1) spectral extrapolation
频谱外推
1.
Then,spectral extrapolation is implemented using ISRA algorithm.
使用Wiener滤波复原算法恢复图像通带内的频谱分量,运用IS-RA算法实现频谱外推,通过一种频域校正算法,用Wiener滤波器恢复的频谱代替通带内的频谱,保证图像的低频分量不被破坏。
2.
Experiment results indicate that the algorithm is able to complete spectral extrapolation,and enhance super-resolution performance and spatial resolution.
为了解决毫米波被动成像中由于天线孔径尺寸和衍射受限所带来的固有空间分辨率低的问题,采用了一种改进的最大似然超分辨算法进行频谱外推。
3.
First,we employ Wiener filter to restore passband spectrum,then we implement Richardson-Lucy algorithm to complete spectral extrapolation, lastly we implement a spatial spectrum correction algorithm in which the calculated spectrum within the passband is replaced by the low frequency component restored by Wiener filter.
该算法首先使用Wiener滤波复原算法恢复图像通带内的频谱分量,然后运用Richardson-Lucy算法实现频谱外推,最后通过一种频域校正算法,用Wiener滤波器恢复的频谱代替通带内的频谱,保证图像的低频分量不被破坏。
2) nonlinear extrapolation in frequency space
非线性频谱外推
1.
Aiming at the problem,an improved method of nonlinear extrapolation in frequency space was proposed and applied to passive millimeter-wave image enhancement.
针对该问题,提出了一种改进的非线性频谱外推算法,用于无源毫米波图像增强。
3) spectrum extrapolation
谱外推
1.
Minimum entropy spectrum extrapolation techniq ue does not depend on any model.
最小熵谱外推技术是一种非参数方法。
4) extrapolation in Time Frequency Domain
时频外推
5) frequency extrapolating
频率外推
6) outer spectrum
外频谱
1.
Based on the joint probability distribution of wave height and outer frequency and the concept of energy outer distribution proposed by Sun Fu, the present paper defines a new kind of energy outer distribution, derives the analytical form of outer spectrum and discusses some of its properties.
基于孙孚提出的海浪波高与外观频率的联合概率分布及海浪能量的外观分布概念，定义了一种新的外观分布，导出了其外频谱的解析形式，并讨论了它的一些性质。
补充资料：外推
分子式：
CAS号：
性质：由一个函数的已有值求出其外侧的值的一种数学程序。若X是在一个很小范围内，函数可以用多项式或某种易于计算的函数很好地逼近。
CAS号：
性质：由一个函数的已有值求出其外侧的值的一种数学程序。若X是在一个很小范围内，函数可以用多项式或某种易于计算的函数很好地逼近。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条