Laplacian Pyramid: Based on MATLAB, original codes realize the improved Laplacian Pyramid Decomposition and the method to embed hidden information into images.Codes show its significance in embedding hidden info into images.

laplacian pyramid\laplacian pyramid\cameraman.tif
.................\.................\DWT.m
.................\.................\embedtest.m
.................\.................\filtdn.m
.................\.................\image\pic.tif
.................\.................\.....\picins.tif
.................\.................\imageshow.m
.................\.................\lena128.bmp
.................\.................\lena256.bmp
.................\.................\license.txt
.................\.................\lp2vec.m
.................\.................\lpd.m
.................\.................\lpdec1.m
.................\.................\lpdemo.m
.................\.................\lpdemo_improve_system_hifreq.m
.................\.................\lpdemo_improve_system_lofreq.m
.................\.................\lpdemo_improve_system_lofreq_revise.m
.................\.................\lpdemo_original.m
.................\.................\lpr.m
.................\.................\lprec1.m
.................\.................\lprec1_old.m
.................\.................\lpr_old.m
.................\.................\..toolbox\filtdn.m
.................\.................\.........\imageshow.m
.................\.................\.........\license.txt
.................\.................\.........\lp2vec.m
.................\.................\.........\lpd.m
.................\.................\.........\lpdec1.m
.................\.................\.........\lpdemo.m
.................\.................\.........\lpr.m
.................\.................\.........\lprec1.m
.................\.................\.........\lprec1_old.m
.................\.................\.........\lpr_old.m
.................\.................\.........\pfilters.m
.................\.................\.........\README
.................\.................\.........\SNR.m
.................\.................\.........\upfilt.m
.................\.................\.........\vec2lp.m
.................\.................\lptoolbox.zip
.................\.................\pfilters.m
.................\.................\README
.................\.................\SNR.m
.................\.................\test.m
.................\.................\upfilt.m
.................\.................\vec2lp.m
.................\readme.txt
.................\laplacian pyramid\image
.................\.................\lptoolbox
.................\laplacian pyramid
laplacian pyramid

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