Samples

ORI "Forensic Images Samples" for the quick examination of scientific images.
SAMPLES - Some Important Principles to Remember:

• Forensically, you can only "de-authenticate" an image (i.e., show that it has discrepancies).
• Authentication of a scientific image requires access to the original data.
• The identification of a discrepancy is only the allegation, and it does not by itself demonstrate an intentional falsification of data.
• The interpretation as to whether any image manipulation is serious requires familiarity with the experiment(s) and imaging instruments.
• Each Forensic Droplet or Forensic Action represents only a ''first order' examination. They are not full-proof, but use of another may reveal something not shown by the first.
• The quality of the results depends on the resolution of the image, and the degree to which it has (not) been compressed, a process that can add artifactual "blocks" to otherwise continuous features. (See Test Pattern)

Falsified Images from Closed ORI Cases

To save images to your computer:

1. Click thumbnail to load larger image.

2. Right click on larger image.

3. Select Save Picture As... option.

Forensic-Test Patterns

Test images with defined features are of use when trying a new processing routine, to explore whether the absence or presence of a feature (i.e., a false negative or a false positive) is not a possible artifact introduced by the routine, by the printer, or by photocopying.

The following are some trial versions.