US 9,317,730 B1Granted

Tuning process for a handheld scanner

AssigneeCognex Corporation

InventorsEarle Stokes, James A. Negro

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Abstract

Methods and systems for auto-tuning a handheld scanning device that can account for changes in the orientation between the handheld scanning device and a presented symbol can include capturing a first image containing a presented symbol, recording an orientation parameter and parameters associated with capturing the first image containing the presented symbol, capturing a subsequent image containing the presented symbol, recording an orientation parameter of the presented symbol contained in the subsequent image, comparing the orientation parameter of the symbol contained in the subsequent images to the orientation parameter of the presented symbol contained in the subsequent image, determining if the orientation parameter of the presented symbol contained in the subsequent images is substantially similar to the orientation parameter of the symbol contained in the first image, and recording parameters associated with capturing the subsequent images containing the presented symbol.

Claims26

Dependent claims

A method for auto-tuning a handheld scanning device, the method comprising the steps of:

capturing a first image, the first image containing a presented symbol;
recording at least one orientation parameter of the presented symbol contained in the first image;
recording at least one of a plurality of parameters associated with capturing the first image containing the presented symbol;
capturing a subsequent image, the subsequent image containing the presented symbol;
recording at least one orientation parameter of the presented symbol contained in the subsequent image;
comparing the at least one orientation parameter of the presented symbol contained in the subsequent image to the at least one orientation parameter of the presented symbol contained in the first image;
determining if the at least one orientation parameter of the presented symbol contained in the subsequent image is substantially similar to the at least one orientation parameter of the presented symbol contained in the first image;
and
recording at least one of a plurality of parameters associated with capturing the subsequent image containing the presented symbol when the at least one orientation parameter of the presented symbol contained in the subsequent image is substantially similar to the at least one orientation parameter of the presented symbol contained in the first image.

6 more elements

A method for auto-tuning a handheld scanning device, the method comprising the steps of:

capturing a first image, the first image containing a presented symbol;
recognizing the presented symbol contained in the first image;
recording at least one orientation parameter of the presented symbol contained in the first image;
recording at least one of a plurality of parameters associated with capturing the first image containing the presented symbol;
capturing a subsequent image, the subsequent image containing the presented symbol;
recognizing the presented symbol contained in the subsequent image;
recording at least one orientation parameter of the presented symbol contained in the subsequent image;
comparing the at least one orientation parameter of the presented symbol contained in the subsequent image to the at least one orientation parameter of the presented symbol contained in the first image;
determining if the at least one orientation parameter of the presented symbol contained in the subsequent image is substantially similar to the at least one orientation parameter of the presented symbol contained in the first image;
and
performing a non-substantially similar function when the at least one orientation parameter of the presented symbol contained in the subsequent image is not substantially similar to the at least one orientation parameter of the presented symbol contained in the first image.

8 more elements

An auto-tuning handheld scanning device for recognizing presented symbols, the device comprising:

an image sensor;
a memory operatively coupled to the image sensor;
and
a processor operatively coupled to the image sensor and the memory, the processor programmed to perform the steps of:
capturing a first image with the image sensor, the first image containing a presented symbol;
storing at least one orientation parameter of the presented symbol contained in the first image in the memory;
storing at least one of a plurality of parameters associated with capturing the first image containing the presented symbol in the memory;
capturing a subsequent image with the image sensor, the subsequent image containing the presented symbol;
storing at least one orientation parameter of the presented symbol contained in the subsequent image in the memory;
comparing the at least one orientation parameter of the presented symbol contained in the subsequent image to the at least one orientation parameter of the presented symbol contained in the first image;
determining if the at least one orientation parameter of the presented symbol contained in the subsequent image is substantially similar to the at least one orientation parameter of the presented symbol contained in the first image;
storing at least one of a plurality of parameters associated with capturing the presented symbol contained in the subsequent image in the memory when the at least one orientation parameter of the presented symbol contained in the subsequent image is substantially similar to the at least one orientation parameter of the presented symbol contained in the first image;
and
performing a tuning process based on at least one of the plurality of parameters stored in the memory.

11 more elements

Dependencies are inferred from the claim text.