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- low spatial frequency profile 低空间频率曲线
- Using cube corner arrays to restraining wave front aberration of low spatial frequency 用角锥棱镜阵列抑制低频波前畸变
- low spatial frequency 低空间频率
- It includes topics such as spatial frequency filtering, holography. 它包括空间频率滤光、全息摄影。
- Luminance masking and spatial frequency masking were considered in our scheme. 此方法考虑了人的视觉所具有的亮度屏蔽和空间频率屏蔽特性。
- Using a method of the spatial frequency filtering by combining the directional filtering with the very low frequency filtering, the desirable optical signals cau be taken out of a considerably complex image. 采用方向性滤波与极低频滤波相结合的方法;可以从较复杂的图象中提取所需用的信号.
- The TES instrument has fairly low spatial resolution: a pixel is several kilometers across. TES仪器的空间解析度相当低：一个像素大约代表数公里。
- The results revealed mild lowering contrast sensitivity at high spatial frequency for our glaucoma patients. 然而特定轴度之闪光眩耀测试结果并未见明显差别。
- The Collins formula and tensor ABCD law in spatial frequency domain provide the relation between the input spatial Fourier spectrum and the output spectrum directly. 空间频率域中的柯林斯公式和张量ABCD定律直接给出了像散光束的空间傅里叶频谱的传输规律。
- The government is trying to keep a low profile on this issue. 政府力图在这个问题上保持低姿态。
- Analyzed is the dependence of the defocusing quantity on the hologram size and the spatial frequency bandwidth of the object. 分析了全息图尺寸及其记录的空间频带宽度与离焦量的关系;
- The diffraction of surface acoustic waves in Raman-Nath regime on acoustic grating with linearly chirped spatial frequency is investigated. 本文将声表面波声栅上的Raman-Nath衍射现象研究发展到其周期的空间频率为线性变化的声栅情形。
- The effects of radial position and the axial length of the electrode on the temporal frequency bandwidth are similar to the spatial frequency domain. 在时间频域内测量系统相当于带通滤波器,电极的轴向长度和颗粒径向位置对频带宽度的影响与空域频率特性相似;
- Third, the wider view range of the 3rd person viewpoint helped players (either high or low spatial ability) positively when they had to refer the direction signs for wayfinding tasks. 3.;除此之外，本研究亦发现，由于第三人称视角的视野范围较广，因此对于受测者观察指向标示具有正面的影响；
- Method Modulation transfer function (MTF) was used to analyze the spatial frequency transfer characteristics of CT and MRI. 调制传输函数可对线性影像系统的频率传输特性进行描述。
- A new spatial frequency analysis method based on wavelet was applied to homomorphic filtering to enhance the contrast of ICT image. 针对ICT图像对比度低、边缘模糊、细节不清晰等问题,提出采用基于小波的同态滤波算法来对图像进行增强。
- A method of super-resolution imaging is described, which utilizes cosine fringes to acquire more spatial frequency spectrum of the object. 研究了一种高分辨率成像的方法，该方法利用余弦条纹照射目标以获取目标更宽的频谱。
- Dinucleotide frequency profile vector 双核酸频率特征向量
- Nyquist frequency defined as the highest spatial frequency where the sensor can still faithfully record image detail. Beyond the Nyquist frequency aliasing occurs. 奈奎斯特频率的定义是：感光器能够忠实纪录影像细节的最高空间频率。在此频率以上就会发生混肴现象。
- And when disc jockeys speed up or slow down songs, they alter the frequency profiles that Shazam relies on. 而且，音乐节目主持人有时会让歌曲加快或放慢，这就会改变沙札姆所仰赖的频率特性。
