Quick positioning method for forming two-dimensional code positioning point dot matrix, and quick positioning method for capturing two-dimensional code positioning point dot matrix

A method for capturing a positioning point dot matrix of a two-dimensional code quickly positioned, comprising the following steps:

• step 1:
• acquiring a two-dimensional code picture, processing the picture to obtain dot matrix data;
• step 2:
• capturing a sub dot matrix A of a*b (a>=3, b>=3) at the end according to a dot matrix sequence;
• step 3:
• judging whether positioning point spacer regions are around the sub dot matrix A, and judging whether the sub dot matrix A is consistent with the standard positioning point data in the database, if not, returning to step 2;
• step 4:
• by taking the sub dot matrix A as a reference, moving a distance of a unit length of L1, and capturing a sub dot matrix B of a*b (a>=3, b>=3);
• by taking the sub dot matrixes A and B as a reference, moving a distance of a unit length of L2, and capturing two sub dot matrixes C and D of a*b respectively;
• step 5:
• judging whether the sub dot matrixes B, C and D are consistent with the standard positioning point data, if not, returning to step 2.

A method for a two-dimensional code quickly positioned, wherein:

• comprising:
• coding region,
• the coding region comprises four centrosymmetric major fixing sites at four vertices of the coding region, and the main positioning point and the interval area outside the coding area;
• The coding area also includes a plurality of auxiliary positioning points located on the side line of the coding area.