公开(公告)号：US10902280B1

公开(公告)日：2021-01-26

申请号：US16460948

申请日：2019-07-02

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Gang Hua ,  Li Guan ,  Dilip Kumar ,  Gerard Guy Medioni

IPC: G06K9/46 ,  G06T17/20 ,  G06F16/532 ,  G06K9/00

Abstract: The presence of an object in a query image may be searched for using a feature of the query image. A local descriptor value for the feature is first determined. Previously stored object data for various 3D objects is then retrieved, with each set of stored object data including a probability distribution that describes a feature of a 3D object as obtained from images at different camera poses. A probability value is then determined using the local descriptor value for the feature in the query image and the available distribution data from the stored object data. The distribution data is then ranked based on the resulting probability values and the highest ranked distribution data is associated with the feature in the query image. Output data may also be generated to identify the 3D object in the query image based on an object identifier of the highest ranked distribution data.

公开(公告)号：US10339411B1

公开(公告)日：2019-07-02

申请号：US14868205

申请日：2015-09-28

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Gang Hua ,  Li Guan

IPC: G06K9/00 ,  G06K9/46 ,  G06T7/00 ,  G06T17/20 ,  G06F16/532

Abstract: A three-dimensional (3D) object may be represented by object data. The object data includes probability distributions that describe particular features on the 3D object. A probability distribution represents the value of local descriptors for the same feature as obtained from a plurality of images at different camera poses relative to the 3D object. A query image may be processed to determine features, and the query local descriptors of those features may be used to test against previously stored probability distributions. A combination of probability distributions that show a high probability of corresponding to the query local descriptors may be used to identify the 3D object appearing in the query image.