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When the Google book search was launched few years back, every one of us appreciated Google’s efforts. Most of us still wonder how the books are digitized and presented in search results. No one ever imagined that Google is so serious about scanning, capturing and indexing knowledge stored in books and now they have a patent on their book scanning technology.

The secret of Google’s book scanning has been revealed now as the patent they were waiting for has been granted last week. The patent explains how Google’s proprietary book scanning technology works.

Google created an infrared camera technology that detects the three-dimensional shape and angle of book pages when the book is placed in the scanner. So, this allows pair of infrared cameras map the three-dimensional shape of the pages by detecting distortion to the pattern. In turn, this allows the distortion of the text to be determined, and the degree of correction needed to read it accurately.

Now this answers the question “How Google will index billions of pages from books?”

Source: buzznewsroom