6. The computer-implemented method of claim 1 , wherein the autocorrelating comprises summing a product of individual bit positions.
1. A computer-implemented method of paginating an electronic book, the method comprising: under control of one or more processors configured with executable instructions, capturing images of pages of a print version of the electronic book; performing optical character recognition on the images; based at least in part on the optical character recognition, identifying page text strings and associated page labels corresponding to individual pages; for an individual page text string, autocorrelating with at least a portion of the electronic book to determine a plurality of candidate matching positions within the electronic book; at each respective candidate matching position within the electronic book, comparing the individual page text string to a respective text string of the electronic book corresponding to the respective candidate matching position determined from the autocorrelating; selecting a page position from the plurality of candidate matching positions based at least in part on the comparing; and mapping between the selected page position and the page label associated with the individual page text string.