Embedding and detecting hidden information
A novel method is disclosed for detecting hidden information in a document comprising characters, including: determining layout transformation for each character in the document for detection compared with the original document; obtaining a code sequence embedded in the document for detection based on the layout transformation of each character in the document for detection and the predetermined embedding rule; decoding the code sequence to get the hidden information embedded in the document for detection.
Sursen Corp.
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Yongzhi Donglin De Yunming Peng Ningsheng Changwei Yuansong Shutian
Lou Wang Ouyang Zhang Gao Liu Liu Liang Yin