WO2008138224A1

WO2008138224A1 - Method of embedding computer data at the outside of character script

Info

Publication number: WO2008138224A1
Application number: PCT/CN2008/000932
Authority: WO
Inventors: Aqi Zheng
Original assignee: Aqi Zheng
Priority date: 2007-05-16
Filing date: 2008-05-13
Publication date: 2008-11-20
Also published as: CN101308541A

Abstract

A method of embedding computer data at the outside of character script is disclosed. The method includes: first, obtaining '0''1' computer stream that will be embedded out of the character script; then, grouping the '0''1' computer data stream, and expressing them with the different point, line, figure, color or any combination of them; adding figure segmentation tags among the groups, then gaining printable figure stream; distributing every element of printable figure stream to the outside of the character script waiting to be printed or pressed, and forming complex document, printing the complex document to the carrier medium via printer or imprinter, and becoming printed work with embedded information. When identifying, using image capturing device that can obtain all or local image on the surface of carrier medium, such as scanner, camera etc, to obtain image on the surface of printed work with embedded information, and after identifying, recovering to the originally embedded computer data.

Description

Technical field

The present invention relates to computer image processing and recognition techniques. It belongs to the field of information hiding and information security. Background technique

With the development of China's economic technology, the amount of computer document processing has increased dramatically, and the amount of electronic documents and documents processed on a carrier medium such as paper has also increased significantly. In some fields, electronic documents and documents on papers such as paper use two. The shortcomings of media storage are becoming more and more obvious. For example, the electronic documents of personnel files and the management of documents on paper, it is necessary to manage electronic documents, manage documents on paper, and find each other, which is more troublesome. So there are two manifestations when the carrier media last week: The documentation becomes very important.

At present, there are cases where the printer prints and embeds information at the same time. For example, Fuji Xerox Corporation of Japan records the date and time of printing of the user's document and the serial number information of the printer by embedding a yellow dot matrix code on the paper while printing the document. However, this method is limited to color printers, and the amount of information buried is small. The two-dimensional bar code technology currently used in the market is based on one-dimensional bar code, so it is also a method of using black blocks to represent "1" and white blocks to represent "0". The space on the carrier medium occupies a certain spatial position, which is visible to the human eye. Easy to copy, poor safety, poor resistance to breakage, not suitable for large SUMMARY OF THE INVENTION The present invention provides a method for embedding computer data outside a text handwriting, which is characterized by: First, acquiring a computer "0""1" data stream that needs to be hidden outside the text handwriting; and then "0""1" to the computer Data stream grouping; "0""1" for different positions of each group of "0""1" data streams is represented by different points, lines, graphics, colors, or any combination thereof; Less than one set of graphics streams adds delimited graphics indicia, such that all group graphics streams and delimited graphics tokens synthesize a printable graphics stream; distribute each element of the printable graphics stream to text handwriting to be printed or printed A composite document is formed outside, and the composite document is printed on a carrier medium by a printer or a printer to become a printed matter with information. At the time of identification, the surface of the printed matter in which the information is buried is obtained by an image pickup device capable of obtaining all or part of the image on the surface of the medium by a scanner, a camera, or the like, and is identified and restored to all or part of the computer information data buried therein. i

: The element refers to a point, a line, a figure, a color, or any combination thereof and a separation of the graphic mark 4. The point includes a dot, an elliptical point, a square point, a rectangular point, a diamond point, a polygon point, and the like. The line includes a straight line, an arc, and an arbitrary curve; the graphic includes a geometric shape such as a circle, a square, a diamond, a polygon, and the like. Ink, ink, and toner for printing or printing In addition to general-purpose inks, inks, and toners, it also includes special inks such as infrared, ultraviolet, and fluorescent inks, inks, toners, photo-induced inks, toners, inks, and temperature-changing inks. Toner, ink, thermal ink, toner, ink, magnetic ink, toner, ink, etc. The image pickup apparatus includes an infrared image pickup device, an ultraviolet image pickup device, a camera capable of obtaining an image, a video camera, and the like.

