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相干滤波
相关语句
  coherent filtering
     IMAGE ENHANCEMENT OF COHERENCE CUBE BASED ON COHERENT FILTERING
     基于相干滤波的相干体图像增强
短句来源
     Moire fringe multiplication of superimposed gratings in coherent filtering system
     迭合栅云纹在相干滤波系统中的倍增
短句来源
     In past, the research was concentrated on the coherent condition or using the coherent filtering to eliminate the speckle.
     或用相干滤波的光信息处理方法对散斑进行消除或减弱。
短句来源
     An innovative image enhancement technique of coherence cube based on coherent filtering is presented in this paper. It can suppress undesired LCS and random noise through coherent noise filtering of the coherence cube, so as to obtain fault information with high resolution and signal-noise-ratio by using less seismic traces and a smaller time window in coherence analysis algorithms.
     文章提出了一种新的基于相干滤波的相干体图像增强技术,通过对相干体进行相干噪声滤波处理来压制不需要的低相干带和随机噪声带来的干扰,从而使得在进行相干分析时可以使用较少的地震道和较短的分析时窗来获取高分辨率和高信噪比的断层信息。
短句来源
  “相干滤波”译为未确定词的双语例句
     Surface defects of the optical elements measured by the coherent filter imaging system
     相干滤波成像系统测量光学元件表面疵病
短句来源
     First, when the space frequency of the image and the space frequency of the speckle are high ,we can eliminate the speckle using a small filtering window (high-pass filtering or low-pass filtering ) ,while ,at the same time we will lost the high space frequency information and decrease the resolution of the image. The other condition is concentrated on restoring the image or removing the blur of the image.
     第二,若利用相干滤波的方法来消除图像上的散斑,当图像上的空间频率和散斑的空间频率相差比较大时,可以通过低通(或高通)滤波的方法来消除图像的散斑,但这也将导致图像上的高频(或低频)信息损失掉,而影响图像的清晰度或对比度。
短句来源
     The paper suggests that to have the dephase filtering, coherence filtering and resolution filtering connected in series, the dephase coherence deconvolution can thus be constituted and the said problems could be satisfactorily resolved.
     本文提出把去相位滤波、相干滤波和分辨滤波串联起来,即构成去相位相干反褶积,它可使上述问题得到圆满解决。
短句来源
  相似匹配句对
     Coherent-enhancing anisotropic diffusion filtering technique.
     相干增强各向异性扩散滤波技术
短句来源
     An Improved Adaptive Coherent Model and Analyses
     自适应相干模板法滤波的分析及改进
短句来源
     Digital Filter
     数字滤波
短句来源
     The application of inverse Q filtering
     反Q滤波的应用
短句来源
     THE PHYSICAL MEANING OF COHERENT LENGTH
     相干长度的物理意义
短句来源
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It is pointed out in the paper that the result of nonzero phase record handled with Frequency Reinforcement Filtering doesn't appear so good. And if the desired signal of dephase filtering is taken as spike then its adaptability to frequency time-variant will become poor. But the resolution would be decreased again while it is converted from record wavelet. The paper suggests that to have the dephase filtering, coherence filtering and resolution filtering connected in series, the dephase coherence deconvolution...

It is pointed out in the paper that the result of nonzero phase record handled with Frequency Reinforcement Filtering doesn't appear so good. And if the desired signal of dephase filtering is taken as spike then its adaptability to frequency time-variant will become poor. But the resolution would be decreased again while it is converted from record wavelet. The paper suggests that to have the dephase filtering, coherence filtering and resolution filtering connected in series, the dephase coherence deconvolution can thus be constituted and the said problems could be satisfactorily resolved. Also, the way of computing is discussed in the paper. From the trial theoretical computation, it shows that a remarkable effect could be pro -duced from the recommended technique in the paper both in resolution and S / N of seismo-gram.

本文指出:频率加强滤波对非零相位记录处理效果欠佳;去相位滤波的期望信号若取成尖脉冲,则对频率时变的适应性差,而由记录子波转换,又会降低分辨率。本文提出把去相位滤波、相干滤波和分辨滤波串联起来,即构成去相位相干反褶积,它可使上述问题得到圆满解决。文中讨论了计算方法,经理论试算表明,这种方法对提高地震记录的分辨率和信噪比都能取得效果。

Coherence analysis technique plays a key role in seismic interpretation. To suppress lower-coherence-strip (LCS) along horizon and random noise, multi-traces and a large time window are needed in coherence analysis to generate a coherence cube. However the coherence cube will lose its resolution in space-time domain when multi-traces and a large time window are applied. An innovative image enhancement technique of coherence cube based on coherent filtering is presented in this paper. It can suppress undesired...

Coherence analysis technique plays a key role in seismic interpretation. To suppress lower-coherence-strip (LCS) along horizon and random noise, multi-traces and a large time window are needed in coherence analysis to generate a coherence cube. However the coherence cube will lose its resolution in space-time domain when multi-traces and a large time window are applied. An innovative image enhancement technique of coherence cube based on coherent filtering is presented in this paper. It can suppress undesired LCS and random noise through coherent noise filtering of the coherence cube, so as to obtain fault information with high resolution and signal-noise-ratio by using less seismic traces and a smaller time window in coherence analysis algorithms. Along horizon LCS and differences in directions of LCSs resulted from faults are used to suppress the undesired LCS and random noise through local dip scanning and polynomial filtering. Application of our algorithm to real dataset shows that it can generate real coherent cube image with high resolution and signal-to-noise ratio, thus providing more abundant geological information.

地震资料的相干分析是一项十分重要的地震解释技术。为了压制沿地层形成的低相干带和随机噪声带来的干扰,相干分析技术需要利用多个地震道和较大的分析时窗来得到相干体。但多个地震道和大分析时窗的采用,会导致所获得的相干体数据的空间和时间分辨率降低。文章提出了一种新的基于相干滤波的相干体图像增强技术,通过对相干体进行相干噪声滤波处理来压制不需要的低相干带和随机噪声带来的干扰,从而使得在进行相干分析时可以使用较少的地震道和较短的分析时窗来获取高分辨率和高信噪比的断层信息。此项技术利用了沿地层形成的低相干带和由断层产生的低相干带方向上的差别,通过局部方向扫描和多项式滤波来滤除不需要的低相干带和随机噪声带来的干扰。实际资料处理结果表明,所提出的算法可以获得真实的、高信噪比和高分辨率的相干体图像,从而提供更丰富的各种地质信息。

 
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