daqiqiu

用于相机标定的两种经典算法的源程序：张正友法和Tasi法(Used for camera calibration source of the two classical algorithms: Zhang Zheng-you Law and Tasi France)

speech recognition matlab code. m file

数字基带系统将数字信号从时域上看时数字滚降，需要画出滚降前后的波形展示出来。频域上带宽变化了。输入滤波器之前的波形与采样判决之后的波形。采样判决前的频谱。 采样判决后的码型。 2、眼图（采样判决之前的眼图）（信噪比大眼图清晰） 3、误码曲线，（横坐标时信噪比，纵坐标时误码率） 4、Arfa变化对误码特性的影响，变好还是变差(变好)，眼图清晰度变化（清晰），传递函数的带宽的变化。（带宽越大）(1.Digital baseband system point of view the digital signal from the time domain when the number of roll-off, you need to draw the waveform displayed before and after the roll-out. The frequency domain, the bandwidth change. Input filter and sample ruling before the wave after wave. Sample pre-judgment spectrum. Sampling pattern after the verdict. 2, the eye diagram (eye before sampling decision) (SNR big eye clear) 3, the error curve (abscissa when the signal to noise ratio, bit error rate when the vertical axis) 4, Arfa impact of change on BER performance, get better or worse (getting better), change of eye-definition (clarity), the transfer function of the bandwidth changes. (The greater the bandwidth))

matlab gui 界面的人脸的采集，通过点击人眼中心，实现识别(matlab gui interface face acquisition, by clicking on the eye center, to achieve recognition)

％ A 2D homogeneous convection-diffusion case (u=exp(-ex*deta*x-ex*deta*y) with a square with ％ all Dirichlet boundary, note that reaction coefficient is not zero ％ by indirect BKM ( A 2D homogeneous convection-diffusion case (u = exp (-ex* deta* x-ex* deta* y) with a square with all Dirichlet boundary, note that reaction coefficient is not zero by indirect BKM)

This package implements vectoriel quantization according Self Organizing Map paradigm It allows to : 1. generate a codebook training images set 2. reconstruct a test image according to the generated codebook 3. ute the Peak Signal to Noise Ratio (PSNR) between the test image and the image obtained after quantization 4. estimate execution time of this process

TIP41技术资料 够全面 一看就懂 (TIP41 technical information comprehensive enough to understand at a glance)

实现了Buck变换器的三种仿真，分别使用了电力系统模块工具，SIMULINK根据系统状态方程，s函数建立Buck变化器的三种仿真模型。(Buck converter simulation.)

C++ For Dummies is an introduction to the C++ language. C++ For Dummies starts from the beginning (where else?) and works its way from early concepts and through more sophisticated techniques. It doesn’t assume that you have any prior knowledge, at least, not of programming.

各种人脸识别的matlab程序，改动后可以跑得通。根据自己的需要进行选择。(Various face recognition matlab program, changes can run through. Choose according to their needs.)