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公开(公告)号：US11126861B1
公开(公告)日：2021-09-21
申请号：US16714258
申请日：2019-12-13
Applicant: Digimarc Corporation
Inventor： Eric D. Evans , Bryan Olmstead
Abstract: Inventory on a rack of store shelves is monitored by a camera-equipped system that senses when items have been removed. Image data is desirably sensed at plural spectral bands, to enhance item identification by digital watermark and/or other image recognition techniques. The system can be alert to the presence of nearby shoppers, and change its mode of operation in response, e.g., suppressing flash illumination or suspending image capture. The system may self-calibrate to the geometry of shelving in its field of view, and affine-correct captured imagery based on the camera's viewpoint. A great many other features and arrangements are also detailed.
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公开(公告)号：US20220076027A1
公开(公告)日：2022-03-10
申请号：US17476608
申请日：2021-09-16
Applicant: Digimarc Corporation
Inventor： Eric D. Evans , Bryan Olmstead
Abstract: Inventory on a rack of store shelves is monitored by a camera-equipped system that senses when items have been removed. Image data is desirably sensed at plural spectral bands, to enhance item identification by digital watermark and/or other image recognition techniques. The system can be alert to the presence of nearby shoppers, and change its mode of operation in response, e.g., suppressing flash illumination or suspending image capture. The system may self-calibrate to the geometry of shelving in its field of view, and affine-correct captured imagery based on the camera's viewpoint. A great many other features and arrangements are also detailed.
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