查询词典 developable surface

It is defined by the direct distance between image surface and a threshold surface which should be constructed first.

通过构造一个阈值曲面，用图像曲面与阈值曲面间的有向距离来定义符号距离曲面。

It includes an optimized curve fitting algorithm based on the least-squares method and a surface lofting algorithm in which a interpolation function is employed to provide a continuous variation of the parameter in one direction over the entire lofted surface.

基于最小二乘法，对截面数据进行均方误差下的精确优化拟合；在曲面蒙面算法中，采用插值函数确定蒙面曲面一个方向的参数。

Since the B-spline is a locally supported function, the smoothing formula can be strictly limited in a neighborhood of each point. The smoothing surface defined by the smoothing formula has the same convexity as that of the original image. Secondly, the edge points are detected by either computing the local extremum points of the directional derivative or computing zero-crossing of the second-order directional derivative of the smoothing surface. Finally, an example of an edge detector is given.

针对反卷积视觉模型的病态性，增加了适当的约束，给出了基于低松弛迭代格式的快速自适应滤波算法，对于一个N×N输入图象，由于变换核的局部支撑性质以及低松弛迭代格式的引入，使得快速自适应滤波算法的计算复杂度降为象素个数N〓的线性量阶N〓，就最小二乘算法的复杂性而言，优于不动点迭代算法的O以及基于FFT的预处理共轭梯度算法的O。

A algorithm of dim small targets detection in infrared image is proposed. Image is processed by using median filter and unsharp mask. The infrared image intensity surface is fitted by Haralickd discrete orthogonal polynomial basis function,and then the maximum points are detected on the fitted intensity surface by convolving the image with the second order directional derivative operators.

提出一种红外弱小多目标图像检测方法，图像先经过中值滤波、高提升滤波增强处理，再用基于Haralick离散正交多项式曲面拟合图像，拟合曲面的极大值点即目标点，可以利用导出的二阶方向导数算子与图像进行卷积得到。

A solid bounded by two parallel planes and such a surface,especially such a surface having a circle as its directrix.

圆柱体由两个平行平面和这样的表面，特别是有一个圆作为其准线的平面所形成的柱体

First, we extend the general finite element method from the function surface to the parameter function. Second, we bring this kind of method into the design of rational Bézier minimal surface. Third, we transform the problem of Dirichlet energy function into the problem of minimizing a discrete objective function.

首先推广了函数曲面中的有限元方法，进而研究如何针对参数曲面使用有限元方法，并把该方法引入到有理Bézier极小曲面造型的设计中，从而将连续的Dirichlet能量函数极小化问题，转化为一个离散形式的目标函数的极小化问题。

The simulation results of smooth metal surface with roughness of 1.6 μm accord with the experimental data very well, but the simulation results of rough metal surface with roughness of 6.8 μm disaccord with the experimental data.

对于表面粗糙度为6.8 μm的较为粗糙的金属表面，仿真出的结果和实验中获得的数据相差较大。

Finding out the maximum point of the equivalent plastic strain on each of the vertical lines, a group of discrete points on the critical slip surface will be obtained. Last, the discrete points are smoothed by means of the thin-plate smoothing spline; and the position of the critical 3D slip surface is determined.

最后，采用被称为薄板光顺样条(thin-plate smoothing spline)函数的插值方法对滑面上的离散点进行了插值光顺处理，在不指定边坡滑动模式和滑面形状的前提下就可以得到三维边坡的临界滑面。

ABSTRACT In this dissertation, the architecture of the robot model machining system is introduced, and the surface reconstruction, triangulating the discrete surface, process planning and path planning in the machining system is deeply and systematically investigated.

本论文对机器人模型加工系统的组成结构、模型加工中的曲面重建、空间离散点曲面的三角划分以及模型加工的工艺规划和路径规划等方面，进行了系统、深入的研究。

Know to all, the way to bond disjunct advertising poster surfaces, we usually use mucilage, such as the 502 glue to join them together in one, but the means have a lot of disadvantages, such as:(1)Almost all of these kinds of bond are harmful on human health;(2)When work, the operation is slow and is not too satisfied in strength with the glue, to get a good strength, usually we must proceed a special handling, such as whet the surface to make the surface not smoothed, so it may cost more workers;(3)The air temperature may influence the stick strength, in low temperature environment, the bond effect maybe bad.

知道所有的方式，债券间断表面的广告海报，我们通常使用粘胶，如502胶加入他们在一起，但手段有很多缺点，如：（ 1 ）几乎所有这些种债券是有害于人类健康；（ 2 ）当工作，行动是缓慢的，而不是太满意的强度与胶水，得到良好的强度，通常我们必须特别处理，如刺激的表面，使表面不光滑，因此它可能花费更多的工人；（ 3 ）空气温度可能会影响到坚持的力量，在低温环境中，债券可能坏的影响。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。