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"enhance" hidden pixel edit compression rate Error Level Analysis exemplar photo shop forensic

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First published at 01:28 UTC on September 24th, 2018.

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Image Forensic Expert Is My Digital Image Edited?

different approaches for hiding pixels are used by different image generating & or editing programs & can be detected & associated to them

2:32 = ELA Error Level Analysis permits id…

Image Forensic Expert Is My Digital Image Edited?

different approaches for hiding pixels are used by different image generating & or editing programs & can be detected & associated to them

2:32 = ELA Error Level Analysis permits identifying areas within an image that are at different compression levels, by detecting the distribution of error introduced after re-saving the image at a specific compression rate,

BUTT!
the presence of a uniform level of compression artifacts does not rule out editing of the data since editing could have been performed on less or lossless data followed by uniformly applied lossy compression

3:20 = exemplar is a typical example or excellent model of what is normally produced by the
device under the same conditions & then compaired to the data in question

https://en.wikipedia.org/wiki/Error_level_analysis
https://www.researchgate.net/figure/Exemplar-test-image-2-and-segmentation-results_fig2_242268750
https://www.slideshare.net/SebastianoBattiato/social-multiimedia-forensics
https://fotoforensics.com/ = blocked as of today
https://fotoforensics.com/tutorial-ela.php
https://fotoforensics.com/tutorial-hidden-pixels.php
http://www.myriad-online.com/images/forum/IMG_4692.jpg
https://goo.gl/maps/9zEw4X7Vw9H2
https://goo.gl/maps/oTXo6wFussK2
https://youtu.be/z0l2VDPuDZk
https://imgur.com/a/Jjrm68m
https://youtu.be/28JOn-RVGUw
https://www.youtube.com/user/PrimeauForensics/videos