Document management system and method thereof

A document management system, comprising:

• a filter portion that performs digital filtering to image data obtained by scanning a document to be managed;
• an edge extraction portion that performs edge extraction with respect to the image on which the filtering is performed by the filter portion;
• a two dimensional code region detection portion that detects the region of the two dimensional code included in the image data which is processed by the edge extraction portion;
• a two dimensional code decoding portion that decodes the document management information included in the two dimensional code that is detected by the two dimensional code region detection portion;
• a layout analysis portion that analyzes the layout of the document;
• a low resolution portion that obtains data in which a background image, obtained from the document, is made to be low resolution;
• a two dimensional code character and background processing portion that changes the content of the document regarding the output of the two dimensional code region detection portion, the layout analysis portion and the low resolution portion and characters included in the document;
• a two dimensional code character encoding portion that encodes the two dimensional code and the data of the characters included in the output of the two dimensional code character and background processing portion;
• a background encoding portion that encodes data of the background image included in the output of the two dimensional code character and background processing portion;
• a document filing portion that generates a document file on the basis of the output of the two dimensional code character encoding portion and the background encoding portion;
• and
• a file management portion that adds document management information, decoded by the two dimensional code decoding portion, to the document file formed by the document filing portion.

A document management method, comprising:

• detecting a region of a two dimensional code included in image data obtained by scanning a document to be managed;
• decoding document management information included in the detected two dimensional code;
• analyzing a layout of the document;
• making a background image obtained from the document low resolution;
• changing the content of the document regarding at least the two dimensional region of the document, analyzed layout and characters included in the document;
• encoding the data of the background image by encoding the two dimensional code or the data of the characters included in the document in which the changing is performed;
• generating a document file on the basis of the two dimensional code and the characters and the background image in which the encoding is performed;
• and
• adding the decoded document management information to the formed document file.

A document management method, comprising:

• performing digital filtering to image data obtained by scanning a document to be managed;
• performing edge extracting with respect to the image in which the filtering is performed;
• detecting a region of the two dimensional code included in the image data in which the edge extraction is performed;
• decoding document management information included in the detected two dimensional code;
• analyzing a layout of the document;
• making a background image obtained from the document low resolution;
• changing the content of the document regarding at least the two dimensional region of the document, analyzed layout and characters included in the document;
• encoding the data of the background image by encoding the two dimensional code or the data of the characters included in the document in which changing is performed;
• generating a document file on the basis of the two dimensional code and the characters and the background image in which the changing is performed;
• and
• adding the decoded document management information to the formed document file.