A recent picture featured on Victoria Secret’s website was pointed out by PhotoshopDisasters for it’s reckless retouching, leaving a model holding only the handbag straps. However, Neal Krawetz believed the digital manipulator didn’t stop there and performed some in-depth analysis using principal component analysis, luminace diagrams, and details of JPEG compression to find that the entire image had been retouched and edited.
The large squares at the bottom of her dress and in the background are from a JPEG resave. (They also exist on her face, but that was washed out when I applied the histogram.) So those areas were modified and then saved as a JPEG. However, the rest of her dress contains no rectangular artifacts — those were touched up.
And speaking of touched up… notice the round dark artifact on her chest. JPEG artifacts are rectangular, not round. That is where the artist removed her nipple. (My gal friends tell me that she should have worn a padded bra.)
The min/max values of the image identify one other manipulation. Normally these dots should should look like random noise. There should be no visible patterns in real images. In this case, her face, hair, arms, and dress all have different noise patterns. This matches the other findings that indicate that her dress, face, and limbs were all digitally modified.
