transform processing

Real-time joint transform correlator based on differential processing of liquid crystal light valve

基于液晶光阀微分处理的实时联合变换相关器

The Match Fourier Transform Processing of Reverse Order Data

数据倒序匹配付里叶变换处理

Before may adjust, an axle to transform the processing thickness.

可调节前道轨变换加工厚度。

And the one-dimensional discrete cosine transform is realize with a modified Loeffler fast algorithm. Largely reduce the complexity of the hardware implementation, improve the processing speed of two-dimensional discrete cosine transform.

并采用改进算法结构的Loeffler快速算法实现一维离散余弦变换，减少了硬件实现的复杂度，提高了二维离散余弦变换的处理速度。

Roberts gradient processing is carried out for the input image of joint transform correlator, and at the same time phase shift technique is applied to the reference image and binaryzation is implemented in power spectrum in the frequency domain.

我们对联合变换相关器的输入图象进行Roberts梯度处理，同时对参考图象采取相移技术，并在频域中将功率谱二值化。

Fourier transform lens is key operating element in optical information processing system.

在光学信息系统中,傅立叶变换透镜是关键的运算部件.

The research appears in the journal Nature Photonics. [ David Hillerkuss, "26 Tbit s − 1 Line-Rate Super-Channel Transmission Utilizing All-Optical Fast Fourier Transform Processing"]

该技术发表在了《自然•光子学》杂志上[David Hillerkuss，“26Tbit s−1Line-Rate Super-Channel Transmission Utilizing All-Optical Fast Fourier Transform Processing”]。

Its time-domain analysis ability that Fourier transform be not was especially suitable for time series processing.

它拥有Fourier变换所不具备的时域分析能力，特别适用于对时间序列的处理。

In view of the fact that seismic amplitude attenuation varies with the absorp-tion of different frequency contents, and based on wavelet transform theory, we put forward a new processing method for compensating spherical divergence and ab-sorption in the time-frequency domain.

根据地震波振幅衰减随不同的频率成分有不同的吸收衰减特点，本文基于小波变换理论，提出了时频域球面发散和吸收补偿的处理方法。

There are kinds of noise disturbances in sensor output signal caused by pipe vibrations and fluid field turbulence. A few methods which can measure frequency through digital signal processing was mentioned in this paper, and wavelet transform method has finer application perspective.

由于管道的机械振动和流场的不稳定等因素，使得传感器输出信号中含有各种噪声，本文归纳了几种通过数字信号处理测量频率的方法，其中小波变换方法具有较好的应用前景。

Results showed that wavelet transform could be used to improve signal-to-noise ratio and to provide more perfect time-domain and frequency-domain information than conventional signal processing methods.

结果表明，在对小波系数的合理解释情况下，小波变换能有效地提高信噪比，并能提供比传统方法更为完整的时域和频域信息。