用移动网格来计算简单的Laplace方程，通过AFEPack实现-Moving Mesh ； Laplace

Contourlet变换思想，选用拉普拉斯塔式滤波器结构对图像多分辨率分解来捕捉奇异点。-Contourlet transform thinking, the choice of Laplace tower filter structure for multi-resolution images to capture the singularity exploded.

Encode a value that is assumed to be the realisation of a Laplace-distributed random process.