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1)  complex wave number
复数波数
1.
Based on the definition of complex wave number and the generalized Huygens-Fresnel diffraction integral, the closed-form propagation equation of Hermite-Gaussian(HG) beams passing through a paraxial optical ABCD system without aperture, in which the linear gain and absorption media are included, is derived.
复数波数定义和广义惠更斯-菲涅耳积分出发,推导出厄米-高斯(HG)光束在介质中通过傍轴ABCD光学系统后的一般传输公式。
2)  complex wavelet
复数小波
1.
With six separable frequency bands of positive direction and negative direction tansformed by complex wavelet,six different feature information of terrain can be extracted.
利用复数小波变换的六个可分的正负方向频带,提取地形六个不同方向的特征信息。
2.
In this paper,the complex wavelet which has better directional ability is used in image denoising and the recovered images have higher PSNR and look better.
针对基于张量积小波域W iener滤波方向性差,从而导致去噪后图像边缘信息保持欠佳的问题,对复数小波的方向性质进行了分析,采用基于具有强方向性的复数小波域的W iener滤波的方法去噪,去噪后图像峰值信噪比和视觉质量较二维张量积小波去噪都有明显改善。
3.
A new image enhancement method aimed at optimizing contrast of image features while minimizing image noise is proposed in this paper based on complex wavelet transform.
针对目前的多尺度增强方法一般很难实现抑制噪声和凸显细节间有效均衡的问题,提出一种基于复数小波变换增强图像方法,充分利用复数小波兼具平移不变性和方向选择性的优势,首先通过相邻两层小波系数的相关性来有效区分噪声和图像边缘,并根据各层小波系数的分布设置局部阈值抑制噪声;在此基础上,自适应地选取增强函数来增强较弱的细节并保护原图像中的清晰边缘不产生失真。
3)  complex filtering
复数滤波
1.
Complex expression of SSB is deduced and the algorithm of complex filtering is put forward.
从单边带的数学表达式出发 ,推出了复数域的单边带数学表达式 ,从而提出基于复数滤波的单边带调制方法。
4)  Complex wave function
复波函数
5)  complex filter
复数滤波器
1.
Theory analysis and experimental results show that complex filter made of CGH instead of Fourier lens,integrates the second Fourier lens in the 4f system.
理论分析和实验验证表明,用计算全息透镜代替傅里叶透镜制得的复数滤波器,集成了4f系统中第2个傅里叶变换透镜的作用,滤波器后面不再用傅里叶透镜。
2.
The reference light is slant and parallel when the complex filter is being built for VLC.
VanderLugt光学相关器中含有两个傅立叶变换透镜 ,从输入面到输出面的光学长度是 4f,在制作复数滤波器时 ,参考光是一束倾斜入射的平行光。
3.
A design methodology of active-RC complex filter is proposed in this paper,with which one can determine the parameters of passive components quickly.
提出了一种采用有源RC滤波器实现复数滤波器时可快速确定无源器件参数值的设计方法。
6)  Complex notch filter
复数陷波器
补充资料:波数
分子式:
CAS号:

性质:原子、分子和原子核的光谱学中的频率单位。符号为σ或v。等于真实频率除以光速,即波长(λ)的倒数,或在光的传播方向上每单位长度内的光波数。其常用单位为cm-1,SI制单位为m-1。

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