calcul-invariant

abc quantity to alpha beta conversion

DCT and Image Compression In the JPEG image compression algorithm, the input image is divided into 8-by-8 or 16-by-16 blocks, and the two-dimensional DCT is computed for each block. The DCT coefficients are then quantized, coded, and transmitted. The JPEG receiver (or JPEG file reader) decodes the quantized DCT coefficients, computes the inverse two-dimensional DCT of each block, and then puts the blocks back together into a single image. For typical images, many of the DCT coefficients have values close to zero these coefficients can be discarded without seriously affecting the quality of the reconstructed image. The example code below computes the two-dimensional DCT of 8-by-8 blocks in the input image, discards (sets to zero) all but 10 of the 64 DCT coefficients in each block, and then reconstructs the image using the two-dimensional inverse DCT of each block. The transform matrix computation method is used.

对涡旋光场光波传输进行仿真，对于不同拓普电荷情况仿真输出。(Lightwave transmission vortex light field simulation for different situations TOP charge simulation output.)

该MATLAB程序为冗余七自由度自由漂浮空间机器人运动学模型(The MATLAB program is a kinematic model of a redundant 7 DOF free-floating space robot)

说明：  本案例给出了振动信号的时域信号分析，fft分析，低通滤波分析和Hilbert包络分析代码，并将分析结果展现在一个图中进行对比。(This case gives the time domain signal analysis, FFT analysis, low-pass filter analysis and Hilbert envelope analysis code of vibration signal, and shows the analysis results in a figure for comparison.)

opracowanie wykresów i obliczeń do przesuwnia fazy

ss7 basics. Protocol Stack

Block-interleaver/deinterleaver according to the IEEE 802.11-2007 Defined by two step-permutation : The first permutation ensures that adjacent coded bits are mapped onto nonadjacent sub-carriers. The second ensures that adjacent coded bits are mapped alternately onto less and more significant bits of the constellation and, thereby, long runs of low reliability (LSB) bits are avoided. Tested and works well

MATLAB讲座：介面介绍，基础命令，常用数学函数，常用语句等(MATLAB Lecture: Interface description, basic commands, common mathematical functions, common statements, etc.)

single server queue program