Image Acquisition on Unearthing Recaptured Images

Abstract: As there is a huge growth of technology today we can�t say properly that the image shown by someone is the original copy and other is duplicate just by seeing with our naked eyes .To detect such anomalies the technology to use should be also big in detection perspective. DCT coefficients features are proposed and central moments are analyzed to verify for detection. Furthermore, mode based first digit features of DCT coefficients in both luminance component and chrominance component are presented to distinguish the recaptured images from the real-scene images. Finally, these two kinds of features are combined to improve the detection performance.

Keywords: Recaptured image forensics, Color moments, Mode based first digit features.