Artwork generated to convey digital messages, and methods/apparatuses for generating such artwork
2D machine readable symbologies are stylized and made aesthetically-appealing, facilitating their use to convey plural-symbol data on product packaging and other articles. In some arrangements, symbologies are stylized by geometric transformations (e.g., by multiple rotation and/or mirroring operations) to develop tiles having organized geometric structures. Such stylized symbologies can be decoded by existing code readers. A great variety of other features and arrangements are also detailed.
1. A method of producing an output 2D machine-readable indicia from an input 2D machine-readable indicia, comprising the acts:
identifying a first excerpt of the input 2D machine-readable indicia;
processing the excerpt to yield a tile having an organized structure, by applying to said excerpt a conformal mapping function, yielding a first interim result; applying to said first interim results one or more transformation operations, including at least one transformation operation from the list: (a) mirroring, (b) rotating, (c) translation, (d) toroidal shifting, (e) signal-inverting, (f) scaling and (g) glide-reflection transformation, to yield a second interim result; and applying an inverse conformal mapping function to the second interim result to yield said tile; and
incorporating said tile in the output 2D machine-readable indicia.
2. A tangible article bearing a 2D machine-readable indicia, said indicia comprising a first excerpt of a machine-readable code that is presented two or more times in transformed form relative to each other, said transformed form comprising (a) mirrored, (b) rotated, (c) translated, (d) toroidally-shifted, (e) inverted, (f) scaled and/or (g) glide-reflection-transformed form, wherein said indicia conveys a plural-symbol payload that enables a compliant camera-equipped decoder system to access information relating to said article.
3. The article of claim 2 comprising packaging for a retail item, wherein said payload conveys a Global Trade Item Number (GTIN) for said item.
4. The article of claim 2 comprising packaging for a retail item, wherein said payload enables the complaint camera-equipped decoder system to access price information for said item.
5. The article of claim 2 comprising packaging for a food item, wherein the payload enables the compliant camera-equipped decoder system to obtain nutritional information about the food item.
6. The article of claim 2 in which said first excerpt is the entire machine-readable code.
7. The article of claim 2 in which said first excerpt of the machine-readable code is presented three or more times, in three or more different forms, in said indicia.
8. The article of claim 2 in which said three or more times includes two or more of said forms (a)-(g).
9. The article of claim 2 in which said first excerpt is square and has a side dimension shorter than a shortest side dimension of the machine-readable code.
10. The article of claim 2 in which said two or more forms of the first excerpt are presented in normalized-sum form in said 2D machine-readable indicia.
11. The article of claim 2 in which the first excerpt is square with a first side dimension, and the machine-readable indicia is also square, also with said first side dimension.
12. The article of claim 2 in which the 2D machine-readable indicia has two or more axes of symmetry.
13. The article of claim 2 in which the 2D machine-readable indicia has four or more axes of symmetry.
14. The article of claim 2 in which the 2D machine-readable indicia is bitonal.
15. The article of claim 2 in which said two or more presentations of the first excerpt occupy a shared space on the article, said shared space having an area equal to an area of the first excerpt.
16. The article of claim 2 in which said two or more presentations of the first excerpt occupy different, non-overlapping space on the article.
17. The article of claim 2 in which a portion of the machine-readable code is not presented in said indicia.
18. The article of claim 2 wherein said indicia conveys a plural-symbol payload that enables a compliant camera-equipped decoder system to access information relating to said article from a database.
19. The article of claim 2 in which the 2D machine-readable indicia further includes a second excerpt of the machine-readable code, different than said first excerpt, wherein said second excerpt is presented two or more times in (a) mirrored, (b) rotated, (c) translated, (d) toroidally-shifted, (e) inverted, (f) scaled and/or (g) glide-reflection-transformed form relative to each other.
20. A non-transitory computer readable medium containing instructions for configuring a processing system to produce an output 2D machine-readable indicia from an input 2D machine-readable indicia by acts including:
identifying a first excerpt of the input 2D machine-readable indicia;
processing the first excerpt to yield a tile having an organized structure, by applying to said first excerpt one or more transformation operations, including at least one transformation operation from the list: (a) mirroring, (b) rotating, (c) translation, (d) toroidal shifting, (e) signal-inverting, (f) scaling and (g) glide-reflection transformation;
incorporating said tile in the output 2D machine-readable indicia; and
rendering said output 2D machine-readable indicia on a tangible article to be visible to human observers, wherein the output indicia has a non-steganographic form on said article.