查询词典 focal point

As to the remaining parameters, two methods are developed: first, accepting that the projection function complies with a circular function within at least a part of a given field of view, constrained by the obtained object-to-image radial mapping and a constant focal length, the best-fitting point of the optical origin is tested along the optical axis; secondly, referring to the postulation of the exclusively bilateral mapping between an imaged point and its scenic sight ray, a measuring technique is developed to survey the world coordinates which will fabricate a projecting path to the imaged points located on the imageable region of the image plane in order to directly model the projection geometries involved.

而针对其余参数本文提出两种解题方法：其一是根据『在「部分视野角范围」内，鱼眼相机的投射模型符合一典型的「圆形函数」』以标靶实体与其影像尺寸为限制条件，测试光学轴上的最佳视觉参考点、鉴定最适当的投射模型、焦距、及有效的视野角度范围。其二是根据『一视野线排他性地与对应「呈影点」一一映射』参考一呈影点来搜寻空间中对应视野线的绝对座标后，据以演绎相机内部影像形成的模型。

The cause of the target fade-out in Neural Network nonuniformity correction scheme for infrared focal plane arraywas studied. Based on analyzing the strength and limitation of edge-directed NN scheme and nonuniformity correction combining one-point calibration and NN-NUC, a new combinational algorithm for nonuniformity correction was proposed.

中文摘要：分析了传统神经网络非均匀性校正算法在空域处理过程中产生目标退化的原因，在总结基于边缘指导的神经网络校正算法与一点定标和神经网络结合的校正算法的基础上，提出了新的组合校正算法。

The focal length f is the distance of the focus of an optical system from the assigned main point.

焦距f 是光学系统主点到焦点的距离。

The method blurs point-like targets of the nearby distance in the focal plan, while has little influence on distant point targets. So it can solve the problem that is hard for signal processing method. The parameters and simulation results are given.

该方法使近距离类点目标在像面上成模糊像，同时不影响远距离点目标的成像，从根本上解决了采用信号处理方法难以解决的虚警问题，给出了参数计算与模拟结果。

This part is the focal and difficult point of this thesis.

此部分是本研究的重点与难点之所在。

Aluminum foil in polychromatic overprinter photoelectricity scanner tracking color standard position correction and manipulation of order: first switched on automatically overprinter the total power switch device, open the channel computer power supply and track scan power, photoelectricity scanning head alignment reflector and adjust the distance from far and wide, so that the reflector to be rendered on the minimum light point, at which point the detection distance of about equal to the focal length of the photoelectricity scanning head.

铝箔众色套印洋差平电扫描器跟踪色不本场所订侧和操纵挨次为：不后不切断被迫套印安装的总电源开关，开放各通道计算机的把持电源和跟踪扫描电源，不兵平电扫描脚差准不直射不活，调度远近间隔，使不直射不活上表现的平不面最小，此时的检测间隔约即是平电扫描脚的焦距。

By taking the noise of an infrared focal plane detector as the main factor, an operating distance estimation equation for point targets is derived. A calculation example of the operating distance of a typical infrared detection system is given.

本文推导了以红外焦平面探测器噪声为主要因素的点目标红外探测系统的作用距离估算方程，结合实例求解了典型红外探测系统的探测系统的作用距离。

Conventional stereoscopic displays can cause viewers to experience eye fatigue and discomfort,as well as compromise image quality, because these displays require the viewers to unnaturally keep the eye focal length fixed at one distance while dynamically changing the convergence point of the left and right eyes to view objects at different distances.

传统的立体显示器需要观众人为地将眼睛的焦距固定在某一个距离，不断改变左、右眼收敛点来观察不同距离的物体，因此会造成眼疲劳和不适感，也降低了图像质量。

A calibration scheme of calibrating some parameters, such as the principal point, focal length, distortion, of star sensor is brought forward.

论文提出了一种对星敏感器的主点、焦距、一阶径向畸变等参数进行标定的方法。

How uses Kyd is the focal point which the fan cared, this 35 year-old veterans can glow the youth in Carlyle's general's subordinates?

如何使用基德则是球迷关心的焦点，这位35岁的老将能够在卡莱尔的麾下重新焕发青春吗？

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。