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时域滤波
相关语句
  temporal filtering
    TEMPORAL FILTERING AND MOTION COMPENSATION IN LOW LIGHT LEVEL IMAGE SEQUENCES
    微光图像序列时域滤波和运动补偿
短句来源
    Study of Underwater Multi-target Localization Based on Temporal Filtering Technique
    基于时域滤波水下多目标定位研究
短句来源
    Based on these knowledge, Motion compensated temporal filtering (MCTF) which is an effective method to eliminate temporal redundancy is researched , and MCTF based on db2 wavelet is presented by studying the method of MCTF using Haar wavelet. The simulation proves that the low-pass frame is better than the Haar one, it means that the temporal scalability is improved.
    在此基础上,本文研究了在时间可伸缩性中采用的一种有效方法:运动补偿时域滤波(MCTF)技术,并借鉴Haar小波进行运动补偿时域的方法,研究并实现了基于db2小波的运动补偿时域滤波方法,仿真结果表明该方法比基于Haar小波的方法得到了更高质量的低通帧,这也意味着在时间可伸缩性的处理上有了进一步的改善。
短句来源
    IMPROVED MOTION COMPENSATED TEMPORAL FILTERING IN SCALABLE VIDEO CODING
    可扩展视频编码中运动补偿时域滤波的改进
短句来源
    This thesis introduces a motion compensated 3D wavelet scalable video coding system. And three key techniques of the coding system have been thoroughly researched, namely MC temporal filtering, 3D wavelet transform structure and 3D wavelet subband coding.
    本文在对运动补偿三维小波可扩展视频编码框架进行分析的基础上,对该框架涉及的三个关键技术,即运动补偿时域滤波、三维小波变换结构以及三维小波子带编码进行了深入研究。
短句来源
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  time-domain filter
    Adaptive digital beam forming technology is developing along with digital signals process technology, as a form of space-domain filter it is different from time-domain filter or frequency-domain filter.
    自适应数字波束形成技术是随着数字信号处理技术而发展起来的,它既不同于时域滤波也不同于频域滤波,而是一种空域滤波形式。
短句来源
    The time-domain filter can then be used to select the narrow central portion of the cross correlation function (CCF), capturing virtually all of the signal but rejecting most of the noise.
    对相关函数进行时域滤波,挑选出互相关函数中窄信号自相关函数部分,去掉剩余的大部分噪声能量,得到加窗互相关函数(CCF)。
短句来源
  “时域滤波”译为未确定词的双语例句
    Combining with efficient multiphase motion estimation in hierarchical matching strategy,lifting implementation of in band MCTF is applied,by exploiting multihypothesis technology to optimize motion compensation;
    将有效的多相位子带内运动估计纳入分层运动估计策略中,用提升算法实现子带内运动补偿时域滤波,融入多假设预测以优化运动补偿技术;
短句来源
    Several kinds of parameter k in the algorithm are analyzed. Temporal recursive low-pass filtering is an effective method in real-time detecting small target with condition of complex backgrounds. It can implement the background updating and improve signal to noise ratio.
    在实验工作中,对时空滤波和空间滤波的主要方法应用于运动小目标检测进行了仿真验证,衡量了时域滤波方法和空域滤波方法对背景抑制的能力,比较了一阶时域递归低通滤波算法中k系数求法不同时,提取运动小目标的效果。
短句来源
    On the basis of the time-domain adaptive algorithms and frequency-domain adaptive algorithms, the modified ones are proposed which performances are demonstrated.
    本文在对现有的自适应时域滤波算法和自适应频域滤波算法提出修正算法的基础上,通过理论推导和仿真分析论证了改进算法的有效性和高效性。
短句来源
    This paper present a novel adaptive beamforming algorithm in a CDMA mobile communication environment, namely, LBA(Lagrange Based Algorithm), which the proposed smart antenna system can be viewed as a time-space filter.
    在CDMA中本文采用的快速波束形成算法,即拉格朗日算法,将整个智能天线系统视为时空滤波器,首先对接收信号进行解扩展的时域滤波,再进行空域的波束形成,能够在保证一定精度的前提下,大大减小计算量。
短句来源
    Taking the Fourier transform of this windowed CCF produces the time-domain filtered cross spectral density (TDFCSD). The SNR can be improved with using the character of noise which distribute uniformly in frequency domain.
    再进行傅立叶变换产生时域滤波互相关谱密度(TDFCSD),利用噪声在频域中均匀分布的特性使SNR得到改善。
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  temporal filtering
In this work, a new method to deal with the unconnected pixels in motion compensated temporal filtering (MCTF) is presented, which is designed to improve the performance of 3D lifted wavelet coding.
      
