Description: 计算机图形学大作业，一、 调用画点的函数，用DDA、中点算法画直线和中点算法画圆和椭圆。二、多边形扫描转换算法和区域填充算法实现。三、线段裁剪和多边形裁剪算法的动画演示实现。四、交互式的二维直线求交：如果存在交点，用实心圆显示交点，并用文字显示其坐标。五、自行车行走和绕固定点旋转的自旋转物体动画。六、简单三维图形系统：凸多面体的建模、透视投影，隐藏面的消除及基本图形变换（平移、旋转、缩放）。七、交互式Bezier曲线的输入绘制程序实现
-Computer Graphics big operation, a point of calling a function of painting with DDA, the mid-point algorithm for drawing a straight line and the mid-point algorithm drawcircle and elliptical. Second, polygon scan conversion algorithm and region filling algorithm. Third, cutting line and polygon clipping algorithm to achieve the animated demo. Fourth, interactive two-dimensional linear intersection: If the existence of intersection, with a solid round show Nodal, and text display its coordinates. Fifth, walking and bike rotating around a fixed point of self-rotating object animation. Sixth, a simple three-dimensional graphics system: convex polyhedron modeling, perspective projection, hidden surface elimination and basic graphics transform (translation, rotation, scaling). Seven, interactive input Bezier curve drawing program Platform: |
Size: 3697664 |
Author:ling |
Hits:
Description: 基于光线投射变换的三维模型特征提取,以三维模型的重心为球心的最小包围球剖分成一系列同心球壳，落入每个球壳的射线与模型表面的交点定义一个球坐标方程。一般地，对于每条射线，它与模型表面的多个交点同时落入一个球壳的几率大大降低了，这样就可以尽可能的减少信息的丢失。-Transform-based ray-casting feature extraction of three-dimensional model to three-dimensional model for the core focus of the post-mortem into the smallest ball surrounded by a series of concentric spherical shell, falling into the hands of each spherical shell model of the surface-ray intersection with the definition of a spherical coordinate equation. In general, for each ray, the surface of it with the model number of intersection points falling into the hands of a spherical shell at the same time greatly reduces the probability that such a reduction could be as much as possible the loss of information. Platform: |
Size: 1310720 |
Author:周光有 |
Hits:
Description: constructing "meshlab" 3D module using background and foreground image and camera parameter.
1.For the silhouette extracted from each view, construct the chessboard distance transform map using 4-neighbor distance for the extracted silhouette
2.Construct the octree-based visual hull of the object using volume intersection
3. Convert the octree-based volume representation to a triangular mesh surface representation using marching cubes
4. Use the multiple views to attach the object image texture to the 3D object mesh surface Platform: |
Size: 17451008 |
Author:ace |
Hits:
Description: Nurbs曲线/曲面在反求参数上的数值不稳定性,是Nurbs曲线/曲面的致命缺点.该文介绍了用于参
数曲线/曲面求交的活动仿射标架(moving affine frame,简称MAF)方法.基于MAF方法的原理,提出了反求
Nurbs曲线/曲面参数的一种新方法.该方法在数值稳定性和效率上均高于各种传统的迭代法,并已应用于商
品化三维CAD系统GEMS 5.0.
-Nurbs curve/surface parameters in reverse numerical instability, is Nurbs curves/surfaces fatal shortcomings. This paper describes the parameters for the curve/surface intersection of the activities affine frame (moving affine frame, referred to as MAF) method based on the principle of MAF method proposed reverse Nurbs curve/surface parameters of a new method, which in numerical stability and efficiency were higher than all the traditional iterative method, and has been used in commercial three-dimensional CAD system GEMS 5.0. Platform: |
Size: 37888 |
Author:周保兴 |
Hits:
Description: 一些GIS计算公共方法
判断两个矩形是否相交
判断两个线段是否相交
判断点是否在面内
判断线与面是否相交
判断线与矩形是否相交
判断点是否在线上
计算线段的地理方位角-GIS calculation method to determine some of the public to judge two rectangles are intersected to determine the intersection point of two line segments are in the plane to determine whether the line intersects with the surface to determine whether the line intersects with the rectangle is calculated to determine the point whether the line segment on the geographical azimuth Platform: |
Size: 4096 |
Author:zwd |
Hits:
Description: 绘制庞加莱截面图，在相空间中适当（要有利于观察系统的运动特征与变化，如截面不能与轨线相切，更不能包含轨线）选取一截面，在此截面面上某一对共轭变量如x1与x.1取固定值，称此截面为Poincare截面，相相空间的连续轨迹与Poincare截面的交点成为截点。
-Draw the Poincare sections in phase space appropriate (should be beneficial to observe the motion of the system characteristics and changes, such as the cross section can not be tangent to the trajectory, not to include the rail line) to select a cross section in this cross-section surface of a The intersection of conjugate variables such as x1 and x.1 to take a fixed value, said continuous path of the cross section for the Poincare surface of section phase space and Poincare cross-section cut-off point. Platform: |
Size: 1024 |
Author:本质 |
Hits:
