Safe and steady paper document transmitting and reading method and system
The invention discloses a safe and steady paper document storage, transmission and reading method and system, which are different from the existing paper document safe transmission method based on a two-dimensional code or other encryption modes, and have the characteristics of high fault tolerance...
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| creator | XIANG WENBO YOU YUE MAO YAOBIN YE YUMENG |
| description | The invention discloses a safe and steady paper document storage, transmission and reading method and system, which are different from the existing paper document safe transmission method based on a two-dimensional code or other encryption modes, and have the characteristics of high fault tolerance and large coded data volume. The method comprises a coding part and a decoding part: a coding end firstly carries out embedded coding on a document image so as to obtain multi-channel coding with progressively decreased importance, and then entropy coding, encryption coding and error correction coding are respectively and sequentially carried out on data of each channel so as to obtain a bit stream; and finally, paving the coding bit stream into a two-dimensional matrix, adding a positioning identifier, and printing on paper. A decoding end generally shoots a paper coded image through embedded equipment such as a mobile phone, identifies a 0/1 symbol in the image through an image processing algorithm, decodes the 0 |
| format | Patent |
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| subjects | CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION |
| title | Safe and steady paper document transmitting and reading method and system |
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