System and methods for merchandise checkout
First Claim
1. A method of checking out merchandise, comprising:
- (a) receiving visual image data of an object in a cart;
(b) analyzing the visual image data to extract one or more visual features;
(c) comparing the visual image data of the object and cart with data stored in a database to find a set of matches wherein the data comprises a plurality of scale-invariant features associated with a plurality of known objects, wherein the step of comparing is based on a scale invariant feature transform (SIFT) method;
(d) determining if the set of matches is found; and
(e) sending a recognition alert.
8 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods for recognizing and identifying items located on the lower shelf of a shopping cart in a checkout lane of a retail store environment for the purpose of reducing or preventing loss or fraud and increasing the efficiency of a checkout process. The system includes one or more visual sensors that can take images of items and a computer system that receives the images from the one or more visual sensors and automatically identifies the items. The system can be trained to recognize the items using images taken of the items. The system relies on matching visual features from training images to match against features extracted from images taken at the checkout lane. Using the scale-invariant feature transformation (SIFT) method, for example, the system can compare the visual features of the images to the features stored in a database to find one or more matches, where the found one or more matches are used to identify the items.
111 Citations
15 Claims
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1. A method of checking out merchandise, comprising:
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(a) receiving visual image data of an object in a cart; (b) analyzing the visual image data to extract one or more visual features; (c) comparing the visual image data of the object and cart with data stored in a database to find a set of matches wherein the data comprises a plurality of scale-invariant features associated with a plurality of known objects, wherein the step of comparing is based on a scale invariant feature transform (SIFT) method; (d) determining if the set of matches is found; and (e) sending a recognition alert. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for checking out a merchandise, comprising:
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at least one visual sensor for capturing an image of a portion of an object on a movable structure; and a subsystem coupled to the at least one visual sensor and configured to detect and recognize the object by analyzing the image of the portion of the object and movable structure; wherein the subsystem is adapted to identify scale-invariant features using a scale-invariant feature transform (SIFT) applied to said image of the object and moveable structure. - View Dependent Claims (15)
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Specification