Laplace-pyramid

代码说明：

  拉普拉斯金字塔在图像融合中有所应用，方法是首先对两个待融合图像求拉普拉斯残差金字塔，然后用模板对每一级残差图像进行融合得到融合后图像的残差金字塔，然后对这个金字塔进行重构就能得到最终的融合图像，图像各尺度细节得到保留。（注：融合时模板一般会先用高斯函数模糊一下） 不过这里不实现融合，只实现拉普拉斯金字塔的建立。 (Laplace pyramid has applications in image fusion method is to first find two images to be fused Laplacian pyramid residuals, and then use the template for every level of residual image obtained after fusion image fusion residuals pyramid, then the pyramid will be able to get the final reconstructed image fusion, image detail is preserved for each scale. (Note: the fusion template will normally use the Gaussian blur it) But here is not to achieve integration, implementation only establish Laplace pyramid.)