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公开(公告)号：US20230316706A1
公开(公告)日：2023-10-05
申请号：US17693007
申请日：2022-03-11
Applicant: Apple Inc.
Inventor： Assaf Metuki , Lukas Polok , Danny Gal , Liran Fishel
CPC classification number: G06V10/757 , G06V10/761
Abstract: Embodiments of the present disclosure relate to selecting a subset of keypoint descriptors of two images for match operation based on their orientation angles indicated in headers of the keypoint descriptors. The keypoint descriptors in the two images are matched by first comparing their headers and then performing vector distance determination. During the header comparison operation, a header of a descriptor of a first image is compared only with headers of keypoint descriptors of a second image in a discrete orientation angle range corresponding to an orientation angle indicated by the header of the first image descriptor or keypoint descriptors of the second image in adjacent discrete orientation angle ranges. After the headers of the keypoint descriptors satisfying one or more matching criteria are determined, distance determination operations are performed between the keypoint descriptors while the remaining keypoint descriptors are discarded without determining their distances.
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公开(公告)号：US12169959B2
公开(公告)日：2024-12-17
申请号：US17693007
申请日：2022-03-11
Applicant: Apple Inc.
Inventor： Assaf Metuki , Lukas Polok , Danny Gal , Liran Fishel
Abstract: Embodiments of the present disclosure relate to selecting a subset of keypoint descriptors of two images for match operation based on their orientation angles indicated in headers of the keypoint descriptors. The keypoint descriptors in the two images are matched by first comparing their headers and then performing vector distance determination. During the header comparison operation, a header of a descriptor of a first image is compared only with headers of keypoint descriptors of a second image in a discrete orientation angle range corresponding to an orientation angle indicated by the header of the first image descriptor or keypoint descriptors of the second image in adjacent discrete orientation angle ranges. After the headers of the keypoint descriptors satisfying one or more matching criteria are determined, distance determination operations are performed between the keypoint descriptors while the remaining keypoint descriptors are discarded without determining their distances.
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公开(公告)号：US20240019522A1
公开(公告)日：2024-01-18
申请号：US18353252
申请日：2023-07-17
Applicant: Apple Inc.
Inventor： Siddharth S. Hazra , Brad W. Simeral , Oleg Naroditsky , Lukas Polok , Adam S. Howell , Mehrad Tavakoli
CPC classification number: G01S5/019 , H04W64/00 , G01S5/02585
Abstract: Performing a combination localization technique includes determining a target localization parameter, selecting a combination localization technique in accordance with the target localization parameter, including a first localization technique associated with a first power error time profile, and a second localization technique associated with a second power error time profile. A device location is determined using the first localization technique for a first time period in accordance with the first power error time profile, and an updated device location is determined using the second localization technique in response to a triggering condition. A further updated device location is determined using the first localization technique following the first time period based on the updated device location. At least one of a combined energy value and a combined maximum error rate for the combination localization technique satisfies the target localization parameter.
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