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Image demosaicing, which will be presented in detail in section 1.2.2, leaves artifacts that can be used to find falsifications. The Bayer CFA (see Figure 1.3) is by far the most commonly used. Mosaic detection algorithms thus focus on this matrix, although they could be adapted to other patterns.

Figure 1.8. Percentage of points below the global noise curve and geometric mean for each macro-block at S0, S1 and S2