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Digital image forensics seeks to detect statistical traces left by image acquisition or post-processing in order to establish an images source and authenticity. Digital cameras acquire an image with one sensor overlayed with a color filter array (CFA), capturing at each spatial location one sample from the three necessary color channels. The missing pixels must be interpolated in a process known as...
In this paper, a novel spatial error concealment algorithm, which adaptively switches between directional interpolation and region matching, is proposed. Different from the previous spatial error concealment methods, which just utilize smooth property, the algorithm exploits both smooth property and texture information to recover the lost blocks. Based on the DCT coefficients in the available neighboring...
In this paper, a novel temporal error concealment algorithm, called spatio-temporal boundary matching algorithm (STBMA), is proposed to recover the information lost in the video transmission. Different from the classical boundary matching algorithm (BMA), which just considers the spatial smoothness property, the proposed algorithm introduces a new distortion function to exploit both the spatial and...
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