Challenges in Generating Bookmarks from TOC Entries in e-Books

摘要

The automatic bookmark creation in e-books using the TOC entries are discussed at length in this paper. The approach here is novel and has significant advantages, that the extracted TOC entries could be used for extracting different parts of the book with the use of bookmarks. Bookmarks will give the exact location of the content, which could be used in the extraction of a particular Chapter / Section / Sub-section of an e-book. Apart from this, these could be guide to extract the structure information and extraction of hierarchy in e-books (e.g., Chapter→Section→Sub-section). Various challenges involved are discussed at detail. Solutions to the challenges identified were demonstrated using a PDF-specific tool named Booky. The solution however could be generalized for any digital format. Some relatively minor issues still are still open. However, we have been able to achieve about 98% success rate in the accurate extraction and linking of bookmarks automatically.