The reliability of geometric algorithm is reduced by two reasons which are presenting inaccuration and computer′s floating operation.
几何对象的不精确以及计算机浮点运算生成的误差积累,势必会影响几何算法的可靠性。
The symplectic geometric algorithm and the Ronge-Kutta algorithm are examined from the viewpoint of the algebraic dynamical algorithm.
从代数动力学算法的观点考察了辛几何算法和龙格-库塔算法的保真问题。
The algorithm behind the 3d double-curvature design registers the intensity and orientation of light rays and assigns them to geometric principles.
三维双曲设计背后的运算法则显示了光线的强度和方向,并把这些与几何原理相结合。
We put forward an compression algorithm based on isosceles right triangle according to the geometric similarity of binary images.
针对二值图像的几何相似性,本文提出一种基于等腰直角三角形的压缩算法。
In this paper, we present the implementation of an algorithm, which can handle not only geometric simplification of models but also that of surface attributes, such as colors and textures.
本文实现一种算法,不仅能进行几何简化,还能简化模型的表面属性,包括:颜色和纹理。
Two factors are considered in cluster-validity criterion to enhance the robustness of algorithm and the validity of clustering, one is fuzzy membership and the other is geometric property.
新的目标准则函数考虑了数据集样本的模糊隶属关系和样本几何分布两个方面的因素,使算法的鲁棒性和分类的正确性大大加强。
This paper presents a new algorithm for geometric data compression.
本文提出一种几何数据压缩的新算法。
Interpolation on gray images is needed in the course of geometric operation. Bilinear interpolation algorithm is effective, but its program is complex and the running time is longer.
几何运算要求对图像进行灰度值插值,双线性算法可产生令人满意的效果,但是程序较复杂,运行时间较长。
A new watermarking detecting algorithm which resists geometric distortion is proposed, based on Fourier-Mellin transform and phase correlation features.
基于傅里叶-梅林变换特性和相位相关性,提出了一种新的抗几何失真数字水印算法。
This paper proposes an algorithm of iris automated identification and a method for rectification of geometric distortion of iris image. The matching result is measured by the relative coefficient.
提出了虹膜自动身份识别的算法及虹膜图像几何畸变的校正方法,最后用相关系数来测度图像的匹配结果。
The algorithm have large application value in the many fields such as models partition, constructing, geometric character distilling in CAD, the manufacture shop and robot motion track planing.
该算法在CAD模型分割、建造、几何特征提取、生产车间以及机器人运动轨迹规划等方面都有很高的应用价值。
According to the geometric features of synchronization position of answer card and structure element, some improvement on the original algorithm was made and the separating speed was decupled.
根据标准答题卡同步位和结构元素的几何特点,对算法进行了改进,将分割速度提高到原来的十倍。
The algorithm makes full use of geometric information of intersecting lines to speed up the calculation according to the arc height tolerance.
在跟踪求交的算法中充分利用了交线的几何特性,按等弓高误差快速精确地求取曲面上的交线。
In this algorithm, many basic geometric transformations of digital images are unified. These transformations include scaling, rotating, shearing, flipping, and mirroring, etc.
用这个算法可以处理的图像几何变换包括:图像旋转,图像变倍,图像剪切,以及图像翻转,镜像变换等。
The ant colony algorithm was used to carry on optimization design of four-bar mechanism for food machinery, analyzing and building the geometric relation between the linkage.
采用蚁群算法对食品机械四杆机构进行最优化设计,分析建立杆尺寸间的几何联系,并结合具体实例确定四杆机构各个参数。
A license plate location algorithm based on the combination of edge detection and projection is put forward by means of the geometric and texture information of the license plate area.
为了提高车牌定位的实时性和有效性,利用车牌的几何特征和纹理特征,提出了基于边缘检测和投影法相结合的车牌定位算法。
According to the range equation and Doppler positioning equation, geometric correction calculating expressions corresponding to ECS algorithm were derived.
根据距离方程和多普勒定位方程组推导了针对ECS成像算法的几何校正计算公式。
Experimental results show that the algorithm has more embedding capacity and robust to common attacks and geometric distortion.
实验结果表明该算法有较大的嵌入容量,对常规攻击和几何攻击都具有较强的鲁棒性。
At last, by generalizing our spherical parameterization algorithm and adaptive sampling scheme to the planar case, we can adopt image compression algorithms to compress geometric signals.
最后,通过把球面参数化算法和自适应采样算法扩展到平面,我们提出一种基于传统图像压缩技术的几何信号压缩算法。
Owing to the difficulties in extracting iris edge image, a new iris location algorithm using geometric symmetry feature and edge detection from gray scale image is presented.
针对虹膜二值边缘图像提取的困难,提出利用虹膜图像的灰度边缘图像以及虹膜的几何特征进行虹膜定位的快速算法。
The DM-decomposition algorithm is an automated geometric deduction method based on the DM - decomposition of bigraphs.
几何自动推理的DM-分解算法是一个基于偶图DM -分解的几何自动推理方法。
In order to optimize tolerance values for an assembly system, a model for geometric dimension tolerance optimization was established and an algorithm for optimal tolerance design was proposed.
为优化装配系统中公差链的公差值,建立了几何尺寸公差的优化模型,并提出公差的分层优化设计算法:第一层,解决设计公称值居中的优化问题;
This paper discussed in detail algorithm of geometric rectification by scanned topographic map based on teaching model with least squares method to heighten image quality and data accuracy.
针对扫描矢量化这一数据采集手段,以提高图像质量、数据精度为目的,以教学模型为基础,利用最小二乘原理,详细讨论了扫描后的地形图几何纠正算法。
In view of the fact that geometric entities are recorded in vector form in graphics file, this paper presents an algorithm based on modified geometric hashing for shape retrieval.
针对图形文件以矢量方式记录几何实体的特点,提出了一种基于改进几何哈希法的图形检索算法。
Experiments show that the algorithm has a better robustness on regular geometric attack.
实验表明,该算法对常规的几何攻击具有较好的鲁棒性。
Based on discrete algorithm, rapid algorithms for geometric mass property calculation are presented in this paper, which are very useful in products' parametric preliminary configuration design.
本文针对参数化总体设计,提出了基于离散算法的物性快速求解算法,解决了参数化设计中常见的几何特征值快速算法问题。
Based on discrete algorithm, rapid algorithms for geometric mass property calculation are presented in this paper, which are very useful in products' parametric preliminary configuration design.
本文针对参数化总体设计,提出了基于离散算法的物性快速求解算法,解决了参数化设计中常见的几何特征值快速算法问题。
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