公开(公告)号：US11688198B1

公开(公告)日：2023-06-27

申请号：US17457551

申请日：2021-12-03

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Rajeev Ranjan ,  Gerard Guy Medioni ,  Manoj Aggarwal ,  Dilip Kumar

IPC: G06V40/13 ,  G06V10/94 ,  G06F18/213 ,  G06F18/214

CPC classification number: G06V40/1318 ,  G06F18/213 ,  G06F18/2148 ,  G06V10/95

Abstract: A biometric identification system uses inputs acquired using different modalities. A model having an intersection branch and an XOR branch is trained to determine an embedding using features present in all modalities (an intersection of modalities), and features that are distinctive to each modality (an XOR of that modality relative to the other modality(s)). During training, a first loss function is used to determine a first loss value with respect to the branches. Probability distributions are determined for the output from the branches, corresponding to the intersection and XORs of each modality. A second loss function uses these probability distributions to determine a second loss value. A total loss function for training the model may be a sum of the first loss and the second loss. Once trained, the model may process query inputs to determine embedding data for comparison with embedding data of a previously enrolled user.

公开(公告)号：US11663805B1

公开(公告)日：2023-05-30

申请号：US17209845

申请日：2021-03-23

Applicant: Amazon Technologies, Inc.

Inventor： Zheng Tang ,  Prithviraj Banerjee ,  Manoj Aggarwal ,  Gerard Guy Medioni

IPC: G06K9/62 ,  G06V10/25 ,  G06V40/12

CPC classification number: G06V10/25 ,  G06K9/6215 ,  G06K9/6262 ,  G06V40/1335 ,  G06V40/1347 ,  G06V40/1365

Abstract: This disclosure describes a user-recognition system that may perform one or more verification methods upon identifying a previous image that matches a current image of a palm of a user. For instance, the user-recognition system may perform the verification method(s) as part of the recognition method (e.g., after recognizing a matching image), in response to an audit process, in response to a request to re-analyze the image data (e.g., because a user indicates that he or she was not associated with a particular purchase or shopping session), and/or the like.

公开(公告)号：US20190392189A1

公开(公告)日：2019-12-26

申请号：US16014843

申请日：2018-06-21

Applicant: AMAZON TECHNOLOGIES, INC

Inventor： Dilip Kumar ,  Manoj Aggarwal ,  George Leifman ,  Gerard Guy Medioni ,  Nikolai Orlov ,  Natan Peterfreund ,  Korwin Jon Smith ,  Dmitri Veikherman ,  Sora Kim

IPC: G06K9/00 ,  G06N3/04

Abstract: A non-contact biometric identification system includes a hand scanner that generates images of a user's palm. Images are acquired using light of a first polarization at a first time show surface characteristics such as wrinkles in the palm while images acquired using light of a second polarization at a second time show deeper characteristics such as veins. Within the images, the palm is identified and subdivided into sub-images. The sub-images are subsequently processed to determine feature vectors present in each sub-image. A current signature is determined using the feature vectors. A user may be identified based on a comparison of the current signature with a previously stored reference signature that is associated with a user identifier.

公开(公告)号：US12277794B1

公开(公告)日：2025-04-15

申请号：US17303623

申请日：2021-06-03

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Baomin Wang ,  Umer Shahid ,  Tianyi Wang ,  Georgios Skolianos ,  Rui Zhao ,  Manoj Aggarwal ,  Gerard Guy Medioni

IPC: G06V10/141 ,  G06V10/143 ,  G06V10/56 ,  G06V40/10

Abstract: An input device determines presence of an actual user, instead of an artifact, by using multi-wavelength reflectance spectroscopy. Light sources are operated to illuminate an object with different colors of light at different times. A detector determines, at those different times, intensity data indicative of intensity light of these different colors as reflected from the object. The intensity data is processed to determine whether the object is part of a user or is an artifact. For example, if the object is deemed to be a user, biometric input may be acquired. The biometric input may then be processed to identify the user. The input device may be used at various locations, such as at an entry portal, point of sale, and so forth.

公开(公告)号：US11756036B1

公开(公告)日：2023-09-12

申请号：US16714348

申请日：2019-12-13

Applicant: Amazon Technologies, Inc.

Inventor： Manoj Aggarwal ,  Prithviraj Banerjee ,  Gerard Guy Medioni ,  Brad Musick

IPC: G06V40/12 ,  G06Q20/40 ,  G06V10/46 ,  G06V40/13 ,  G06F18/2321

CPC classification number: G06Q20/40145 ,  G06F18/2321 ,  G06V10/462 ,  G06V40/13 ,  G06V40/1359 ,  G06V40/1376

Abstract: Techniques for an identity-verification system to analyze image data representing palms of users using a segmented, characteristic-based approach. The system may compare palm-feature data representing characteristics of a palm of a user (or “query palm”) with stored palm-feature data of palms for user profiles (or “stored palms”). For instance, the system may identify characteristics of the query palm having salient or discriminative features, and compare palm-feature data for those discriminative characteristics to palm-feature data representing corresponding characteristics of stored palms of enrolled users. Additionally, the system may compare characteristics of the query palm with corresponding characteristics of stored palms until the system is confident that the query palm corresponds to a stored palm of a user profile. By performing simpler characteristic-by-characteristic sameness verification tasks, the system may reduce the amount of time and computing resources utilized to verify an identity of a user as opposed to top-level, palm-identity verification.

