该代码完成基于拉普拉斯四层分解的图像融合算法，采用C语言，可用于嵌入式linux系统的开发环境下。-The code is based on the Laplace four complete decomposition of image fusion algorithm, using C language can be used in embedded linux system development environment.

It draws on principal component analysis algorithm (PCA), Codec ldpc code implementation Pisarenko harmonic decomposition algorithm.