Patent ID: 11868844
Assignee: UNIVERSIDAD DE MURCIA
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. Method for encoding a two-dimensional image, comprising:
predefining a collection of two-dimensional waves as potential components of the two-dimensional image, each of the two-dimensional waves being determined by at least two parameters, namely, a first spatial frequency u in a first direction and a second spatial frequency v in a second direction different from the first direction;
predetermining a natural number c of said two-dimensional waves to compose the two-dimensional image;
selecting a number c of two-dimensional waves out of all the two-dimensional waves in the collection;
composing the two-dimensional image by applying a predetermined mathematical operation on the selected c two-dimensional waves;
forming a visual code by framing the two-dimensional image with a band of a predetermined colour whose contour is a predetermined closed flat curve;
reproducing the visual code on a label.