Error tolerant system for reading tags

    公开(公告)号:US10984205B1

    公开(公告)日:2021-04-20

    申请号:US16127000

    申请日:2018-09-10

    Abstract: A tag comprises cells represented by marks, such as white and black, arranged in a predetermined pattern. Reference cells are used to determine the edges of the tag and orientation, while others are used to encode data and error correction data. During processing, a tag is detected based on a variability metric within a given region of an image exceeding a threshold value. Once detected, the orientation of the tag is determined using the reference cells. Confidence values, indicative of a likelihood that the cell is a particular cell value, such as white or black, are determined for each cell in a first set of cell values. If the first set is invalid, the cell values for a set of lowest confidence cell values are inverted to produce a second set of cell values. The second set is tested, and if valid, is used to produce output data.

    Techniques for storing images depicting identifiers

    公开(公告)号:US12094203B1

    公开(公告)日:2024-09-17

    申请号:US17348029

    申请日:2021-06-15

    CPC classification number: G06V20/40 G06F18/241 G06K7/1413 G06V30/14 G06V30/19

    Abstract: This disclosure describes, in part, techniques for collecting image data representing item identifiers, such as barcodes. For instance, system(s) may receive image data representing images, where the images depict at least a portion of an identifier located on an item. The system(s) may then identify a first portion of the image data representing an image that that is associated a low confidence level. Next, the system(s) may identify a second portion of the image data representing additional images that are associated high confidence levels. Using results for this the second portion of the image data, the system(s) may determine a ground truth result for the first portion of the image data. The system(s) may then store, in one or more databases, data representing the ground truth result in association with the first portion of the image data.

    Identifying item barcodes
    15.
    发明授权

    公开(公告)号:US10963659B1

    公开(公告)日:2021-03-30

    申请号:US16455030

    申请日:2019-06-27

    Abstract: This disclosure describes using trained classifiers and additional data to identify items placed into a tote. The techniques may use a first classifier on image data representing an item to determine a region associated with a barcode of the item and may use one or more second classifiers to analyze the region for determining a candidate barcode. The techniques may then determine whether the candidate barcode corresponds to the actual barcode of the item. If so, the techniques may update a virtual cart associated with a user account to indicate the acquisition of the item. If not, then the techniques may use the additional data for identifying the item. For example, the techniques determine a current location of a tote for determining items that are within a threshold distance of the location and may use this information, along with the candidate barcode, to identify the item placed into the tote.

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