Method and Device for Identifying Objects
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Abstract
In a method and a device for identifying objects, a signature is generated for each object in a first step, including characteristic features of the object and the objects are collected into object groups. In a subsequent step, after the completion of the first step, a distinguishing condition is derived from the signatures of the objects in the object group only for the objects of the group. In a subsequent step for identifying the objects of the object group, the distinguishing condition determined in the previous further step is used, wherein with specified matching of the distinguishing conditions, the object is identified in the subsequent step.
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Citations
18 Claims
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1-9. -9. (canceled)
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10. A method for identifying articles in a plurality of process steps, the method which comprises:
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a first step, to be performed for each article; producing a signature with characteristic features of the article by using an image of the article, and storing the signature; combining the articles into at least two groups of articles; subsequently deriving, for at least one respective group of articles, at least one distinguishing criterion from the signatures of the articles in the respective group of articles for distinguishing the articles in the respective group of articles; a subsequent step for identifying each article, the identifying step including the following substeps; producing a new signature of the article by using a further image of the article; and comparing the new signature with the signatures stored in the first step, and, further, for each article in the respective group of articles; calculating a respective degree of match between the new signature and the stored signature; and identifying the article by way of an association between a stored signature and the new signature if a degree of match reaches or exceeds a prescribed limit. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for identifying articles, the apparatus comprising:
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a computation unit configured to produce and store a signature for each article using a depiction of the article, the signature containing characteristic features of the article; a grouping unit configured to combine the articles into at least two groups of articles; said computation unit being configured to subsequently derive, for at least one group of articles, at least one distinguishing criterion from the signatures of the articles in the group of articles for the purpose of distinguishing the articles in the group of articles; said computation unit being configured to identify each article in a subsequent identification step, performed with substeps in which said computation unit, again using a further depiction of the article, produces a new signature for the article and compares the new signature with stored signatures; and said computation unit further being configured to compare, for each article in the group of articles, the new signature with the stored signatures, and thereby to; calculate a respective degree of match between the new signature and a stored signature; and identify the article by way of an association between a stored signature and the new signature if a degree of match reaches or exceeds a prescribed limit.
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Specification