ImageRetrieval

Matlab下的costas载波提取程序 (The costas under Matlab carrier extraction procedures)

KL展开随机场的程序，利用伽辽金法计算，几个类型的相关函数(The program of KL expansion random field is calculated by Galerkin method)

说明：  用离散相似法对弹性阻尼系统进行仿真与隐性欧拉公式进行比较(Similar method using discrete simulation of the elastic damping system compared with the implicit Euler formula)

一些常用的matlab程序，对于入门学者有很大的帮助，每一个程序均有详细的说明(Some commonly used matlab program for entry scholar of great help, every program has a detailed description)

Divide/Create data into training and testing data which are balanced basing on the labels.

哈工大的高频地波雷达的仿真程序，可分别计算目标和海洋回波的功率谱密度，以及噪声。(HIT high-frequency ground wave radar simulation program can calculate the target and the power spectral density of sea echo, and noise.)

pi/4-QPSK的恒模盲均衡matlab代码，并附有说明(pi/4-QPSK constant modulus blind equalization matlab code together with explanation)

说明：  用Matlab实现灰度图像SIFT（尺度不变特征变换）特征点的提取(Grayscale images with Matlab SIFT (Scale Invariant Feature Transform) feature point extraction)

该程序提供了核熵成分分析的matlab实现，可应用于机器学习(Kernel Entropy Component Analysis)

a self- embedding block wise fragile watermarking scheme with tamper detection and content recovery capability. The proposed scheme embeds the shuffled extensive ten bit Recovery data and two bit Authentication data of the image block into the least significant bits (LSB) of its corresponding mapping block.The integrity of a test block is decided by comparing 2×2 non overlapping block of the test block with its corresponding mapping block. Experimental results show that the suggested scheme outperforms conventional self recovery fragile watermarking algorithms in alteration detection as well as in tamper recovery of the image.