METHOD AND APPARATUS FOR IDENTIFYING WHITE SPACE TABLES WITHIN A DOCUMENT

One embodiment of the present invention provides a system that facilitates detecting white space tables within a document, wherein a white space table is comprised of text arranged in rows and columns, wherein at least some of the rows and columns are separated by bands of white space rather than by lines. The system operates by identifying an area that includes consecutive lines of text objects with an amount of white space between text objects greater than a specified value. Note that a text object is a string of text without an amount of white space greater than the specified value. The system then determines if the text objects on consecutive lines have widths that are within a specified tolerance of each other. If so, the system checks the spaces between the consecutive lines of text objects to determine if they belong to a single white space table or multiple white space tables. The system also checks if the consecutive lines of text objects form a true table by determining if the consecutive the lines of text can be organized in a number of rows and columns. Finally, the system creates a new white space table for the area.