other existing speckle reduction methods.

合成孔径雷达(SAR)因为相干成像原理所固有的相干斑噪声是影响其图像质量的主要原因。文中根据SAR图像的纹理特征和相干斑噪声的统计特征,提出了一种基于区域分集的相干斑抑制算法。本算法能够完全保留SAR图像边缘特征,同时对相干斑具有较好的抑制能力。实验结果表明,本算法处理效果优于目前常用的相干斑滤波算法。

 
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