compute_homography

相机在轨道上沿轨道（管状）运动； 右键可以选择不同视角观察和退出，有两个视角；(Camera on the track along the orbit (tubular) movement Right you can choose a different perspective and exit, there are two perspectives )

最大类间方差法是由日本学者大津(Nobuyuki Otsu)于1979年提出的,是一种自适应的阈值确定的方法,又叫大津法,简称OTSU。它是按图像的灰度特性,将图像分成背景和目标2部分。背景和目标之间的类间方差越大,说明构成图像的2部分的差别越大,当部分目标错分为背景或部分背景错分为目标都会导致2部分差别变小。(The largest between-class variance method was proposed by the Japanese scholar Nobuyuki Otsu in 1979. It is an adaptive threshold determination method, also known as the Otsu method, or OTSU for short. It is based on the grayscale characteristics of the image and divides the image into two parts: the background and the target. The larger the variance between the background and the target, the greater the difference between the two parts that make up the image. When the part of the target is wrongly divided into backgrounds or part of the background is mis-divided into goals, the difference between the two parts will be smaller.)

四邻域加权平均算法 实现了图像的高质量重采样(resample function)

说明：  一个关于地形LOD渲染得例子，给出了渲染得全部代码(a rendering of the terrain in LOD examples given in all rendering code)

osg cookbook 中的源代码，里面有OSG和CG的结合，OSG和CEGUI的结合，OSG与QT的结合以及PHYSX的结合。(the source code of OSGCOOKBOOK,include integration of OSG and CG,CEGUI,QT and physx)

说明：  课程设计的主要内容为开发一个实时绘制大规模三维场景的程序系统.必做部分： 1、学习3DS Max 的基本功能，并采用3DS Max 对三维场景进行建模，要求 场景中包含建筑物、道路、天空等基本元素，实现场景的纹理贴图功能。 2、通过3DS Loader 读取场景数据。。 3、学习并使用OpenGL 或DirectX 3D 实时绘制上述场景。 4、提供用户界面，并实现场景的交互漫游功能。 选做部分： 1、在场景中添加了三维地形。 2、实现雾这种气象条件的实时绘制。 3、实现计算机动画技术，飞机在天空中飞，圆环在不停的运转。 4、阴影的绘制 5、在场景中添加了喷泉。 6、实现Billboard 绘制技术。 7、添加了美妙的背景音乐。 (The main content of curriculum design for the development of a real-time rendering system of procedures for large-scale three-dimensional scene (running Interface, refer to Figure 1), including part and the election will be made part (where part of the requirements to achieve Optional 2 to 3 Or more than function). Will be part of: 1, learning the basic functions of 3DS Max, and three-dimensional scene using 3DS Max for modeling, requirements Scene includes buildings, roads, skies and other basic elements, to achieve the texture mapping function of the scene. 2, read the scene data by 3DS Loader. . 3, learn and use OpenGL or DirectX 3D real-time rendering the scene. 4, provide the user interface and interaction to achieve the scene roaming. Optional parts: 1, in the three-dimensional terrain scenes added. 2, the fog that weather conditions to achieve real-time rendering. 3, the realization of computer animation technology, aircraft flying in the sky, circle in)

说明：  shepp-logan的2D直接傅里叶反变换法(Shepp-logan 2-D Direct Fourier Inverse Transform Method)

log算子检测斑点程序，程序可读性好，检测结果也不错，可以自行加载自己的图片进行检测(log operator to detect the spots on the program, the program readability test results are good, you can load your own picture to detect)

用vtk+QT实现的MarchingCubes面绘制和光线投射体绘制，图形化洁面。(Surfacce rendering with MarchingCubes, Volume rendering with ray-casting, using QT+ VTK)

制作人工散斑模拟图，很实用，可直接实用。(Production of artificial speckle simulation maps, very practical, direct and practical.)