Comparing contents of electronic documents

摘要: A method is described which compares contents-rich documents page by and creates a difference document of paired pages. The pages are compared, in that order, based on their marking operators, bitmaps rendered from the still unpaired pages, subset bitmap, e.g. smaller areas. Pages visually identical paired. Blank inserted if cannot be to deal with insertions deletions. Differences between can visible printed document, marked used contain embedded graphical contents as well plain text files.