Fig. 12From: Boosting CNN-based primary quantization matrix estimation of double JPEG images via a classification-like architectureExamples of tampered (double JPEG) images and map of the estimated k-th Q1 coefficient, for some values of k. For each example, we report, from left to right: the tampered image, the ground-truth tampering map, the estimated map for the DCT coefficient no 1, 6, and 14, that is QM(:,:,1),QM(:,:,6) and QM(:,:,14)Back to article page