LDPC码的完整的编译码，在MATLAB中求图像纹理特征，加入重复控制，采用热核构造权重，快速扩展随机生成树算法，FIR 底通和带通滤波器和IIR 底通和带通滤波器，计算多重分形非趋势波动分析。- Complete codec LDPC code, In the MATLAB image texture feature, Join repetitive control, Thermonuclear using weighting factors Rapid expansion of random spanning tree algorithm, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, Calculate the multifractal trend fluctuation analysis.