Based On Cluster Algorithm Image Interpolation Examination Engineering Research

The digitized technology and the computer technology rapid development,becomes day by day simple to the image revision operation,The ordinary computer user may revision digital image content,and can achieve confuses falsehood with the truth degree.if some malicious interpolation image is abused,slightly to individual privacy,as big as influence social stability,even possibly to the national politics,the military and so on many aspects had the bad influence,Therefore society's development already was now urgent needs to carry on the distinction to the digital image authenticity,take differentiated the genuine and fake picture to become an extremely popular research direction as the goal image blind evidence collection technology.The digital image interpolation way is many and varied,in which copy-paste is in the digital image interpolation one of most main interpolation methods,The digital image copy-paste interpolation basis duplicates the region the origin different to be possible to divide into with the image copy-paste interpolation and the different image copy-paste interpolation.The digital image interpolation examination method mainly has: Exhaustion search method,autocorrelation examination law,based on DCT examination law and so on,these methods carries on the examination from the different aspect to the digital image interpolation,but all has the examination order of complexity to be high,accurate not higher question.This article in view of the image interpolation one common way---copy-paste,proposed calculates the analysis using the cluster algorithm to picture sample principal component analysis(PCA),according to its similar examination image whether is tampered with.Its flow is: First carries on the image the overlap piecemeal,in which piecemeal size is same,then withdraws each image block the principal components to take corresponding characteristic vector,after dictionary sorting,to the image block western-style distance carries on the similar measure,determined tampers with the region.The experimental result indicated that,this method can effectively the localization and the examination image interpolation region,simultaneously after the compression,revolving,increases the white Gaussian noise,Gauss fuzzily and so on the interpolations the commonly used post-processing operation,has the suitable robustness.