Code reader and method for the online verification of a code
AssigneeSick AG
InventorsPascal Schuler, Dietram Rinklin, Sascha Burghardt
Life of this patent
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Abstract
A code reader (10) having an image sensor (20) for the generation of images of a detection zone (12) resolved into pixels is provided having a decoding unit (24) in order to identify code regions (14) in the images and to readout their coded information, as well as having a verification unit (28) for evaluating the code quality in accordance with predefined criteria. In this connection the verification (28) is configured to initially generate a normalized verification image of the code from the code regions (14) by means of image processing for the verification.
Claims17
A code reader (10) comprising
- an image sensor (20) for the generation of images of a detection zone (12) resolved in pixels,
- a decoding unit (24) in order to identify code regions (14) in the images and to read out their coded information, as well as
- a verification unit (28) for evaluating the code quality in order to classify the code with respect to different quality criteria predefined by standards or to ensure, based on the criteria of the standards, that the code has at least a predefined code quality,
- wherein the verification unit (28) is configured to initially generate a normalized verification image of the code from the code regions (14) by means of image processing for the verification, wherein the normalized verification image corresponds to an image of an offline verification device having fixed physical boundary conditions and to thus achieve quality control of the code in accordance with accepted standards comparable to the offline verification device.
A method for online verification of a code (14) which is detected by an image sensor (20) of a code reader (10) in an image resolved in pixels, wherein the coded information of the code (14) is read out and a quality of the code is evaluated in order to classify the code with respect to different quality criteria predefined by standards or to ensure, based on the criteria of the standards, that the code has at least a predefined code quality,
- comprising the step of initially generating a normalized verification image of the code (14) from the image by means of image processing for the verification, wherein the normalized verification image corresponds to an image of an offline verification device having fixed physical boundary conditions and to thus achieve quality control of the code in accordance with accepted standards comparable to the offline verification device.
Dependencies are inferred from the claim text.