Two-Dimensional Code and Method Thereof

A method to decode a two-dimensional code, the two-dimensional code comprising:

• a plurality of positions, the positions represented by identical geometric shapes arranged adjacently on a plurality of concentric circles, the plurality of concentric circles having a common center and being arranged substantially on a two-dimensional plane, each of said positions indicating presence of a symbol or absence of a symbol, each presence or absence of a symbol at each position being optically readable and representing a data value set to each of the plurality of positions;
• and
• a first reference pattern portion including a set of the plurality of positions indicating at least the common center, wherein the first reference pattern portion comprises all positions along an inner most circle of the plurality of concentric circles, wherein all positions along the inner most circle indicate presence of a symbol;
• and
• wherein the method comprises:
• obtaining an image depicting a scene comprising the two-dimensional code;
• identifying a common center of a plurality of concentric circles;
• identify a rotation of the two-dimensional code;
• identify a presence of a symbol or an absence of a symbol for each of a plurality of positions of the two-dimensional code using the identified respective common center and identified rotation;
• and
• decoding the two-dimensional code by mapping the presence of a symbol or an absence of a symbol for each of the plurality of positions to a data value, the data value set to each of the plurality of positions.

A device comprising:

• processing circuitry;
• and
• a memory, said memory containing instructions executable by said processing circuitry, whereby said device is operative to decode a two-dimensional code comprising a plurality of positions, the positions represented by identical geometric shapes arranged adjacently on a plurality of concentric circles, the plurality of concentric circles having a common center and being arranged substantially on a two-dimensional plane, each of said positions indicating presence of a symbol or absence of a symbol, each presence or absence of a symbol at each position being optically readable and representing a data value set to each of the plurality of positions, the two-dimensional code further comprising a first reference pattern portion including a set of the plurality of positions indicating at least the common center, wherein the first reference pattern portion comprises all positions along an inner most circle of the plurality of concentric circles, wherein all positions along the inner most circle indicate presence of a symbol;
• and
• wherein the processing circuitry performs the decoding of the two-dimensional code based on being configured to:
• obtain an image depicting a scene comprising the two-dimensional code;
• identify a common center of a plurality of concentric circles;
• identify a rotation of the two-dimensional code;
• identify a presence of a symbol or an absence of a symbol for each of a plurality of positions of the two-dimensional code using the identified respective common center and identified rotation;
• and
• decode the two-dimensional code by mapping the presence of a symbol or an absence of a symbol for each of the plurality of positions to a data value, the data value set to each of the plurality of positions.

A method to generate a two-dimensional codes, the two-dimensional code comprising:

• a plurality of positions, the positions represented by identical geometric shapes arranged adjacently on a plurality of concentric circles, the plurality of concentric circles having a common center and being arranged substantially on a two-dimensional plane, each of said positions indicating presence of a symbol or absence of a symbol, each presence or absence of a symbol at each position being optically readable and representing a data value set to each of the plurality of positions;
• and
• a first reference pattern portion including a set of the plurality of positions indicating at least the common center, wherein the first reference pattern portion comprises all positions along an inner most circle of the plurality of concentric circles, wherein all positions along the inner most circle indicate presence of a symbol,
• the method comprising:
• obtaining payload data;
• mapping the payload data to a presence of a symbol or an absence of a symbol for each of the plurality of positions of the one or more two-dimensional codes using the identified common center and identified rotation;
• and
• generating the one or more two-dimensional codes by generating the symbols mapped as presence of a symbol on a surface.