公开(公告)号：US11885669B2

公开(公告)日：2024-01-30

申请号：US17594551

申请日：2020-04-24

Applicant: PROPHESEE

Inventor： Geoffrey F. Burns ,  Manuele Brambilla ,  Christoph Posch ,  Gaspard Florentz ,  Stephane Valente

IPC: G01H9/00

CPC classification number: G01H9/002

Abstract: The present disclosure generally relates to systems and methods for imaging and sensing vibrations of an object. In one implementation, a system is provided for detecting vibrations that comprises a sensor with a plurality of pixels, each pixel including at least one photosensitive element. The sensor is configured to output signals related to illumination on each pixel. The system also includes at least one processor configured to receive the output signals from the sensor and detect, based on the output signals, one or more polarities. The at least one processor is also configured to determine timestamps associated with the output signals, analyze the timestamps and the polarities to detect vibrations of an object in the field of view of the sensor, and determine one or more frequencies of the detected vibrations.

公开(公告)号：US12000692B2

公开(公告)日：2024-06-04

申请号：US17310753

申请日：2020-02-21

Applicant: PROPHESEE

Inventor： Guillaume Chican ,  Manuele Brambilla ,  Xavier Lagorce

IPC: G06T15/00 ,  G01B11/25 ,  G06F18/23 ,  G06T7/521 ,  G06V10/145 ,  G06V10/60 ,  G06V10/762 ,  G06V20/64

CPC classification number: G01B11/2513 ,  G06F18/23 ,  G06T7/521 ,  G06V10/145 ,  G06V10/60 ,  G06V10/762 ,  G06V20/64 ,  G06T2207/10016

Abstract: The present disclosure generally relates to systems and methods for three-dimensional image sensing. More specifically, and without limitation, this disclosure relates to systems and methods for detecting three-dimensional images, and using asynchronous image sensors for detecting the same. In one implementation, at least one processor determines a plurality of patterns associated with a plurality of electromagnetic pulses emitted by a projector onto a scene; receives, from an image sensor, one or more first signals based on reflections caused by the plurality of electromagnetic pulses; detects one or more first events corresponding to one or more first pixels of the image sensor based on the received signals; based on the one or more first events, initializes one or more first events more state machines; receives, from the image sensor, one or more second signals corresponding to the reflections; detects one or more second events corresponding to one or more second pixels of the image sensor based on the received signals; determines candidates for connecting the one or more state machines more second events to the one or more first events; and determines three-dimensional points for the one or more first pixels and the one or more second pixels based on the candidates and the one or more state machines.