I have yet to understand how opimization renders LAYERS.
I use Adobe Illustrator and Adobe Photoshop and remain baffled as to how this so called document was optimized!
I over “sharpened” the short form “certificate” using unsharp mask ...and of course got white halos around all of the black features...text, signatures etc.
Why one woul seperates those halos out from the “documents” image...and place them on a seperate layer seems really truly bizarre,,and utterly useless....unless they were not halos at all but a layer MADE to cover up the slop leftover from trying to remove the type on an original!
Search for pages about Xerox Workcenter, MRC or mixed raster compression, and the birth certificate. It can be tough technical going, but there are explanations for how it happens.
Why one woul seperates those halos out from the “documents” image...and place them on a seperate layer seems really truly bizarre,,and utterly useless....
One of the big reasons I never bought the forgery argument. No human forger would assemble the LFBC this way--it only makes sense if it's some kind of algorithm artifact.
Open these PDFs in Illustrator and compare their layers to Obama’s LFBC PDF.
http://www.ssunaa.com/wp-content/uploads/2013/07/Scanned-from-a-Xerox-multifunction-device001.pdf
http://www.newport.gov.uk/stellent/groups/public/documents/planningdocument/cont513447.pdf
http://www.rrc.state.tx.us/rules/comments-3-13-TalismanEnergy.PDF
Now open Obama’s 2010 taxes return in Illustrator and compare the layers to the previous files and Obama’s LFBC PDF:
http://www.whitehouse.gov/sites/default/files/rss_viewer/POTUS_taxes.pdf
What these PDFs all have in common is that they were created on a Xerox copier/scanner.
If you take any of these files and open them on a Mac using Preview and chose “Save as PDF” they layers will now match the LFBC PDF for rotation.
I have yet to understand how opimization renders LAYERS.I work for a copier company. Been working on the things the past 15 years. All copiers, when they scan a document to PDF, produce 6 or more layers in the PDF output, starting with a monochrome layer with most of the text on it and further layers with additional scanned data on top of it. Further, more artifacts occur if you are using scan-to-email instead of scan-to-folder.