基于空间频率的方法估计纹理的自相关函数。
Methods based on spatial frequencies evaluate the coefficients of the autocorrelation function of the texture.
本工作希望了解噪声在各空间频率通道中对体视的影响。
We attempted to understand the effect of noise on stereopsis in different spatial channels.
本文对用音叉作为空间频率调制器的可行性进行了研究。
The feasibility was studied for the tuning fork to be used as Space Frequency Modulator for the use of measuring the depth of plate.
②定义了能够反映图像之间区域相似程度的空间频率比概念。
The spatial frequency ratio which could reflect regional similarity among images was defined.
采用连分式近似，可以得到空间频率域的有限差分深度偏移方程。
The finite difference depth migration equation in space-frequency domain can be derived when the radical expression is approximated by continued fraction.
掌纹中不同区域的纹线方向和空间频率代表着掌纹图像内在的特征。
Ridge orientations and ridge spatial frequencies in various regions of the palm represent the intrinsic characteristics of a palmprint image.
给出了不同运动速度和对比度下预测人眼空间频率通道的经验公式。
Empirical formulas predicting the spatial channels of the human visual motion system at different velocities and contrasts of the objects being observed are presented.
并对空间频率特性与蟾蜍行为之间的关系和生物学的意义做了初步探讨。
The relationships between the spatial frequency response features and toad's behaviors, and the biological significance were discussed.
研究了钢丝绳弯曲疲劳历程中，磁导率在不同空间频率区间的变化规律。
The law ofpermeability changes of different frequency range was studied during the wire rope fatigue test.
目的研究时间频率和空间频率对扫描图像翻转诱发电位视力准确度的影响。
Objective To investigate the effect of spatial and temporal frequency on the Sweep pattern visual evoked response acuity (SPVER-A).
每组光栅的对比度、空间频率、显示时间，移动速度和反相频率能单独控制。
Contrast, spatial frequency, presentation time, moving velocity and phase reversal frequency of each grating are controlled independently.
在阵列信号处理中，提取回波信号中的空间频率，可以得到目标的方位信息。
In processing of array signal, Direction of Arrival (DOA) of target can be obtained by extracting spatial frequency of echo.
目的探讨字频、空间频率、笔画数和近视程度对汉字图片辨认正确率的影响。
Objective To investigate the influence of word frequency, spatial frequency, character strokes and myopia status in identifying Chinese characters.
本文提出利用变空间频率直线干涉条纹对目标成像的方法，并用实验进行验证。
In this paper, a method imaging with variant space frequency linear interferometric fringe is presented and is demonstrated by experiments.
本文提出了一种新型的基于空间频率和数学形态学算子的多聚焦图像融合算法。
A new multi-focus image fusion method using spatial frequency (SF) and morphological operators is proposed.
选择适当的记录条件可以对含有多种空间频率条纹的二值图像获得较好的重构效果。
Retrieved image with good visual effect can be obtained for the digital image containing several space frequencies under proper recording conditions.
当周期物体的单胞空间频率交叉项比主频率项小到可忽略的程度时，角度限制失效。
If the cross terms of the spatial frequencies for the unit cell of periodical object are much smaller than the main frequency terms, the restriction of the Angle is not necessary.
定量比较斜视性弱视猫两眼驱动皮层细胞的最优空间频率、时间频率及其整合时间。
The optimal spatial frequency, optimal temporal frequency and integration time of the cortical neurons driven by two eyes of strabismic amblyopes were quantitatively measured.
运用影像线性空间频率计算各震区活动断裂、线性影像与地震震级的相关系数在0。
By using the space frequency of linear image, the correlation coefficients of the frequency to earthquake magnitud are calculated, the values of which are 0.
从空间频率通道的观点出发，也可推导出对比灵敏度是和条纹长度的平方根成正比。
The results indicated that the sensitivity is appoximately proportional to the square root of the length of grating. And so does the result derived from Fourier analysis and spatial-frequency channel.
本实验是利用两块空间频率相同的黑白光栅产生的莫尔条纹来测量长焦距透镜的焦距。
In this experiment, we use two gratings with the same frequency to generate Moire fringes and use them to measure the long focus length of lens.
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。
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.
分数傅里叶变换同时包含了空间域和空间频率域信息，分数相关也可以用于光学图样识别。
The fractional Fourier transform contains the spatial information and the spatial-frequency information simultaneously. The fractional correlation can be used to optical pattern recognition too.
着重论述空间滤波检测器的基本原理和热电偶空间滤波器空间频率特性的数学推导及分析。
The fundamental principle of spacial filling, mathematical descriptions and analyses of thermocouple spacial filter are given.
皮层下神经元的去抑制整合野参与传递视觉图像中的低空间频率信息，并与色觉恒定性机制有关。
The disinhibitory IF of subcortical neurons contributes to transmission of low spatial frequency information of visual images and tO the maintenance of color constancy.
根据光学传递函数、调制度和空间频率视觉及对物象的感知程度，制作TIFF格式透视灰度图。
According to optical transfer function, degree of modulation and apperceive degree of space frequency vision vs object image, TIFF grayscale scenograph is made.
通过多维全息调制板对空间频率进行调制，完成物-频-像的变换过程，可实现空间假彩色编码。
Modulation of spatial frequency by means of multidimensional holographic modulating board can bring about transformation from object via frequency to image and implement pseudo-color coding.
利用激光散斑空间频率的频分多路传输技术，能够在一张散斑图上记录物体多次变形的全场位移信息。
A method using the frequency divtion multiplexing technique of the laser speckle's spatial frequency to record multiple displacement information on a single specklegram is presented.
该方法从红外成像系统信号传递方程出发，模拟生成不同空间频率、辐射温度的标准四周期矩形样条；
Standard four periodical rectangular patterns with typical spatial frequency and radiometric temperature were generated according to signal transfer equation.
在低空间频率范围内，后者和前者的探测率比近似等于SPRITE探测器的调制传递函数，接近于1。
The result indicates that the ratio of the detectivities is approximately equal to the modulation transfer function of SPRITE detectors in the region of low spatial frequency, which is near 1.
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