The paper analyzes the synchronization of CPI changes based on monthly CPI data with wavelet filtering approach.
本文主要基于月度数据使用滤波分析方法分析省际CPI的同步性。
A new method of fault diagnosis of in-situ sampled vibration signals is introduced for the non-stationery signals of rotating machines by using the harmonic wavelet filtering.
针对旋转机械非平稳信号的特点,提出采用谐波小波滤波对现场采集的振动信号进行故障诊断的新方法。
Experiments show that wavelet filtering can enhance the small fault detection capacity and detect more timely compared with exponentially weighted moving average (EWMA) filter.
实验表明,小波滤波法能提高小故障的检测能力,而且与指数权重滑动平均滤波法相比更具有故障检测的及时性。
This paper attempts to preprocess ultrasonic signal by wavelet filtering based on the mathematical model of the ultrasonic echo, extracts weak echoes from signal with high noise background.
在超声反射回波的数学模型基础上,利用小波滤波方法对超声信号进行预处理,提取强噪声背景中的弱回波信号。
It is then subject to such mathematical indignities as wavelet decomposition, multi-resolution Fourier analysis, polyphase filtering and discrete cosine transformation.
接下来它还要经过一些数学处理程序,比如小波分解,多重分辨率傅立叶分析,多相过滤,离散余弦变换等。
A filtering method based on wavelet transform with local maximum value was discussed. The method could distinguish signal from the noise according to the different features of scale change.
小波变换局部极大值滤波方法利用信号与噪声不同的尺度变化特性来区分信号与噪声,将噪声从信号中分离出来。
On the basis of analyzing the basic features of impact signal noise from reactor loose parts, the wavelet nonlinear threshold value filtering method for the use of impact signal extraction is studied.
在分析反应堆松动部件冲击信号噪声基本特征基础上,利用小波非线性阈值滤波方法对冲击信号的提取进行了研究。
Convolution method is a filtering method used to extract fault information from observed gravity field by adopting known theoretical wavelet.
褶积法是用已知理论子波从重力观测场中提取断层信息的一种滤波方法。
Applying median filtering will effectively reduce the impulse noise, which can combine wavelet packet transform and median filter.
将子波包变换和中值滤波相结合,可以有效地降低图像噪声。
According to the feature of the MRA, this paper presents a noise filtering method of adaptive fuzzy threshold for wavelet classification base on multi resolution.
针对小波变换多分辨分析(mra)的特点,本文提出一种多尺度分级的自适应模糊权重中值滤波的去噪方法。
Based on wavelet domain Hidden Markov model, a novel speckle suppression method for medical ultrasound images is presented which combines Bayesian estimation and homomorphic filtering.
在此基于小波域隐马尔可夫树模型,将贝叶斯估计和同态滤波思想有机结合,提出一种新的医学超声图像去噪方法。
Filtering algorithms base on space, frequency, wavelet and time have been introduced to reduce noises caused by environmental and lighting conditions in the video image sequences.
针对视频图像存在由于环境、光照等原因所引起的噪声的特点,应用基于空间域、频域、小波域和时域等多种去噪方法。
It introduces the method of wavelet transformation applied in the acoustic wave signal processing and how to use this method to implement the function of filtering the waves.
讨论了在声波信号处理中所使用的小波变换方法,以及用这种方法所实现的滤波功能。
Design the signal pre-treatment model and make use of such methods as Fourier transfer and wavelet analysis, etc to perform filtering treatment for spectrum signals.
设计信号预处理模块,采用傅里叶变换、小波分析等方法,对光谱信号进行滤波处理。
A new double relational filtering model is constructed using two wavelet groups to enhance the filtering constraints of the geophysical and geochemical data.
构建了一个考虑两个子波群,增加信息约束条件对研究区物化探信息进行滤波的新模型—双子波关联滤波模型。
Quite perfect lattice filtering theory has been narrated in the paper "Lattice filtering—A new wavelet processing technique" published in 《OGP》, 21(2)1986: 111~124.