Furthermore, multiple description scalable coding (MDSC) is investigated, and novel MDSC schemes based on 3D wavelet coding are proposed, using the lifting implementation of temporal filtering.
      
The PRNS procedure uses temporal filtering to define large-scale turbulence, and the model developed to account for unresolved scales is grid independent.
      
For many reasons, temporal filtering may be more natural, particularly for flows of engineering interest.
      
Temporal filtering from perceptual processing is not sufficient to account for the discrepancies between neural and psychophysical ratios.
      
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  time-domain filter
Although the structure of frequency shift filter is more complicated than the time-domain filter, it uses both time correlations and frequency spectrum correlations so it can achieve better performances on separating the overlapping signals.
      
The time-domain filter is determined from a matrix equation involving the input autocorrelation function and the two-sided cross-correlation function.
      


In this paper a time-saving program for computing the Fast Fourier Transform without reordering of address is derived. In seismic data processing, the timedependent frequency filter method introduced here uses about the same calculating time as the recurrence filter method, but gives better results. In the two-dimensional wave filter problem, we decompose the Fourier Transform into positive velocity and negative velocity components, thus making it possible to decompose a cross-hatch wave into positive velocity...

In this paper a time-saving program for computing the Fast Fourier Transform without reordering of address is derived. In seismic data processing, the timedependent frequency filter method introduced here uses about the same calculating time as the recurrence filter method, but gives better results. In the two-dimensional wave filter problem, we decompose the Fourier Transform into positive velocity and negative velocity components, thus making it possible to decompose a cross-hatch wave into positive velocity and negative velocity components. The frequency filter method is much simpler than time domain filter method and uses less computing time. The proposed frequency domain inverse filter method is also simpler than time domain inverse filter method.

本文推出不倒地址的快变计算公式,提出编制节省计算时间程序的方法,在地震数字处 理中使用频域时变滤波方案实际计算时间与时域递归滤波相当。对二维滤波讨论了正负速度 区别解决了时域滤波产生坑席现象的问题,计算方法比时域滤波统一,简单,计算时间省。 提出的频域反滤波方案也比时域反滤波计算简单时间省。

This paper analysises the effects of the fist-order motion-compen-

从理论上分析了一阶运动补偿递归滤波器的滤波效果,推导了方差、相关系数、滤波失真及预测误差的表达式,并与直接递归时域滤波作了对比,证明运动补偿滤波器效果更好。

With the static low-light-level Anage sequence, temporal filtering is one of the best techniques in suppressing noise and improving signal-to-noise ratio. But with the active image sequence, the moving target may become fuzzy and the linage quality may become worsened when usinS temporal filtering. In this paper, temporal filtering enhancement technique with motion compensation is presented. With this approach,the inter-frame interpofation of grey scale of moving pisels is used in the missing frames resulting...

With the static low-light-level Anage sequence, temporal filtering is one of the best techniques in suppressing noise and improving signal-to-noise ratio. But with the active image sequence, the moving target may become fuzzy and the linage quality may become worsened when usinS temporal filtering. In this paper, temporal filtering enhancement technique with motion compensation is presented. With this approach,the inter-frame interpofation of grey scale of moving pisels is used in the missing frames resulting from multi-frame averaging and motion compensation is realized. With this satisfactory results can be obtained in active LLL image sequence processing.

对于静态微光图像序列,时域滤波技术是抑制噪声,提高信噪比最为有效的方法之一。但对于活动图像序列,该技术会使运动目标模糊,从而使图像质量更差。本文提出了带有运动补偿的时域滤波技术,在多帧平均后的图像序列中进行运动像点灰度的帧间内插处理,对由于多帧平均而缺省帧数的运动物体所在的像素点进行灰度补偿,从而使多帧平均技术对于活动微光图像序列同样具有较好的处理效果。

 
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