We receive 100+ document via postal mail. Each paper document can have different number of pages. We put a blank paper as a separator sheet between these document and then we scan these documents to produce single large PDF document.
Once we receive this large PDF, We have automated process that needs to shred the large PDF by finding separator blank page and then create individual pdf.
In large PDF even though separator page looks like a blank page, technically its not a blank page. Since this is a scanned blank paper, the pdf page has single blank image. (Also depends on scanner quality the blank page may have some small black dots that we usually see on scanned document.)
In-fact all the pdf pages have a single large image, since they are scanned pages.
I can loop through all the pages and creates new pdf whenever i find separator page. The challenge here is to find separator page. In above scenario what would be a best option to find blank page?
On side note, We also tried using bar code page as separator sheet. However sometime the scanned quality of the barcode is so bad that aspose.barcode could not identify it as barcode. So we are now trying blank page as separator sheet.