Virtual Code Window
AssigneeFracture Code Corporation Aps
InventorsStephen Paul Pinchen, Jens Jacob Juul Rasmussen
Life of this patent
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Abstract
A machine readable code comprises a portion of graphical indicium located on a substrate; wherein the code is delimited by a temporary boundary that is generated by a reading machine relative to a fixed trigger point only when the code is being read.
Claims16
A machine readable code comprising a portion of a graphical indicium located on a substrate;
- wherein the code is delimited by a temporary boundary that is generated by a reading machine relative to a fixed trigger point only when the code is being read.
A code according to any preceding claim, wherein the position of the or each temporary boundary relative to the trigger point is embodied in a second machine readable code.
A code according to any preceding claim, wherein the trigger point is a graphic marking.
A code according to any preceding claim, wherein the trigger point is non-symmetrical.
A method of encoding a graphical indicium comprising the steps of:
- acquiring an image of at least a portion of the graphical indicium;
- electronically creating a temporary boundary around a portion of the graphical indicium relative to a fixed trigger point;
- processing the portion of the acquired image that is located within the boundary to produce a descriptor;
- assigning data to the descriptor;
- and,
- storing the association in a storage means.
An apparatus for encoding a graphical indicium comprising:
- a camera for acquiring an image of at least a portion of the graphical indicium;
- a detection unit detecting a fixed trigger point;
- a window calculation unit for electronically creating a temporary boundary around a portion of the graphical indicium relative to the trigger point;
- a processor for processing the portion of the acquired image that is located within the boundary to produce a descriptor;
- an assignment unit for assigning data to the descriptor;
- and,
- a storage means for storing the association.
A method of decoding a graphical indicium comprising the steps of:
- acquiring an image of at least a portion of the graphical indicium;
- electronically creating a temporary boundary around a portion of the graphical indicium relative to a fixed trigger point;
- processing the portion of the acquired image that is located within the boundary to produce a descriptor;
- and,
- retrieving data associated with the descriptor from a storage means.
An apparatus for decoding a graphical indicium comprising:
- a camera for acquiring an image of at least a portion of the graphical indicium;
- a detection unit detecting a fixed trigger point;
- a window calculation unit for electronically creating a temporary boundary around a portion of the graphical indicium relative to the trigger point;
- a processor for processing the portion of the acquired image that is located within the boundary to produce a descriptor;
- a storage means on which data is stored;
- and,
- a retrieval unit for obtaining data relating to the descriptor from the storage means.
Dependencies are inferred from the claim text.