Bidegaray-Fesquet-Hierarchie_de_modeles_en_optiqu

本文论述并设计实现了一个脱机自由手写体数字识别系统。文中首先对待识别数字的预处理进行了介绍，包括二值化、平滑滤波、规范化、细化等图像处理方法；其次，探讨了如何提取数字字符的结构特征和笔划特征，并详细地描述了知识库的构造方法；最后采用了以知识库为基础的模板匹配识别方法,并以MATLAB作为编程工具实现了具有友好的图形用户界面的自由手写体数字识别系统。实验结果表明，本方法具有较高的识别率，并具有较好的抗噪性能。(In this paper, and design implementation of a freely Offline handwritten numeral recognition system. First, identify the figure of the pre-processing treatment were introduced, including binarization, smoothing filtering, standardization, refinement, such as image processing method Secondly, to explore how to extract the structural features of characters and stroke characteristics, and described in detail Knowledge of the construction method Finally the use of a Knowledge-based template matching to identify methods and MATLAB as a programming tool to achieve with a friendly graphical user interface of freely handwritten numeral recognition system. The experimental results show that this method has higher recognition rate, and has better anti-noise performance.)

信号与系统基础知识包括连续信号与模型、离散信号与模型；常用信号变换包括Z变换、Chirp Z变换、FFT变换、DCT变换和Hilbert变换等；离散系统结构包括IIR、FIR和Lattice结构；IIR滤波器设计包括模拟和数字低通、高通、带通与带阻滤波器设计，以及基于冲激响应不变法和双线性Z变换法的IlR滤波器设计等；FIR滤波器设计包括基于窗函数、频率抽样法和切比雪大逼近法的FIR滤波器设计；平稳信号分析包括经典功率谱估计、基于参数模型的功率谱估计和基于非参数模型的功率谱估计；非平稳信号分析包括STFT变换、Gabor展开、Wigner-Ville分布与Choi-Williams分布；非高斯信号分析包括基于非参数法的双谱估计、基于参数模型的双谱估计，以及双谱估计的应用；信号处理的GUI实现包括滤波器设计与分析的FDATool工具和滤波器设计与信号分析的SPTool工具。(signals and systems based on knowledge, including continuous signal with the model, discrete signal and model; Common signals include transform Z transform, chirp Z-transform, FFT transform. DCT and Hilbert transform; Discrete system architecture including IIR, FIR and Lattice structure; IIR filter design, including analog and digital low-pass, high-pass, band-pass and band stop filter design, Based on the impulse response of the same law and bilinear Z transform the IlR filter design; FIR filter design including on the basis of the window function, frequency sampling and snow all over the big approximation of FIR filter design; stationary signal analysis include classical power spectrum estimation, Based on the model parameters of the power spectrum estimation and non- parametric model b)

说明：  高斯滤波器对图像的去噪效果,具有很好的效果。(denoise on filter of gaussian)

Westerberg分析自由度的资料，自适应处理入门兄弟的好资料，呵呵(Westerberg et al. (1979) approach is used to analyze the Degrees of Freedom (DF) of both the individual units of a process flowsheet and the entire flowsheet.)

说明：  用于空时自适应处理，对J_Ward的空时自适应处理报告中的部分内容进行了仿真测试(For space-time adaptive processing, J_ward's space-time adaptive processing report is simulated and tested)

自己编的直方图均衡化matlab源码，可以实现图像的直方图均衡(own addendum to the histogram equalization Matlab source, the image histogram equalization)

old-winner的无线信道模型仿真matlab程序(old-winner of the radio channel model simulation matlab program)

雷达系统分析与设计第一版matlab程序，涉及到RCS、天线方向图设计等该内容。(radar systems and analysis and design using matlab first edition)

ofdm 非常详细的程序，有很多子程序，很经典，有用哦！(ofdm simulation)

说明：  此代码为17年全国大学生数学建模竞赛A题程序(This code is a 17-year National College Students Mathematical Modeling Competition A program)