| Summary: | 碩士 === 東海大學 === 資訊工程與科學系 === 96 === Nowadays ever-increasing amount of data are transmitted through the Internet, and they are in danger of tampering. So, protection of the integrity of the data becomes very important. Until present, few methods have been published that successfully address important issues on file verification, and detection of document tampering. In the thesis, we propose a new method to protect and recover binary document images from tampering. Black skeletons are calculated first and then information is embedded accordingly in the host file. The embedded information can be extracted from the stego file anytime later to compare with the original black skeletons for file verification. Afterward, we can recover the tampered area by using our proposed method. The experimental results show that our proposed method is effective in detecting locations of tampering and is capable of recovering binary document images.
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