公开(公告)号：US11734949B1

公开(公告)日：2023-08-22

申请号：US17210170

申请日：2021-03-23

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Igor Kviatkovsky ,  Shunit Haviv ,  Manoj Aggarwal ,  Gal Novich ,  Gerard Guy Medioni

IPC: G06V40/12 ,  G06T7/73 ,  G06V40/10 ,  G06V40/13

CPC classification number: G06V40/1365 ,  G06T7/74 ,  G06V40/107 ,  G06V40/117 ,  G06V40/1318 ,  G06T2207/30196

Abstract: Images of a hand are obtained by a camera. These images may depict the fingers and palm of the user. A pose of the hand relative to the camera may vary due to rotation, translation, articulation of joints in the hand, and so forth. One or more canonical images are generated by mapping the images to a canonical model. A first embedding model is used to determine a first embedding vector representative of the palm as depicted in the canonical images. A second embedding model is used to determine a set of second embedding vectors, each representative of individual fingers as depicted in the canonical images. Embedding distances in the embedding space from the embedding vectors to a closest match of previously stored embedding vectors are multiplied together to determine an overall distance. If the overall distance is less than a threshold value, an identity of a user is asserted.

公开(公告)号：US11017203B1

公开(公告)日：2021-05-25

申请号：US16446323

申请日：2019-06-19

Applicant: Amazon Technologies, Inc.

Inventor： Manoj Aggarwal ,  Jason Garfield ,  Korwin Jon Smith ,  Jordan Tyler Williams

IPC: G06K9/00 ,  G06K9/62

Abstract: This disclosure describes techniques for identifying users that are enrolled for use of a user-recognition system and updating enrollment data of these users over time. To enroll in the user-recognition system, the user may initially scan his or her palm. The resulting image data may later be used when the user requests to be identified by the system by again scanning his or her palm. However, because the characteristics of user palms may change over the time, the user-recognition system may continue to build more and more data for use in recognizing the user, in addition to removing older data that may no longer accurately represent current characteristics of respective user palms.

公开(公告)号：US12271456B1

公开(公告)日：2025-04-08

申请号：US17808355

申请日：2022-06-23

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Manoj Aggarwal ,  Gerard Guy Medioni ,  Chad Desjardins ,  Dilip Kumar

IPC: G06F21/32 ,  G06V10/774 ,  G06V40/12 ,  G06V40/50

Abstract: Maintaining the security of biometric data is an utmost priority. Biometric data is secured using one or more techniques. With one technique, biometric input such as images of a user's palm is used to generate first primary data (PD). The original biometric input is deleted from temporary secure storage while the first PD is securely stored. The first PD may then be processed later to determine a second PD. The first PD may then be deleted, and the second PD subsequently used. With another technique, biometric input or a PD may be processed by a first model to determine first secondary data (SD) that is representative of features of a particular user within a first embedding space. Later the PD may be processed by a second model to determine a second SD in a second embedding space. The first SD is deleted, and the second SD subsequently used.

公开(公告)号：US12254718B1

公开(公告)日：2025-03-18

申请号：US18615639

申请日：2024-03-25

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Quanfu Fan ,  Hongcheng Wang ,  Carlos D. Castillo ,  Manoj Aggarwal ,  Gerard Guy Medioni

IPC: G06V40/50 ,  G06V10/82 ,  G06V40/12 ,  G06V40/13

Abstract: User enrollment to a biometric identification system begins on selected general input devices (GID) such as smartphones. The user may enter identification data (e.g. name) and use a red-green-blue (RGB) camera of the GID to acquire a first image (e.g. hand). The first image is processed using both a first model to determine a first representation and a second model to determine a second representation. Upon presentation of a hand at a biometric input device, a second image is acquired using a first modality and a third image is acquired using a second modality. The second image is processed using the first model to determine a third representation. The third image is processed using the second model to determine a fourth representation. Given a match between both the first and third representations, as well as the second and fourth representations, enrollment is completed by storing the third and fourth representations.

公开(公告)号：US11900711B1

公开(公告)日：2024-02-13

申请号：US17075926

申请日：2020-10-21

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Dilip Kumar ,  Manoj Aggarwal ,  George Leifman ,  Gerard Guy Medioni ,  Nikolai Orlov ,  Natan Peterfreund ,  Korwin Jon Smith ,  Dmitri Veikherman ,  Sora Kim

IPC: G06V40/13 ,  G06V40/12 ,  G06N3/045

CPC classification number: G06V40/1318 ,  G06N3/045 ,  G06V40/1347 ,  G06T2207/20084 ,  G06V40/1341

Abstract: An identification system includes one or more infrared light sources and a camera that acquires images of a user's palm. For example, at a first time, one or more first images may be acquired by the camera using infrared light with a first polarization that represent external characteristics of the user's palm. At a second time, one or more second images may be acquired using infrared light with a second polarization that represent internal characteristics of the user's palm. These images are processed to determine a first set of feature vectors and a second set of feature vectors. A current signature may be determined using the first set of feature vectors and the second set of feature vectors. In addition, a user may be identified based on a comparison of the current signature and previously stored reference signatures that are associated with candidate user identifiers.