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基于Matlab实现的数字图像处理教程，具有极强的参考价值。是从数字图像处理到机器视觉的进阶之路。(A textbook of Digital Image Processing,implemented by employing Matlab, a top language of Image Processing)

1 SIFT 发展历程 SIFT算法由D.G.Lowe 1999年提出，2004年完善总结。后来Y.Ke将其描述子部分用PCA代替直方图的方式，对其进行改进。 2 SIFT 主要思想 SIFT算法是一种提取局部特征的算法，在尺度空间寻找极值点，提取位置，尺度，旋转不变量。 3 SIFT算法的主要特点： a) SIFT特征是图像的局部特征，其对旋转、尺度缩放、亮度变化保持不变性，对视角变化、仿射变换、噪声也保持一定程度的稳定性。 b) 独特性(Distinctiveness)好，信息量丰富，适用于在海量特征数据库中进行快速、准确的匹配[23]。 c) 多量性，即使少数的几个物体也可以产生大量SIFT特征向量。 d) 高速性，经优化的SIFT匹配算法甚至可以达到实时的要求。 e) 可扩展性，可以很方便的与其他形式的特征向量进行联合。 4 SIFT算法步骤： 1） 检测尺度空间极值点 2） 精确定位极值点 3） 为每个关键点指定方向参数 4） 关键点描述子的生成 本包内容为sift算法matlab源码(1 SIFT course of development SIFT algorithm by DGLowe in 1999, the perfect summary of 2004. Later Y.Ke its description of the sub-part of the histogram with PCA instead of its improvement. 2 the SIFT main idea The SIFT algorithm is an algorithm to extract local features in scale space to find the extreme point of the extraction location, scale, rotation invariant. 3 the main features of the SIFT algorithm: a) SIFT feature is the local characteristics of the image, zoom, rotate, scale, brightness change to maintain invariance, the perspective changes, affine transformation, the noise also maintain a certain degree of stability. b) unique (Distinctiveness), informative, and mass characteristics database for fast, accurate matching [23]. c) large amounts, even if a handful of objects can also produce a large number of SIFT feature vectors. d) high-speed and optimized SIFT matching algorithm can even achieve real-time requirements. e) The scalability can be very convenient fe)

Induction machine power 50 kw in matlab simulink work on

学习元胞自动机的好程序，尤其对于新手。可以和生命游戏等一起结合来入门学习。(Simulation of forest fire.)

基于matlab的卡尔曼滤波算法的理论介绍和仿真实践，对于信号处理专业的学生入门有帮助(kalman filtering)

matlab 概率统计技术，适合初学者学习(matlab probability and statistics techniques suitable for beginners to learn)

FFT编程实例 进行FFT变换，显示频谱图 (FFT transform FFT programming examples show that the spectrum graph)

The objective of this project is to design and simulate a single phase half-bridge switched power supply for driving a series of CET coils. The power supply will act like a current source and the switching frequency fs = 1/Ts of the output voltage waveform equals 2.78 MHz.

现代编码调制作业，不同信噪比下的信道容量计算(Modern coding and modulation operations, different SNR channel capacity calculation)

空间谱估计算法中MUSIC解相干算法中的后向平滑空间算法，提高了MUSIC算法对解相干信号的估计性能(MUSIC spatial spectrum estimation in the post-Coherent algorithm space algorithm to smooth and improve the MUSIC algorithm for coherent signal estimation performance)