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“JBIG2 compression would do NOTHING to the boxes on the document. JBIG2 is a font based compressor.”

NBC claims that it is Mixed Rastor Compression that is involved primarily with the “image segmentation” algorithms and not JBIG2 for the WH LFBC pdf.

I am trying to get up to speed, but the “image segmentation” is being claimed to have captured the first image of a box or “e” (a segment) and then if another similar-enough image (segment) is encountered it is ignored and replaced by a duplicate of the first one. This is NOT OCR but based on an algorithm that tries to ID boundaries of any contiguous shape (segment). It could be a number, letter or blob to the human eye but will be treated the same by Mixed Rastor Compression.

If this is true, then the AP/Applewhite copy (claimed to have been a JPEG made from a photo of a hard copy LFBC, NOT a copier scan), was NOT compressed with “image segmentation” according to NBC. Therefor it is claimed by NBC to NOT have any duplicate images when magnified at the bit-map level. The Applewhite image also doesn’t have the clipping mask, with was added by Preview, according to NBC.

NBCs argument is easily shown to not be valid, because if that was the case, then the perfect place for this to have occurred is in the security background layer. That IS a contiguous, repeating pattern. Are we to believe that a computer process found two hand draw, ink on paper, and photocopied boxes similar enough to replace one with a copy of the other, but it did not find a pattern in the security pattern background?

If what NBC says is true, then the compression occurred AFTER the image layers were separated, because if you look at the image as a whole the boxes are very different when you considered the content inside the boxes. This means that even analyzing the background layer by itself, this compression algorithm was incapable of finding a repeatable pattern.

What NBC is saying is not taking into consideration that this must be a systematic process,and not a logical one. If you say 'this was done here', it must hold true for the entire document, you can't cherrypick.