公开(公告)号：US09753119B1

公开(公告)日：2017-09-05

申请号：US14167813

申请日：2014-01-29

Applicant: Amazon Technologies, Inc.

Inventor： Kavitha Velusamy ,  Ning Yao ,  Wai Chung Chu ,  Sowmya Gopalan ,  Qiang Liu ,  Rahul Agrawal ,  Manika Puri

IPC: G01S5/20

CPC classification number: G01S5/20 ,  G01S5/18 ,  G01S5/22 ,  G01S17/023 ,  G01S17/36 ,  G01S17/42 ,  G01S17/46 ,  G01S17/89

Abstract: A system may utilize sound localization techniques, such as time-difference-of-arrival techniques, to estimate an audio-based sound source position from which a sound originates. An optical image or depth map of an area containing the sound source location may then captured and analyzed to detect an object that is known or expected to have produced the sound. The position of the object may also be determined based on the analysis of the optical image or depth map. The position of the sound source may then be determined based at least in part on the position of the detected object or on a combination of the audio-based sound source position and the determined position of the object.

公开(公告)号：US09740924B1

公开(公告)日：2017-08-22

申请号：US14498160

申请日：2014-09-26

Applicant: Amazon Technologies, Inc.

Inventor： Sowmya Gopalan ,  Manika Puri

IPC: G06K9/00 ,  G06K9/46

CPC classification number: G06K9/00389 ,  G06K9/00536 ,  G06K9/4604 ,  G06K9/4642 ,  G06K9/4647 ,  G06K9/48

Abstract: In order to classify the presented pose of a human hand, a feature distribution map of the pose is compared to reference feature distribution maps. To generate a feature distribution map, each contour point of a hand is analyzed to determine a corresponding feature set. The feature set of a contour point includes a distance feature and an angle feature of the contour point in relation to one of its neighboring contour points. The feature sets generated from an observed pose are compared to feature sets of reference poses to determine which of the reference poses most closely matches the presented pose.