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。
Fischer prefers to use a less common mathematical process known as the wavelet transformation, which represents the sound in terms of short, discrete components known as wavelets.
菲舍尔更喜欢一种比较不常用的数学方法——小波变换,这种方法可以将声音分解成比较短的离散的小波成分。
Wavelet processing, in which wavelet estimation is essential, is an effective technique for improving the resolution of seismic data.
子波处理技术是提高地震资料分辨率的一种有效方法,其关键在于获得准确的子波估计。
Experiments show that the multiresolution analysis of wavelet transform is an effective new method for processing unstable signals having time variant spectra.
实验结果表明,小波变换的多分辨率分析对于分析处理具有时变谱特性的非平稳信号是一种新的有效方法。
The directional wavelet theory provides a novel sparse representation method for image processing, and it can capture geometrical image structures more efficiently.
方向性小波理论为图像处理提供了一种新的稀疏表示方法,能够更有效地捕捉图像中的几何结构。
A multiuser detection method based on adaptive wavelet network is proposed.
提出了基于自适应子波网络的多用户检测方法。
Transmission of wavelet coded images over lossy packet networks presents an image reconstruction problem.
在丢包信道中传输子波编码图像时,存在图像重构问题。
These methods all use surface consistency to separate out amplitude and wavelet informations, bringing good results.
这些方法都利用了地表一致性特点,来分离振幅与子波信息,并取得了较好的效果。
Four component surface consistent wavelet deconvolution method well makes up for insufficiency of the above deconvolution methods.
四分量地表一致性子波反褶积方法较好地弥补了上述反褶积方法的不足。
Theoretic calculation show that wavelet can be reconstruct from double spectrum of theoretical seismic data for seismic wavelet with different characters.
理论计算表明,对不同性质的地震子波,均可从理论地震记录的双谱中重构子波。
Compared with deconvolution method, the well log curves transformed by wavelet analysis contain more detailed information and reach higher vertical resolution.
该方法与反褶积方法比较,小波变换后的测井曲线更能反应细节信息,具有更高的纵向分辨率。
For the image high-frequency part, use the new evaluation factor - wavelet neighborhood information to choose the ultimate wavelet high-frequency coefficients.
使用由方差和平均梯度构造的新的评价因子——小波邻域信息量作为融合规则选取小波高频系数。
The location result is not influenced by fault resistance and inception Angle when wavelet transform coefficient of aerial mode current is used in fault location.
利用线模电流的小波变换系数进行测距,不仅不受故障电阻的影响,也不受故障起始角的影响。
This paper introduces the image block segmentation into the multi-focus image fusion, and USES wavelet spatial frequency as the multi-focus image clarity indicator.
本文将图像块分割引入多聚焦图像融合中,以小波空间频率作为多聚焦图像的清晰度指标。
Integer to integer wavelet transform has a simple structure, needs no more storage space and is very easy to be implemented, which is suitable for image compression.
整数提升小波变换结构简单,不需要额外的存储空间,易于实现,在图像压缩中具有很好的应用价值。
The article presents virtual scene building technology based on wavelet transform, and implements a real-time roaming system for cylinder, cubic and sphere panorama.
文章介绍了基于小波变换的虚拟场景构造技术,并实现了一个对柱面全景图、立方体全景图和球面全景图的实时漫游系统。
Based en a wavelet ridge algorithm, a novel approach is presented for extracting time-variant oscillation performance from data measured by phasor measurement units.
基于小波脊算法,提出了从相量测量装置的实测数据中提取电力系统时变振荡特性的新方法。
The theory of wavelet packet is more complex than the analysis of wavelet, but its means of analysis is more flexible, and has more accurate partial analysis ability.
小波包理论比小波分析更为复杂,但其分析手段更为灵活,具有更为精确的局部分析能力。
Therefore, a lossy Internet image transmission scheme based on wavelet transform is presented, by which Internet image transmission time can be decreased substantially.
因此,提出了一种基于小波变换的因特网图像传输方案,能大大缩短通过因特网的图像传输时间。
Furthermore, in order to make a necessary foundation for further research, the relevant knowledge about wavelet analysis and generalized functions is introduced briefly.
并简要介绍小波分析及广义函数的一些基本原理与相关知识,以此作为本课题研究的必备基础。
Finally, the marked virtual images are gotten with inverse wavelet transform and a new group of control points is obtained based on the pixel value of the virtual image.
最后,进行小波逆变换,得到含有水印信息的虚拟图像,根据虚拟图像中的象素值就可以得到一组新的控制顶点坐标。
Many results show a fact that, compared with traditional DCT transform, wavelet transform has a great advantage, and it will surely be broadly used in video compression.
文中的大量实验结果表明,小波变换同传统的DCT变换相比较有很大的优越性,在视频压缩中也必将取得更广泛的应用。
That provides not only the theoretic bases for discussing the image space of wavelet transform, but also a new method to investigate the wavelet analysis theory further.
这不仅为小波变换像空间的讨论提供了理论基础,也为小波分析理论的进一步研究提供了新的途径。
This paper analyzed the characteristic of noise in hyperspectral data deeply, and puts forward a de-noising method based on stationary discrete wavelet transform (SDWT).
文章深入分析了高光谱遥感数据中噪声的特点,提出了一种基于平稳小波变换的改进小波滤噪算法。
The key advantage of the wavelet analysis is that, in contrast to the conventional Fourier analysis, it can be localized in the time and frequency domain simultaneously.
同传统的傅立叶分析相比,小波分析的最大优势在于可以同时在时频两方面实现局部化分析。
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。
The technique of wavelet transform has been applied and studied in the image coding field extensively because of its good feature of time-frequency and human visual system.
小波变换技术以其良好的空间—频率局部特性和与人眼视觉特性相符的变换机制,在图像编码领域得到了广泛的应用和研究。
The technique of wavelet transform has been applied and studied in the image coding field extensively because of its good feature of time-frequency and human visual system.
小波变换技术以其良好的空间—频率局部特性和与人眼视觉特性相符的变换机制,在图像编码领域得到了广泛的应用和研究。
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