Description: 计算机图形学（computer graphics, CG）是研究如何利用计算机算法来生成、处理和显示图形的一门学科，主要的算法原理包括基于光栅扫描显示器的基本图形的扫描转换原理；基于齐次坐标的二维、三维变换矩阵的几何变换原理；基于几何造型的自由曲线、曲面的生成原理；基于分形几何学的分数维造型原理；基于像空间和物空间的三维实体动态消隐原理；基于颜色模型、光照模型和纹理映射技术的真实感图形显示原理。-Computer Graphics (computer graphics, CG) is to study how to use computer algorithms to generate, process and display graphics of a subject, the main algorithms including those based on raster scan display basic graphics scan conversion principles based on the homogeneous coordinates of the Second dimensional, three-dimensional transformation matrix of the principles of geometric transformations based on the geometric modeling of free-form curve, surface generation principle based on fractal geometry, fractal dimension modeling principles based on space and objects like the space of three-dimensional entities, the principle of dynamic blanking based on the color model , light model and texture mapping techniques showed that the principle of realistic images. Platform: |
Size: 21568512 |
Author: |
Hits:
Description: 本文主要讨论在MATLAB软件中如何实现C程序源代码的移植。结合"道路平整度指数(IRI)预测问题"的实例,将C语言编写自仿射变换分形插值函数,移植(或改写)到MATLAB中,绘制出宁波机场道路平整度的预测图象,为解决预测问题可视化提供帮助。-This paper mainly discusses the MATLAB software, how to achieve C source code of the transplant. Conjunction with the road roughness index (IRI) a projection of the example of C language to self-affine fractal interpolation function transformation, transplantation (or rewritten) to MATLAB, the mapping out of Ningbo airport road roughness prediction image, To address the issue of visual projections to help. Platform: |
Size: 14336 |
Author:刘军 |
Hits:
Description: 频域法加入数字水印的原理是首先将原始信号（语音一维信号、图像二维信号）变换到频域，常用的变换一般有DWT、DCT、DFT、WP和分形。然后，对加入了水印信息的信号进行频域反变换（IDWT、IDCT、DFT、WP），得到含有水印信息的信号。-Frequency-domain digital watermarking method by adding the principle is that first of all, the original signal (voice signal of one-dimensional, two-dimensional image signal) to frequency domain transformation, commonly used in general transform DWT, DCT, DFT, WP and fractal. Then, adding the watermark information signal to the frequency domain inverse transform (IDWT, IDCT, DFT, WP), received signal containing the watermark information. Platform: |
Size: 2048 |
Author:laura |
Hits:
Description: 对二维平面上区域进行不规则四边形剖分,构造了区域到子区域的射影变换。由二元分形插值函数引入第三维的值,构成射影迭代函数系统。-Two-dimensional plane of the trapezoidal region subdivision to construct a regional to sub-regional projective transformation. By the binary fractal interpolation function the value of introducing a third dimension to form projective iterated function system. Platform: |
Size: 44032 |
Author:大棚 |
Hits:
Description: 对于遥感图像，研究了一种基于基于Contourlet变换和分形压缩方法，方法具有一定的实用价值，程序包中有实验图片。-For the remote sensing images, a kind of transformation based on Contourlet and fractal based compression methods, the method has some practical value, experimental pictures in the package. Platform: |
Size: 344064 |
Author:STYX |
Hits:
Description: 采用仿射变换通过反复循环分别绘制出植物生长模拟图和Sierpinsk三角形分形图案，是matlab的应用-Affine transformation by using repeated cycles of plant growth simulation were drawn map and Sierpinsk triangular fractal pattern, the application is matlab Platform: |
Size: 1024 |
Author:伊然默俪 |
Hits:
Description: 基本分形算法，步骤,包括分割算法，变换类型选择，编码和解码过程及c代码-basic fractal algorithm, procedure, including segment algorithm, transformation type choice, coding and decoding process, and also the prime codes Platform: |
Size: 295936 |
Author:candies |
Hits:
Description: 计盒分形维数计算的matlab源代码编程实现过程-Function [Fdgen NoisfreFD ]=fractaldim(y,Q,M)
__________________________________________________________________________
Usage: Computes fractal dimension by box counting(BC) method.
NOTE: Running the code may take a little time, because it calculates
dimensions for all embedding dimensions up to M.
This code is based on an algorithm that constructs a box for the first
observation and for other observations test which it belongs to previous
box(s). If the observation belongs to one of the existent boxes then
increases number of points in the relevant box,otherwise makes a new box. the algorithm of this code uses only rounding down and it does not need
binary coding, sorting and so on. It uses only transformation data to [0,2^32-1] and finding valid boxes based on Leibovich and Toth(1989). Inputs: y is a vector time series. q stands for generalized dimension q=1 entropy dimension,q=2 correlation dimension and so on. q=0 is box counting dimen Platform: |
Size: 25600 |
Author:panwangsheng |
Hits:
Description: 分形图像编码是一个相对较新的图像压缩技术。在分形图像编码中，通过利
用自然图像中存在的不同子图像间的跨尺度相似性（即把图像视为分形） ，一幅图
像用一个使图像近似不变的压缩仿射变换
的参数来表达，压缩文件中储存的是这
些参数的量化值而不是图像本身的象素值-Fractal image coding is a relatively new image compression technology. In fractal image coding, by Lee
Similarity with the cross-scale natural images exist between different sub-images (ie, images deemed fractal), a picture
Like using a compressed image to approximate the same affine transformation
parameters to express, compressed files are stored in this
Quantization values of these parameters instead of the image pixel values themselves Platform: |
Size: 1943552 |
Author:李永科 |
Hits:
Description: 被誉为大自然的几何学的分形( fractal) 理论是现代数学的一个新分支。分形的概念最早是由美籍数学家曼德布罗特( B. B. Mandelbort) 提出 ， 分形是指部分与整体以某种方式相似的形体。自相似原则和迭代生成原则是分形理论的重要原则。它表征分形在通常的几何变换下具有不变性， 即标度无关性。分形维数是分形理论中的主要参数， 分形维数反映了复杂形体占有空间的有效性， 它是复杂形体不规则性的量度。(The fractal (fractal) theory, which is known as the geometry of nature, is a new branch of modern mathematics. The concept of fractal was first proposed by the American mathematician, Mandelbrot (B. B. Mandelbort), which refers to a form that is similar in some way to the whole. The principle of self similarity and the principle of iterative generation are the important principles of the fractal theory. It characterizes the invariance of the fractal under the usual geometric transformation, namely the scale independence. Fractal dimension is the main parameter in fractal theory. Fractal dimension reflects the validity of the occupied space of complex form, and it is the measurement of the irregularity of complex shape.) Platform: |
Size: 7168 |
Author:张子晨55 |
Hits:
Description: 包含用matlab编写的一些分形图如雪花图和矩形变换图等，还有物体运动图像包括变速与恒速，还包括三维动图，如卫星图像等(It contains some fractal maps written by MATLAB, such as snowflake diagram and rectangle transformation diagram, and so on. There are also objects moving pictures, including speed and constant speed, and three-dimensional moving diagrams, such as satellite images, etc.) Platform: |
Size: 323584 |
Author:oath473 |
Hits:
Search - fractal transformation