mohsen lesani - sharif university of technology
mansour jamzad - sharif university of technology

the need for document authentication emerges when enterprise workflows are made paperless and documents are published and claimed electronically via the internet the current paper aims to propose an authentication and change location detection for binary images that almost all the official documents can be represented as. the previously method of adjusting global length of runs is compared with the new method with the idea of localizing data hiding and extraction the results show that the new method outperforms the previous method in change location detection especially when more than one change is performed in the document image .

authentication, change location detection, image documents, data hiding , binary images