Systems and methods for tracking optical codes

A method for locating barcodes applied to objects in a system configured to expand a field of view of a scene imaged by a camera having an image sensor, the method comprising:

• receiving a first image captured by the camera at a first time, the first image including a first field of view and a second field of view, wherein the first field of view of the first image depicts a first barcode fragment and the second field of view of the first image depicts a second barcode fragment;
• identifying, based on the first image, a first position of the first barcode fragment within the first field of view of the first image;
• identifying, based on the first image, a first position of the second barcode fragment within the second field of view of the first image;
• receiving a second image captured by the camera at a second time, the second image including a first field of view and a second field of view, wherein the first field of view of the second image depicts a third barcode fragment and the second field of view of the second image depicts a fourth barcode fragment, the second image different from the first image;
• identifying, based on the second image, a second position of the third barcode fragment within the first field of view of the second image;
• identifying, based on the second image, a second position of the fourth barcode fragment within the second field of view of the second image;
• predicting a range of possible positions of the first barcode fragment at the second time based on a first tracking model that tracks the first barcode fragment based on the first position of the first barcode fragment;
• predicting a range of possible limited positions of the second barcode fragment at the second time based on a second tracking model that tracks the second barcode fragment based on the first position of the second barcode fragment;
• determining whether the second position of the third barcode fragment is within the range of possible positions of the first barcode fragment at the second time;
• determining whether the second position of the fourth barcode fragment is within the range of possible positions of the second barcode fragment at the second time;
• and
• determining that the first barcode fragment, the second barcode fragment, the third barcode fragment, and the fourth barcode fragment correspond to a same barcode if the second position of the third barcode fragment is within the range of possible positions of the first barcode fragment and the second position of the fourth barcode fragment is within the range of possible positions of the second barcode fragment at the second time.

A system for locating barcodes applied to objects comprising:

• a camera configured to capture images of barcodes applied to objects;
• and
• a processor in communication with the camera configured to:
• receive a first image of a first barcode fragment applied to a first object captured by the camera at a first time;
• identify a first position of the first barcode fragment based on the first image;
• receive a second image of a second barcode fragment captured by the camera at a second time, the second image different from the first image;
• identify a second position of the second barcode fragment based on the second image;
• predict a range of possible positions of the first barcode fragment at the second time based on a tracking model that tracks the first barcode fragment based on the first position;
• and
• determine that the first barcode fragment and the second barcode fragment correspond to a same barcode applied to a first object if the second position is within the range of possible positions of the first barcode fragment at the second time.

A system for locating barcodes applied to objects, the system configured to expand a field of view of a scene imaged by a camera having an image sensor, the system comprising:

• the camera configured to capture images of barcodes applied to objects;
• and
• a processor in communication with the camera configured to:
• receive a first image captured by the camera at a first time, the first image including a first field of view and a second field of view, wherein the first field of view of the first image depicts a first barcode fragment and the second field of view of the first image depicts a second barcode fragment;
• identify, based on the first image, a first position of the first barcode fragment within the first field of view of the first image;
• identify, based on the first image, a first position of the second barcode fragment within the second field of view of the first image;
• receive a second image captured by the camera at a second time, the second image including a first field of view and a second field of view, wherein the first field of view of the second image depicts a third barcode fragment and the second field of view of the second image depicts a fourth barcode fragment, the second image different from the first image;
• identify, based on the second image, a second position of the third barcode fragment within the first field of view of the second image;
• identify, based on the second image, a second position of the fourth barcode fragment within the second field of view of the second image;
• predict a range of possible positions of the first barcode fragment at the second time based on a first tracking model that tracks the first barcode fragment based on the first position of the first barcode fragment;
• predict a range of possible positions of the second barcode fragment at the second time based on a second tracking model that tracks the second barcode fragment based on the first position of the second barcode fragment;
• determine whether the second position of the third barcode fragment is within the range of possible positions of the first barcode fragment at the second time;
• determine whether the second position of the fourth barcode fragment is within the range of possible positions of the second barcode fragment at the second time;
• and
• determine that the first barcode fragment, the second barcode fragment, the third barcode fragment, and the fourth barcode fragment correspond to a same barcode if the second position of the third barcode fragment is within the range of possible positions of the first barcode fragment and the second position of the fourth barcode fragment is within the range of possible positions of the second barcode fragment at the second time.