A plane surface approximation method for image coding and its quad tree scheme are presented in this paper.
该文提出了一种平面逼近图像编码方法及其四叉树实现方案。
The response surface approximation models are used to replace the original complex vehicle performance model, the optimization is conducted using a sequential quadratic programming algorithm.
通过响应面近似模型的优化，完成了高超声速巡航飞行器的多学科设计优化。
The paper emphasizes on the methods of polynomial surface approximation which is part of numerical approximations, and analyzes the precision of polynomial function model through the measured data.
着重介绍了数值逼近方法中的多项式曲面函数模型逼近法，并通过实测数据对多项式函数模型的精度进行分析。
This result can be combined with subdivision method to obtain a piecewise interval polynomial approximation for a rational surface.
这一结果可以与细分技术相结合，得到有理曲面的分片区间多项式的逼近。
Then we study the accuracy of Kirchhoff's approximation in the scattering of light field from the random self-affine fractal surface.
在此基础上，对采用基尔霍夫近似进行自仿射分形随机表面的散射光场数值计算的精确程度进行了研究。
The study results show that the approximation of constant flux layer can not come into existence basically in the surface layer over vegetation land.
结果表明：理论的核心——近地层为常数通量层的近似假设在有植被陆面上是基本不成立的。
Multiple scattering from two-dimensional rough surface with large surface root mean square(RMS) slope is studied with Kirchhoff approximation.
利用基尔霍夫近似研究了表面均方根斜率较大的二维粗糙面的多次散射问题。
This paper presents an algorithm of acquiring depth map using linear approximation based on gray level information. Using the algorithm, surface reconstruction can be easily realized.
该文提出了一种用线性逼近方法、基于灰度信息从图像获取物体深度信息，从而实现物体三维表面重建的算法。
The result after solution of the correspondence, branching and tiling problems is a triangular mesh that is a piecewise planar approximation of a surface consistent with the contours.
解决了这三个问题就可以得到基于轮廓数据的三角网格模型，它是原始轮廓对应的曲面的分片逼近表示。
Exact solution of a statistical model for laser beam scattering from diffusing surface has been obtained, the comparison with the approximation of center of gravity has been made.
本文对激光束在漫射表面上散射的一类统计模型给出了严格解，并与“质心近似”所得结果作了比较。
Optimization techniques are being applied to solve the problems of surface interpolation, approximation, smooth joining and fairing, aiming at corresponding goal functions.
只要选用相应的目标函数，曲面插值、逼近、拼接和光顺都可以使用优化技术统一处理。
Adaptive sampling algorithm of surface play an important role in evaluation of profile deviation and surface triangular approximation.
曲面轮廓度误差评价和多边域逼近均要求对理论曲面进行数字化自适应采样。
Both range and its standard deviation are calculated according to surface energy approximation and mean energy approximation.
用表面能量近似和平均能量近似从背散射谱上计算了射程深度和射程分布的标准偏差。
The most important thing making use of DTM is to guarantee validity; the accuracy of DTM is degree of approximation of DTM'surface and actual terrain surface.
利用DTM最重要的是保证它的真实性， DTM精度是指数字地面模型与实际地形表面的逼近程度。
Secondly, analysed the approach model, described circular arc approximation method, approaching blade curved surface with this method and realized raise of the approach speed.
其次，分析了逼近模型，推导了单圆弧逼近方法，用这一方法来逼近叶片曲面，提高了逼近速度。
Numerical examples give evidence that these conditions can effectively control form of surface in smooth approximation for implicit algebraic surfaces.
数值例说明这些保凸条件在隐式曲面光滑逼近中能有效地控制曲面。
Exploiting the relation between MGF of the received signal-to-noise ratio (SNR) and SER, the lower bound of SER is obtained by utilizing the approximation of complex cap surface in this dissertation.
利用接收信噪比矩母函数和误符号率之间的关系，并且对复球体的球帽表面积做近似处理得到误符号率的下边界。
In this paper, moving least square (MLS) approximation is applied to simulate the complete characteristic curves of reversible pump turbine based on the surface fitting.
本文在基于曲面拟合的水泵水轮机全特性曲线的变换新方法的基础上，将移动最小二乘近似应用于对全特性的曲面拟合。
With the Fresnel diffraction approximation method, the influences of the collimated lens and standard lens surface errors on the transparence testing are analyzed in Fizeau interferometer.
根据菲涅耳衍射近似理论，就菲佐干涉仪中的准直镜和标准镜面形误差对透过检测的影响进行了研究。
The generation of a Bézier curved surface with the fixed area is approached as an approximation problem.
讨论了带有面积约束的光顺曲面造型方法。
The generation of a Bézier curved surface with the fixed area is approached as an approximation problem.
讨论了带有面积约束的光顺曲面造型方法。
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