Description: 演示了一张有趣的简笔自画像是如何生成的。该画像的线条极其不规则,不能用一条简单曲线来近似。-demonstration of an interesting portrait of Jane T is generated. The portrait of extremely irregular lines, which can not be a simple curve approximation. Platform: |
Size: 76706 |
Author:yugang |
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Description: 最小平方近似法 (least-squares approximation) 是用來求出一組離散 (discrete) 數據點的近似函數 (approximating function)，作實驗所得的數據亦常使用最小平方近似法來達成曲線密合 (curve fitting)。以下所介紹的最小平方近似法是使用多項式作為近似函數，除了多項式之外，指數、對數方程式亦可作為近似函數。關於最小平方近似法的計算原理，請參閱市面上的數值分析書籍-least square approximation (least-squares approximation) to get a group of discrete (discrete) data point to the approximate function (approximating function), the experimental data are often using the least square approximation to reach a secret curve (curve fitting) . Outlined below are the least square approximation is used as a polynomial approximation functions, in addition to polynomials, the index several right formula may be used as a similar function. On the smallest square approximation calculation principles, please refer to the numerical analysis of the market books Platform: |
Size: 3072 |
Author:三米 |
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Description: 演示了一张有趣的简笔自画像是如何生成的。该画像的线条极其不规则,不能用一条简单曲线来近似。-demonstration of an interesting portrait of Jane T is generated. The portrait of extremely irregular lines, which can not be a simple curve approximation. Platform: |
Size: 76800 |
Author:yugang |
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Description: 这是介绍神经网络的入门材料，里面包括MATLAB原程序来解决曲线拟合问题和函数的逼近-This is to introduce the neural network entry materials, which include the original MATLAB program to solve the problem of curve fitting and function approximation Platform: |
Size: 202752 |
Author:wlx |
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Description: 进行分段三次Hermite插值和分段三次Spline插值，比较F-C取导数方法所得到期收益率曲线逼近中债结算公司的到期收益率曲线的效果的程序-Hermite interpolation for sub-three and three sub-Spline interpolation, comparing FC take derivative curve approximation method, due in settlement of debts due the company s procedures for the effect of yield curve Platform: |
Size: 3072 |
Author:youyouhun |
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Description: When working with mathematical simulations or engineering problems, it is not unusual to handle curves that contains thousands of points. Usually, displaying all the points is not useful, a number of them will be rendered on the same pixel since the screen precision is finite. Hence, you use a lot of resource for nothing!
This article presents a fast 2D-line approximation algorithm based on the Douglas-Peucker algorithm (see [1]), well-known in the cartography community. It computes a hull, scaled by a tolerance factor, around the curve by choosing a minimum of key points. This algorithm has several advantages:
这是一个基于Douglas-Peucker算法的二维估值算法。-When working with mathematical simulations or engineering problems, it is not unusual to handle curves that contains thousands of points. Usually, displaying all the points is not useful, a number of them will be rendered on the same pixel since the screen precision is finite. Hence, you use a lot of resource for nothing! This article presents a fast 2D-line approximation algorithm based on the Douglas-Peucker algorithm (see [1]), well-known in the cartography community. It computes a hull, scaled by a tolerance factor, around the curve by choosing a minimum of key points. This algorithm has several advantages: It is a Douglas-Peucker algorithm based on two-dimensional valuation algorithm. Platform: |
Size: 429056 |
Author:成东 |
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Description: 数值分析中实现对给定数表进行插值、曲面拟合、逼近，最终拟合出最接近的曲线方程-Numerical analysis to achieve a given number of table interpolation, surface fitting, approximation, the final fitting out of the nearest curve equation Platform: |
Size: 603136 |
Author:王陶 |
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Description: 连续曲线近似地刻画或比拟平面上离散点组所表示的坐标之间的函数关系的一种数据处理方法。用解析表达式逼近离散数据的一种方法-Continuous curve approximation to characterize or compare groups of discrete points on the plane expressed by a function of the relationship between the coordinates of a data processing method. Approximation using the analytical expression of a method of discrete data Platform: |
Size: 34816 |
Author:xie |
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Description: Bezier curves are the most fundamental curves, used generally in computer graphics and image processing. These curves are mainly used in interpolation, approximation, curve fitting, and object representation. In this article, I will demonstrate, in a very simple and straightforward way, how one can construct these curves and make use of them. Platform: |
Size: 59392 |
Author:srhg |
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Description: 用遗传算法优化神经网络权值 最后实现逼近sin函数曲线-Neural network using genetic algorithm optimization to achieve the right of the value of the final function curve approximation sin Platform: |
Size: 293888 |
Author:无名 |
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Description: 写程序用折线段逼近方式画如下平面曲线：
(1) ，(可以转化为显示表达式)
(2) ，(可以转化为显示表达式)
(3) , 。
注：用OpenGL的画线函数画线段；步长、窗口大小由大家自己确定；如果需要平移或放大缩小，可以直接对折线顶点的坐标值进行平移和缩放，也可以调用OpenGL的函数进行平移或缩放。
-Write a program segment with folded planar curve approximation method draw is as follows: (1), (which can be converted to show the expression) (2), (which can be converted to show the expression) (3),. Note: Draw a line function with the OpenGL-drawing line segments step, the window size is determined by us ourselves If you need to pan or zoom, you can directly on the polyline vertex coordinates to pan and zoom, you can also call the OpenGL functions to pan or scaling. Platform: |
Size: 253952 |
Author:我行我素 |
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Description: This code is for the curve fitting with least square sense algrorithm. Using the measurment data, end-user can get the curve (1st order~ 4th order approximation) Platform: |
Size: 1024 |
Author:jay |
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Description: visual c++实现BP神经网络，可以绘出误差曲线，逼近曲线-visual c++ to achieve BP neural network, can draw the error curve, approximation curve Platform: |
Size: 31744 |
Author:Joy |
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Description: 贝赛尔曲线的拆分是指将贝赛尔曲线分解成逼近的多边形。可以用来判断贝赛尔曲线的选中，以及显示贝赛尔曲线的旋转效果等。
贝赛尔曲线的每一个顶点都有两个控制点，用于控制在该顶点两侧的曲线的弧度。所以本函数的顶点数组的记录方式是：控制点＋顶点＋控制点＋控制点＋顶点＋控制点＋……。所以两个顶点之间的曲线是由两个顶点以及两个顶点之间的控制点来决定的。
-Bezier curve is split down into the Bezier curve approximation polygon. Bezier curves can be used to judge selected, and the Bezier curve shows the rotation effects. Bezier curves of each vertex has two control points, used to control both sides of the vertex curvature of the curve. Therefore, the function of the vertex array of the recording are: the control vertex points+ point+ control+ control+ control point vertex points++ ... .... Therefore, the curve between two vertices consists of two vertices and control points between two vertices determined. Platform: |
Size: 73728 |
Author:dangdang |
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Description: 程序首先发现图像轮廓，然后用椭圆逼近它。是在vs2008下所以图片地址要用f：\\##类似格式-Program first found image contour, and then use elliptical approximation of it. Under the so pictures in vs2008 address to use f: \ \## a similar format Platform: |
Size: 5120 |
Author:朱文良 |
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