Writing-Life Log: a challenge of camera-pen interface based on image retrieval

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Information is exchanged between a human user and the external world by reading and writing. In this research, we focus on writing and challenge to implement "writing-life log", which is to record all information generated by the action writing. This is not just a record of information represented by writing; the written information must be related to which document and which part the writing has been done. This allows a better estimation of the user's preference, as well as a learning aid. In order to realize the above functionality, we have proposed and tested a method of recovering a handwriting by using a camera mounted on the pen, as well as a method of placing the recovered handwriting. As a result, it has been shown that the proposed method is capable of recovering and placing the handwriting accurately.