image-construction-by-fft-and-wt

Data Encryption by Matrix Multiplication We will only use numbers 0 to 26 for the encryptive mathematics operation. Numbers from 1 to 26 are for letters from A to Z and 0 is for all non-letter characters. To minimize usage of numbers, all letters are converted to upper case. The original message is converted to number array according to the ASCII table and minus 64. We partition whole array into blocks of 8 numbers. The last block may be added several zeros. Then multiply each block by the an 8x8 matrix A which is invertible in Z27 to get cipher data. The decryption is the same process except to use its inverse matrix B. For good visual reading, we convert all non-letter characters to under score for the decryption.

Mammography is one of the available techniques for the early detection of masses or abnormalities which is related to breast cancer. Breast Cancer is the uncontrolled of cells in the breast region, which may affect the other parts of the body. The most common abnormalities that might indicate breast cancer are masses and calcifications. Masses appear in a mammogram as fine, granular clusters and also masses will not have sharp boundaries, so often difficult to identify in a raw mammogram. Digital Mammography is one of the best available technologies currently being used for the early detection of breast cancer. Computer Aided Detection System has to be developed for the detection of masses and calcifications in Digital Mammogram, which acts as a secondary tool for the radiologists for diagnosing the breast cancer. In this paper, we have proposed a secondary tool for the radiologists that help them in the segmentation and feature extraction process.

This is FSK simulink

satellite globe visualization earth

广义预测控制(GPC)是一种鲁棒性强、能够有效地克服系统滞后、可应用于开环不稳定非最小相位系统的先进控制算法，但由于它需要Diophantine方程计算、矩阵求逆和最小二乘的递推求解，因此计算量很大，本程序针对此缺陷提出四种不基于对象模型且实时性高的广义预测控制快速算法(Generalized Predictive Control)

二次规划的matlab源代码，很有用的优化工具！(Quadratic programming matlab source code, very useful optimization tool!)

现代通信系统使用MATLAB全部程序 源文件(All modern communication systems using MATLAB program)

捷联惯导系统的初始对准的程序，加入了算法描述，方便大家使用。(SINS Alignment programmer)

用matlab绘制基于Golay结构的综合孔径系统中的孔径形状，包括单孔,三孔，四孔，六孔，九孔等综合空寂光学系统中的所有基本结构(using matlab to paint the circle system based on Golay structure)

SRGB 数据转换为RGB数据的源代码，适合色彩学相关人员使用(SRGB data into RGB data, source code, suitable for school-related personnel to use color)