Forensic Authenticity Analyses of Video or Photo Evidence / Photogrammetry / Grayscale Opacity Pixel Sampling / Evaluation of Metadata / Extract fingerprints from background / Color exposure or color shift corrections / Refraction / Lens flare / "process" "processing" "digital signal processing" "surveillance" "camera" "entrapment" "authenticity" "photo" "video" "still" "tamper" "tampering" "authentic" "authenticity" "edit" "falsify" "falsification" "trustworthy" "enhance" "enhancement" "clarify" "edge" "scale" "measure" "height" "photogrammetry" "Grayscale" "Grayscale Opacity" "Grayscale Opacity Pixel" "Grayscale Opacity Pixel Sampling" "Opacity" "Pixel" "Sampling"