多边形近似,polygonal approximation
1)polygonal approximation多边形近似
1.A novel split-and-merge method with ranking selection(RSM) is proposed for the polygonal approximation of curves.将遗传算法的排序选择策略引入到传统的拆分与合并算法,提出一种基于排序选择策略的拆分与合并算法(RSM)来求解平面数字曲线的多边形近似,解决了传统的拆分与合并算法对初始解的依赖问题。
2.A new polygonal approximation approach based on the Binary QPSO was also presented,having solved the restriction of the search bound in BPSO.用二进制具有量子行为的粒子群算法求解平面数字曲线的多边形近似,解决了传统BPSO算法中粒子搜索范围受限的问题。
3.First the tumor area is calculated by polygonal approximation, some value of area are approximated by Tchebyshev multinomial algorithm to get the expression about the change of area, then the volume of tumor is obtained by integral in the CT scope which contains the tumor.首先对分割得到的肿瘤区域采用多边形近似法计算肿瘤面积,并通过采样的部分面积数据进行切比雪夫多项式最小二乘拟合,获得反映肿瘤面积变化规律的多项式,将多项式在包含肿瘤的切片范围进行积分计算肿瘤体积,在较少的数据量条件下提高了测量的精度。
英文短句/例句

1.Blood Cells Image Decomposition Based on Circular Assumption and Polygonal Approximation基于圆形假设和多边形近似的血细胞图像分解
2.Improved Competitive Hopfield Neural Network for Polygonal Approximation Problem用改进的竞争Hopfield神经网络求解多边形近似问题
3.Fast Polygonal Approximation of Digital Curve Based on Polarization Cornerity Index利用极化角点指数进行数字曲线快速多边形近似
4.The method is that the polygon region approximate to the pending image region and calculating the polygon area to get the image area.采用鼠标多边形作图法近似圈定待处理的图像区域。
5.Most viruses are spherical or roughly spherical.多数病毒呈圆形或近似圆形。
6.The quality of approximation is as good as polygonal boundary reduction, and it can process the data online in a constant buffer.算法具有多边形约简算法相同的优良的近似质量,并可在固定数据缓冲区空间内在线运算。
7.The Whole-region Method of Chaotic Time Series for Slope Deformation Prediction边坡变形预测的混沌时间序列全局近似方法
8.Survey on Polygonal Approximation of Digitized curves数字曲线的多边形逼近方法研究进展
9.Often F has some form of self-similarity, perhaps approximate or statistical.分形集合通常具有某种自相似形式,多半是近似的或统计意义下的。
10.Prandtl's boundary-layer approximation普兰特尔边界层近似法
11.A method to estimate vacancy-cluster formation energy of metals一种近似计算金属多空位形成能的方法
12.Approximate Calculation of Deflection in Orthotropic Plate of Right Triangle with Simply Supported Edge简支边直角三角形正交各向异性板挠度近似计算
13.Having a shape approximating that of a helix.近似螺旋形的,近似螺旋线的
14.Study of Approximate Fundamental Solution of Orthogonal Polynomials in Dynamical BEM动力边界元法的正交多项式函数的近似基本解研究
15.Research of Spatial Index Method Based on the Convex Polygon Approach基于凸多边形逼近的空间索引方法研究
16.The performance is similar to the "Festive Lantern".其表演形式与"花灯"近似,
17.any object having a shape similar to a plane geometric figure with four equal sides and four right angles.一个外形近似于平面几何中的正方形的物体,即有四个相同的边和四个直角。
18.The code above is the same as the square we set up in the last lesson; but with the added texture coordinates.上面的代码和上节课设置多边形的代码很相似,但添加了纹理坐标。
相关短句/例句

polygon approximation多边形近似
1.The problem of polygon approximation was formulated as one of minimizing cost function.将曲线多边形近似问题转换为最小化代价函数的问题,利用模拟退火算法对其求解最优解,并采用启发式方法将曲线的局部特征作为先验知识引入退火过程加速其收敛。
2.After filling in the edge pixels and eliminating image disturbances, a fast polygon approximation algorithm was implemented to get the polygon of the target with fixed angles for recognition.提出了改进的多阈值八邻域像素比较边线检测算法,对得到的边缘像素进行填充,并在跟踪过程中消除轮廓上的短校及图像干扰,最后采用快速多边形近似算法,用多边形顶角及目标形状因子作为特征对目标进行识别。
3.The object contour issplit into curve segments by a coarse-to-fine polygon approximation algorithm and the mo-ment invariants of each segment are extracted as the feature vector.该方法利用多边形近似方法将目标轮廓分段,抽取目标轮廓每一小段的不变矩作特征,利用动态规划技术在段间距离表中寻找最佳路径,确定所有的匹配对,这些匹配对序列构成了目标与模型的局部匹配,可从局部匹配中计算匹配可信度。
3)approximate polygon method多边形近似法
4)error-bounded polygonal approximation误差约束多边形近似
5)similar polygons相似多边形
6)Polygonal approximation多边形逼近
1.A PSO algorithm for polygonal approximation of digital curves restricted by solution of reference;参照解约束下数字曲线多边形逼近的PSO算法
2.Based on polygonal approximation,the recursion formula to calculate a stepping motor s winding current to achieve a constant torque over all positions is deduced,which is used in a real time calculating application,then the control design is given.基于圆的多边形逼近,导出了步进电动机恒力矩细分驱动时各相电流值的递推公式,实现绕组电流的实时计算控制,并给出了控制器原理图。
3.The contour tracing algorithm which can recognize those points on the left side and the right side of the contour is presented,and the polygonal approximation algorithm and the quadratic Bezier curve approximation algorithm are described,which utilize the direction of chain codes.对二值和多值图象的边界跟踪和逼近问题作了探讨;提出了可识别边界线上左右边缘点的边界跟踪算法、利用链码的矢量性的多边形逼近算法和二次Bezier曲线逼近算法。
延伸阅读

凹多边形Image:11534686683212413.jpg 凹多边形
把一个各边不自交的多边形任意一边向两方无限延长成为一直线,如果多边形的其他各边不在此直线的同旁,那么这个多边形就叫做凹多边形。凹多边形的内角和的解,其实我们可以通过(n-2)·180来计算。实际上是把大于平角的角划分为两个角(如图)