The filtering in spatial domain, spatial frequency domain and a system of optical formatting imagines are also analyzed.
同时也分析了空域滤波、空频域滤波、光学成像系统。
Different scenes are analyzed in the power spectrum spatial frequency domain, it can be shown that the power spectrum of most natural scenes is of invariability.
用功率谱的方法对任意景物在空间频域进行分析表明，功率谱对于自然景物具有一定的不变性。
Synthetic aperture radiometer applies the interferometric principle to sample in the spatial frequency domain and retrieves the image by Fourier or other numerical transformation.
综合孔径辐射计利用孔径综合原理在空间频率域中采样，通过傅立叶变换或其他数学变换获取反演亮温图像。
Based on single magnetic dipole model, the spatial filtering method of cardiac magnetic signal in the frequency domain was investigated.
本文利用心脏磁场单磁偶极子模型研究了心脏磁场强度检测信号的频域空间滤波法。
The watermark was embedded in the wavelet domain using the mean quantization method. This method can be used to detect the distortion both in spatial and frequency domain.
这种算法是采用了均值量化的方法，把数字水印嵌入图像的离散小波域，可以检测在空间域和频率域的图像失真。
The homogeneity of the sheet is analyzed by image transform, i. e. the spatial domain image is transformed to frequency domain or wavelet domain to obtain the features.
对于纸页的均匀性分析，通过图像变换，将空间域图像变换到频域或小波域进行分析，获取其特征；
These functions can transfer multiobjective problem in spatial to in frequency domain by math treating, and derive a fast and efficient imaging algorithm.
而这些准则函数，经过一系列数学处理，可以把空间域的多准则的问题转化为频域处理，从而推出一种快速、有效的成象算法。
Encryption algorithms in spatial domain and frequency domain are proposed.
设计了空间域和频率域加密算法。
This algorithm takes local modem both for spatial domain and frequency domain, therefore it is efficient for instable process, too.
这种算法对于时域或频域的考察都采取局部的方式，所以对于非平稳过程也一样十分有效。
It can be accomplished in spatial domain and frequency domain. This chapter presents the ways of the smoothing of digital image.
数字图像平滑处理可以在空间域或频率域中进行。
Both types have their own advantages: frequency domain methods have strong robustness, while spatial domain methods have higher accuracy.
这两种方法各有特点：频率域法的鲁棒性强，而空间域方法相对精确度更高。
Operational modal analysis method of bridge was built based on frequency domain and spatial domain decomposition.
利用频域-空间域分解法，建立桥梁运行模态识别方法。
Numerical simulation shows that the spatial resolution is enhanced by four times using the frequency-domain deconvolution algorithm with high temperature accuracy.
理论仿真结果表明，采用频域反卷积算法可以在不降低光源脉冲宽度的情况下，将空间分辨率提高四倍。
The traditional way is to obtain the sub-image by sampling the noised image in spatial or frequency domain, then calculate its variance to replace that of the original noise.
传统方法是通过空域或频域采样，得到该子噪声图像，然后直接对其估计方差，它对图像信息的分布有要求。
In this paper, principle analysis shows that tricolor grating has the character of multi-wave superposed in spatial domain and separated in frequency domain.
通过原理分析说明，三色光栅具有的多光谱的空域复用、频域分离的结构特点。
From the digital image processing knowledge, the enhanced process can generally be divided into two categories, one is the frequency domain processing and the other is spatial processing.
从数字图像处理知识知道，增强处理一般可以分为频域处理方法和空域处理方法两大类。
The multiresolution structure of wavelet is used to construct the image frequency components., which has better image fidelity preservation and robustness than spatial domain based techniques.
本算法利用小波变换的多分辨率特性来进行图象的小波域分解，这样可以获得更好的图象保真度并且比在空域中的水印嵌入算法更稳健。
To resolve the problems existed in the estimation of motion in video sequences, a novel method combining gray projection in spatial domain and phase correlation in frequency domain is proposed.
针对视频图像运动检测问题，提出一种空域灰度投影和频域相位相关相结合的亚像素配准方法。
Then, the edge enhancement gains are evaluated according to the noise distributions on the spatial-frequency domain;
依据统计特性来估计噪声在空频域上的分布，并依此构造具有空频自适应性的边缘增强增益；
Some research is processed as follow:In the area of video de-noising, we did our research on various intra-frame de-noising methods on spatial domain, frequency domain and wavelet domain.
在视频降噪方面，从帧内与帧间两个角度对视频降噪方法进行了研究。
Some research is processed as follow:In the area of video de-noising, we did our research on various intra-frame de-noising methods on spatial domain, frequency domain and wavelet domain.
在视频降噪方面，从帧内与帧间两个角度对视频降噪方法进行了研究。
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