The original documents were first scanned (Figs. A1–H1) and then, alterations were made using image processing software (Figs. A2–G2). In phase-II, image processing software was used to detect alterations in the manipulated documents.
The original documents were first scanned(Figs. A1–H1) and then, alterations were made using imageprocessing software (Figs. A2–G2). In phase-II, image processingsoftware was used to detect alterations in the manipulateddocuments.