Digital image forensics is called blind if the forensic investigator is confined to examine the final output of the generation process. In particular, knowledge neither of the original scene nor any intermediate result of the generation process is available at the time of analysis. This includes the forensic investigator’s uncertainty about whether the image under analysis has been subject to any kind of post-processing. A blind analysis however not necessarily implies that the forensic investigator does not have any knowledge of or assumptions about potential components of the image generation process. This applies in particular to active image forensics, because the image generation process has been purposely modified by the investigator at an earlier stage.

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