Description: hough变换是实现图像边缘检测的一种有效方法，其基本思想是将测量空间的一点变换到参量空间中的一条曲线或一个曲面，而具有同一参量特征的点交换后在参量空间中相交，通过判断交点处的积累程度来完成特征曲线的检测，-hough transform to achieve image edge detection of one kind of effective method The basic idea of the measurement space point conversion to the parameter space, a curve or a curved surface, and the points with the same parameters characteristic exchange in the parameter space intersect throughthe degree of accumulation of the judgment at the intersection to complete the detection of the characteristic curve, Platform: |
Size: 51200 |
Author:tiancai |
Hits:
Description: 用C++编写的实现计算机图形学中的直线，自由曲线，bezier曲线，nurbs曲面，填充，裁剪，显示直线交点等基本功能。-The realization of the c++ write computer graphics, linear, free curve, bezier curve, nurbs surface, filling, cutting, show the basic function such as straight line intersection point. Platform: |
Size: 2383872 |
Author:D.bin |
Hits:
Description: Qhull computes the convex hull, Delaunay triangulation, Voronoi diagram, halfspace intersection about a point, furthest-site Delaunay triangulation, and furthest-site Voronoi diagram. The source code runs in 2-d, 3-d, 4-d, and higher dimensions. Qhull implements the Quickhull algorithm for computing the convex hull. It handles roundoff errors from floating point arithmetic. It computes volumes, surface areas, and approximations to the convex hull.-the latest version Platform: |
Size: 12902400 |
Author:CX |
Hits:
Description: Computer Graphics: The geometry of the shape must be defined by implicit functions. You must use
in the function script at least one set-theoretic intersection, one union and one
difference operations implemented using min / max functions. Using symbols of
these operations ( | and & ) is not allowed.
The geometry of the shape must be created using at least one ellipsoid,
cylinder, cone, box, and blobby object.
A 3D texture defined by an explicit displacement function has to be applied to
the shape.
The color of the shape must vary across the shape’s surface and be defined by
parametric functions. Platform: |
Size: 2048 |
Author:yanqing |
Hits:
Description: 摄影测量学要解决的两大问题是几何定位和影像解译。几何定位就是确定被摄物体的大小、形状和空间位置。几何定位的基本原理源于测量学的前方交会方法，它是根据两个已知的摄影站点和两条已知的摄影方向线，交会出构成这两条摄影光线的待定地面点的三维坐标。影像解译就是确定影像对应地物的性质。-Photogrammetric space resection based on two known photographs of two known sites and photography direction of the line, the three-dimensional coordinates of the intersection of these two photographic light constitutes Pending ground points. Image interpretation is to determine the nature of the surface features of the corresponding image. Platform: |
Size: 323584 |
Author:lily |
Hits:
Description: 拟合球面，知道不同的球体方程之后可以很直接求出，交点坐标。-Fit the spherical surface, know that different sphere equation can be directly obtained after the intersection point. Platform: |
Size: 1024 |
Author:王康 |
Hits:
Description: RaySAR是一种能够产生SAR图像层的3D合成孔径雷达（SAR）模拟器
与详细的3D对象模型相关。 此外，它可以将3D位置和表面定位
相关点与反射雷达信号有关。(RaySAR is a 3D synthetic aperture radar (SAR) simulator which enables to generate SAR image layers
related to detailed 3D object models. Moreover, it enables one to localize the 3D positions and surface
intersection points related to reflected radar signals.) Platform: |
Size: 71894016 |
Author:hemon
|
Hits:
Description: RaySAR是一3D合成孔径雷达（SAR）仿真程序，基于matlab实现。(RaySAR is a 3D synthetic aperture radar (SAR) simulator which enables to generate SAR image layers
related to detailed 3D object models. Moreover, it enables one to localize the 3D positions and surface
intersection points related to reflected radar signals.) Platform: |
Size: 1024 |
Author:hemon
|
Hits:
Description: 简单判断线与面的关系以及面与面的关系，并且有开窗功能，保留相交线(A simple judgement of the relationship between line and surface, as well as the relationship between the surface and the surface, and the function of windowing, preserving the intersection line.) Platform: |
Size: 157696 |
Author:Dreamer2373 |
Hits:
Description: Mall-Kendall以气候、下垫面一致为前提，要求序列随机独立且同分布，用于突变点的识别。
UFk为一条随k变化的曲线，当n增加时，UFk很快趋于标准正态分布。
假设H0成立。给定显著性水平α，查算正态分布表得。当|UFk|＜时，接受原假设，即趋势不显著；反之，拒绝原假设，即趋势显著。
在坐标轴上绘制两条曲线，若相交，则交点为突变点。这就是Mall-Kendall法。(Mall-Kendall to climate and underlying surface consistent is the premise of independent and identically distributed random sequence requirements for point mutation identification.
UFk is a K with the curve, when n increases, UFk has quickly become the standard normal distribution.
The establishment of H0 hypothesis. A given confidence level, check the normal distribution table. When |UFk| <, accept the null hypothesis, that trend is not significant; on the other hand, reject the null hypothesis, namely a significant trend.
Draw two curves, in the axis if the intersection, intersecting point for point mutation. This is the Mall-Kendall method.) Platform: |
Size: 1024 |
Author:纸飞机018 |
Hits:
Search - surface intersection