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Trilateral poly-dimensional bar code easy for omnibearing recognition and reading method thereof

A triangular, all-round technology, applied in the field of image recognition, can solve the problem of limited angle of recognition, can not support all-round recognition, two-dimensional code can not support all-round and other problems, achieve easy correction, high practical application value, recognition fast effect

Inactive Publication Date: 2007-02-07
BMC MEDICAL
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  • Description
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Problems solved by technology

However, due to the inherent characteristics of the rectangle, these two-dimensional codes either cannot support omnidirectional, or need multiple corrections to be able to recognize
[0007] Another kind of two-dimensional code is a stacked code, such as the 417 barcode, which is realized by truncating the one-dimensional barcode symbols on the row height. This two-dimensional code has a large limit on the recognition angle and cannot support All-round (360°) recognition

Method used

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  • Trilateral poly-dimensional bar code easy for omnibearing recognition and reading method thereof
  • Trilateral poly-dimensional bar code easy for omnibearing recognition and reading method thereof
  • Trilateral poly-dimensional bar code easy for omnibearing recognition and reading method thereof

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Embodiment Construction

[0036] The present invention will be described in detail below by taking a two-dimensional triangular barcode as an example.

[0037] Figure 2A ~ Figure 2H are several examples of the two-dimensional triangular barcode of the present invention. The two-dimensional triangular barcode shown in the figure is an isosceles right triangle, and the three positioning figures are the same, located on the three corners of the triangle, and some of the positioning points are the center points of the circular or rectangular positioning figures. There are also a certain vertex of the rectangle positioning graphics.

[0038] The characteristics of positioning graphics include two elements: pattern and color. As shown in the figure, the pattern of the positioning figure can be a circle or a square, or a concentric circle conforming to a certain proportion or a plurality of squares with the same central point, etc., and its color can be one or more specific colors or monochrome. When colo...

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Abstract

The trilateral multiple-dimension strap code convenient to omnibearing recognition comprises: three positioning images every with one positioning point on three angles respectively, and information area with multiple modules with chroma value corresponding to data value. When recognizing, scanning and searching globally to match three images and obtain positioning point coordinate; solving 6 affine transformation coefficients and the information area module size; obtaining the corresponding position of different module in image; finally, acquiring pixel chroma value for module data. This invention is simple and efficient.

Description

technical field [0001] The present invention relates to image recognition technology, in particular to a barcode and its reading method Background technique [0002] Two-dimensional code is a new coding scheme based on traditional barcode. After error-correcting coding of characters, text, images and other information, the encoded binary code stream is expressed as a two-dimensional barcode symbol. Compared with the traditional barcode, it has the characteristics of high information capacity, strong error correction ability, and does not rely on database support. It is widely used in document reading, logistics, and electronic data exchange. [0003] Quick Response Matrix Code (QR Code) is a matrix two-dimensional code developed by Denso Corporation of Japan in September 1994. It is specially optimized for Chinese character coding and is very suitable for the processing of Chinese character information. Figure 1A Shown is a QR code, which is a square, including many square-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/00G06K9/18G06V30/224
Inventor 高飞党宁娜王浩
Owner BMC MEDICAL
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