The beneficial effects of the invention are: According to the embodiment, a large amount of surface can be preserved on the surface of the carrier medium Computer information data, while having little or no visual impact on the text on the carrier medium. In addition, since the elements of the printable graphics stream are distributed outside the handwriting to be printed or printed, the positional relationship between the elements can be changed. These elements can effectively utilize all the blank spaces outside the handwriting, so A large amount of computer data can be buried outside the written handwriting.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process of embedding a data stream of "0" "1"; FIG. 2 is a process of recognizing a print data embedded with information; FIG. 3 is a graph showing several computer data streams ' "0" "1";

Figure 4 is a schematic diagram of the computer "0" "1" data stream converted into a printable graphics stream; Figure 5 is a schematic diagram of a method for burying a printable graphics stream outside the text handwriting;

- Figure 6 shows a schematic diagram of the method of burying a graphic stream outside the text handwriting.

detailed description

First, get the computer "0""1" data stream that needs to be hidden outside the text handwriting, as shown in Figure 4G011010101101..., and then group the computer "0""1" data stream, as shown in Figure 4G three-digit group, 011 010 101 101..., of course, can also be two, four, five... a group; "0""1" for different positions of each group of "0""1" data streams with different points, lines, graphics, The color or any combination thereof indicates that the group graphics stream is obtained. For example, if the first bit in the group graphics stream is "0", it is represented by the 101 graph of FIG. 3, and if it is "1", it is represented by the 102 graph of FIG. 3; If the two digits are "0", they are represented by the 103 graph of Fig. 3. If it is "1", it is represented by the 104 graph of Fig. 3; if the third digit is "0", it is represented by the graph 105 of Fig. 3, if it is "1" The graph of 106 in Fig. 3 represents ..., thus the group graph stream of A, B, C, D... of Fig. 4G is obtained from 011 010 101 101... of Fig. 4G. The separation pattern mark is added every not less than one group of graphics stream, and each of the two groups is added with a division pattern mark as shown in FIG. 40, 5, F, . Such a group of graphics streams and delimited graphics markers synthesize a printable graphics stream, H of Figure 4G:

— — — ; The composite document is formed by distributing each element of the printable graphics stream to the text handwriting to be printed or printed. FIG. 5 and FIG. 6 are printed by the printer or printed on the carrier medium. Printed information. Since each element of the printable graphic stream distributed outside the handwriting is small in size, it has a small visual impact on humans. If these elements are printed or printed with colorless transparent ink, it does not affect human vision at all. In addition, since the elements of the printable graphics stream are distributed outside the handwriting to be printed or printed, the positional relationship between the elements can be changed, and all the blank spaces outside the handwriting can be effectively utilized. a large amount of computer data, the surface of the printed matter in which the information is buried is obtained by an image capturing device capable of obtaining all or part of the image on the surface of the medium by a scanner, a camera, etc., and the image portion is filtered, and the separated graphic mark is recognized. The elements between the separated graphic marks are identified and restored to the original buried partial or partial computer information data.

Claims

Claim

1. The present invention provides a method for burying computer data outside a text handwriting, which is characterized by: First, acquiring a computer "0" "1" data stream that needs to be hidden outside the text handwriting; and then on the computer "0" "1" Data stream grouping; "0" "1" for different positions of each group of "0" "1" data streams is represented by different points, lines, graphics, colors, or any combination thereof; Less than one set of graphics streams adds delimited graphics indicia, such that all group graphics streams and delimited graphics tokens synthesize a printable graphics stream; distribute each element of the printable graphics stream to text handwriting to be printed or printed A composite document is formed outside, and the composite document is printed on a carrier medium by a printer or a printer to become a printed matter with information. The surface of the printed matter in which the information is buried is recognized by an image pickup device capable of obtaining all or part of the image on the surface of the medium by a scanner, a camera, or the like, and is image-recovered and restored to the original buried partial or partial computer information data.

2. A method of embedding computer data outside a written handwriting according to claim 1, wherein: said element is a point, a line, a figure, a color or any combination thereof and a separate graphic mark.

3. The method of embedding computer data outside a written handwriting according to claim 1, wherein: the point comprises a dot, an elliptical point, a square point, a rectangular point, a diamond point, a polygonal point, and the like.

4. A method of embedding computer data outside a written handwriting according to claim 1, wherein: said line comprises a straight line, an arc, and an arbitrary curve.

5. The method of embedding computer data outside a written handwriting according to claim 1, wherein: the graphic comprises geometric shapes such as a circle, a square, a diamond, a polygon, and the like.

6. The method of embedding computer data outside a written handwriting according to claim 1, wherein: ink, ink, and toner for printing or printing include infrared, ultraviolet, and ink in addition to general ink, ink, and toner. Special inks such as fluorescent ink, ink, toner, photo-induced ink, toner, ink, temperature-changing ink, toner, ink, thermal ink, toner, ink, magnetic ink, toner, ink, etc.

7. The method of burying computer data outside a written handwriting according to claim 1, wherein said image capturing device comprises an infrared image capturing device, an ultraviolet image capturing device, a camera capable of obtaining an image, and Camera, etc.