Laplacian Pyramid: 用MATLAB实现并改进的图像拉普拉斯金字塔分解以及隐藏信息嵌入的源码。程序展示了laplacian pyramid decomposition 在图像嵌入隐藏信息的重要作用。 Laplacian Pyramid: Based on MATLAB, original codes realize the improved Laplacian Pyramid Decomposition and the method to embed hidden inform
We describe a technique for image encoding in which local operators of many scales but identical shape serve as the basis functions. The representation differs from established techniques in that the code elements are localized in spatial frequency