Coding pattern comprising direction codes

G - Physics – 06 – K

Patent

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G06K 1/00 (2006.01) G06K 7/00 (2006.01)

Patent

CA 2697390

A substrate having a coding pattern disposed on a surface thereof. The coding pattern comprises a plurality of target elements defining a target grid. The target grid comprises a plurality of cells, wherein neighboring cells share target elements. A plurality of data elements are contained in each cell. Tags are defined by a plurality of contiguous cells and each tag comprises respective local tag data encoded by a respective set of the data elements. Each cell comprises one or more translation symbols encoded by a respective set of the data elements. The translation symbols identify a translation of the cell relative to a tag containing the cell.

L'invention concerne un substrat présentant un motif de codage situé sur l'une de ses surfaces. Ce motif de codage comprend plusieurs éléments cibles définissant une grille cible. La grille cible comprend plusieurs cellules, des cellules voisines partageant des éléments cibles. Chaque cellule contient plusieurs éléments de données. Des étiquettes sont définies par plusieurs cellules contiguës, et chaque étiquette comprend des données d'étiquette locales correspondantes codées par un ensemble correspondant d'éléments de données. Chaque cellule comprend un ou plusieurs symboles de translation codés par un ensemble correspondant d'éléments de données. Les symboles de translation identifient une translation cellulaire par rapport à une étiquette contenant ladite cellule.

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