Abstract：Recognizing Call Numbers for Library BooksThe Problem and Issues This paper addresses a challenging and practical problem in image processing and pattern recognition where we need to recognize book call numbersor book IDs using the Library of Congress formatin images of book spinesFor this special case of Optical Library AutomationThis mainly involves how to automatically recognize the librarys book numbers or book IDs from the images of the book spinesThis article primarily explores a challenging and practical issue in image processing and pattern recognitionidentifying library book numbers or book IDsusing the Library of Congress formatin images of book spinesFor this specific optical character recognitionOCRcasewe reviewed and evaluated several standard and specialized OCR systemsDue to the very small and possibly worn labels in librariesand the very fine symbols printed on themexisting OCR systems are not effective for recognizing book numbers on spines