Decode in 2D array and error correction
Decode in 2D array and error correction
 CN 1,499,440 B
 Filed: 09/29/2003
 Issued: 02/13/2013
 Est. Priority Date: 10/31/2002
 Status: Active Grant
First Claim
Patent Images
1. One kind for generation of image to be used for identifying object with respect to the method for the position of this image, may further comprise the steps:
 Create the nonrepetition onedimensional sequence of number;
Described nonrepetition onedimensional sequence is wound into twodimensional array;
AndProduce image according to described twodimensional array,Wherein, each subwindow that has at least the described twodimensional array of n element is unique in described array, and the size of described array is less than or equal to 2 ^{n}1.
Chinese PRB Reexamination
Abstract
A system and process for determining the location of a captured image from a larger image is described. A nonrepeating sequence may be folded into a nonrepeating array in which the array is unique for every sub window of a given size. The image of the sub window may be captured and its location determined within the nonrepeating array.
9 Claims

1. One kind for generation of image to be used for identifying object with respect to the method for the position of this image, may further comprise the steps:

Create the nonrepetition onedimensional sequence of number; Described nonrepetition onedimensional sequence is wound into twodimensional array;
AndProduce image according to described twodimensional array, Wherein, each subwindow that has at least the described twodimensional array of n element is unique in described array, and the size of described array is less than or equal to 2 ^{n}1.


2. the method for claim 1 is characterized in that, described coiling step comprises along the diagonal line of the described twodimensional array described nonrepetition onedimensional sequence of reeling.

3. method as claimed in claim 2 is characterized in that, described coiling step comprises the number expression m with described onedimensional sequence _{1}* m _{2}Each b of the described twodimensional array of size _{K1},
Each of wherein said twodimensional array b _{K1}Be based on k=imod (m _{1}) and l=imod (m _{2}) calculate, i=O wherein ..., L1, L=m _{1}* m _{2}, m wherein _{1}And m _{2}It is the bit number of horizontal and vertical direction in the described twodimensional array.

4. the method for claim 1 is characterized in that, described twodimensional array is binary array.

5. the method for claim 1 is characterized in that, the onedimensional sequence of described number only comprises 0 and 1.

6. the method for claim 1 is characterized in that, the form that described generation step comprises showing is placed described image.

7. method as claimed in claim 6 is characterized in that, the form of described demonstration comprises physical medium.

8. method as claimed in claim 7 is characterized in that, described physical medium comprises the watermark on the paper of printing.

9. method as claimed in claim 6 is characterized in that, the form of described demonstration comprises the image of projection.
Specification(s)