在“格点滤波——子波处理的一种新技术”(《石油地球物理勘探》,21(2)1986:111~124)一文中,已经建立了比较完整的格点滤波理论。
In performance and visual quality, the algorithm is better than the wavelet denoising based on discrete orthogonal wavelet transform and the conditional median value filtering method.
算法在性能指标和视觉质量上均优于基于离散正交小波变换的阈值去噪方法和传统的中值滤波法。
Motion compensated temporal filtering is an essential component in deciding the coding performance of an interframe wavelet system.
移动补偿时间滤波是一个在决定编码的表现非常重要的要素。
Image denoising experiments show that wavelet transform for image denoising is better than mean filtering, no significant difference compared with median filter.
图像的消噪实验表明,小波变换用于图像消噪效果优于均值滤波,与中值滤波去噪相比无明显差别。
An adaptive speckle filtering algorithm is proposed. It detects image points belonging to edge based on wavelet transform. Speckle are filtered according to detect results and multi-look.
提出了一种自适应斑点滤波算法,它基于小波变换检测图像中的边缘点,根据检测结果结合多视处理实现斑点滤波。
The optical wavelet transform filtering is introduced emphatically, the principle of the measurement system is discussed in depth and its potential applications are pointed out.
重点介绍了光学小波滤波解调法,探讨了其测量系统的原理,并指出该方法可用于微弱信号的检测与处理。
Combining the advantages of median filtering and wavelet transform in denoising salt and pepper and gauss noise, bring up a sort of mixing denoise algorithm, and analyze the critical steps on detail.
结合中值滤波与小波去噪分别去除椒盐噪声和高斯噪声中的优势,提出了一种指纹图像混合去噪算法,并对其中的关键步骤进行了详细分析。
The result shows that the filtering algorithm based on wavelet packet analysis can decrease the random error and improve the measuring precision of laser gyro effectively.
结果表明基于小波包分析的滤波方法能有效减小随机误差,提高激光陀螺的测量精度。
Secondly, use median filtering method to get inverse wavelet estimation in inverse domain.
其次,在逆子波域采用中值滤波,提取接近真实逆子波的逆子波估计;
One aspect is that studys on filtering of FOG's signals, the main filtering means are the Kalman filter and the Wavelet filter, which is discussed in chapter 3.
一方面是对光纤陀螺信号处理进行了滤波研究,主要运用卡尔曼滤波和小波变换滤波两种方法,这是第三章的主要内容。
The experiments show that the blind watermarking algorithm is robust in JPEG image compression, image clipping, image scaling and image filtering, especially in wavelet image compression.
实验结果表明,该算法对JPEG压缩及图像剪裁、缩放、滤波有较好的鲁棒性,特别对于基于小波压缩算法的图像具有很好的鲁棒性。
According to the characteristics of the seismic data, some data processing algorithms based on FFT and wavelet for denoising, filtering and data compression is put forward.
针对地震波信号白勺特点,提出了基于FFT和小波分析白勺包括去噪、滤波和数据压缩白勺数字信号处理算法。
Filtering signal in the wavelet domain, by the frequency components acceptable for ear from the original speech, is a simple and effective speech denoising method.
利用此特性对信号进行小波域滤波,可从加噪的语音中提取人耳所能接受的频率成份,是一种简单有效的语音去噪算法。
Experiment indicates that it is feasible to apply wavelet transform to the signal processing in radiation temperature measuring and filtering is satisfactory.
论文通过实验证明将小波变换技术应用于辐射测温技术的信号处理是可行的,并且取得了很好的滤波效果。
Experiment indicates that it is feasible to apply wavelet transform to the signal processing in radiation temperature measuring and filtering is satisfactory.
论文通过实验证明将小波变换技术应用于辐射测温技术的信号处理是可行的,并且取得了很好的滤波效果。
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