DCT_Qutization_watermarking

牛顿法matlab版本的一个实例源代码，带轨迹收敛图。(a source code of newton algorithm by matlab )

Recognition eye about cyrcle eye

说明：  卷积实验代码 实现多种功能 包括线性卷积和圆周卷积的动态演示(convolutional code experimental realization of a variety of functions, including linear and circular convolution of dynamic convolution demo)

在故障诊断中，对振动信号进行小波分析时候需要用到的小波尺度谱应用程序。(In fault diagnosis, wavelet analysis for vibration signal when the need to use the application spectrum of the wavelet scale.)

This program support OFDM systems using 16QAM modulation. OFDM system utilize fft/ifft modules to transmit parallel data streams.

利用matlab程序编写可以实现找到曲线标记的方法以及可以指定坐标轴范围的程序。(Matlab programmers can use to find curves labeled realize Ways and axes can specify the scope of procedures.)

说明：  微分进化算法，用于参数优化、寻找极值等，可自行加入其他约束条件和修改目标函数(Differential evolution algorithm for parameter optimization, search extreme, can free to add other constraints and modify the objective function)

最小梯度下降算法，有测试实例，可以直接运行。求最小值，回归都可以(The minimum gradient descent algorithm, test cases can be run directly. For the minimum, return all OK)

低通巴特沃斯滤波器设计求阶数，适合广大学生们参考，(Low-pass Butterworth filter design requirements order, for the majority of students reference)

THis is a presentation on Viola Joans Method and SIFT method introduced by David.G.Lowe