Assume I have a document which I supspect to have yellow tracking dots. How can I remove them while keeping the actual information on the document? Is making a b&w copy enough? Is the copy machine adding its own tracking?
Would JPEG compression of the scanned document be sufficient to remove the dots? But would the scanner sensor leave its finger print in the scan?
OCR might be an option but only for text. Bonus: How about removing image watermarks while keeping the foto motive?