公开(公告)号：US20180247422A1

公开(公告)日：2018-08-30

申请号：US15692794

申请日：2017-08-31

Applicant: STMicroelectronics SA

Inventor： Manu ALIBAY ,  Olivier POTHIER ,  Victor MACELA ,  Alain BELLON ,  Arnaud BOURGE

IPC: G06T7/521 ,  G01S17/08

CPC classification number: G06T7/521 ,  G01S17/08 ,  G06T7/55 ,  G06T7/593 ,  G06T2207/10012 ,  G06T2207/10021 ,  G06T2207/10028 ,  G06T2207/20212 ,  H04N13/207 ,  H04N13/254 ,  H04N13/271 ,  H04N2013/0081

Abstract: The method of determination of a depth map of a scene comprises generation of a distance map of the scene obtained by time of flight measurements, acquisition of two images of the scene from two different viewpoints, and stereoscopic processing of the two images taking into account the distance map. The generation of the distance map includes generation of distance histograms acquisition zone by acquisition zone of the scene, and the stereoscopic processing includes, for each region of the depth map corresponding to an acquisition zone, elementary processing taking into account the corresponding histogram.

公开(公告)号：US20170090580A1

公开(公告)日：2017-03-30

申请号：US14863493

申请日：2015-09-24

Applicant: STMICROELECTRONICS SA

Inventor： Olivier POTHIER

IPC: G06F3/01 ,  G01S17/58 ,  G06F3/03

CPC classification number: G06F3/017 ,  G01S17/58 ,  G06F3/0325

Abstract: An electronic device includes at least one laser source configured to direct laser radiation toward a user's hand. Laser detectors are configured to receive reflected laser radiation from the user's hand. A controller is coupled to the at least one laser source and laser detectors and configured to determine a set of distance values to the user's hand for each respective laser detector and based upon a time-of-flight of the laser radiation. The controller also determines a hand gesture from among a plurality of possible hand gestures based upon the sets of distance values using Bayesian probabilities.

公开(公告)号：US20180136735A1

公开(公告)日：2018-05-17

申请号：US15856603

申请日：2017-12-28

Applicant: STMicroelectronics SA

Inventor： Olivier POTHIER

IPC: G06F3/01 ,  G01S17/58 ,  G06F3/03

CPC classification number: G06F3/017 ,  G01S17/58 ,  G06F3/0325

Abstract: An electronic device includes at least one laser source configured to direct laser radiation toward a user's hand. Laser detectors are configured to receive reflected laser radiation from the user's hand. A controller is coupled to the at least one laser source and laser detectors and configured to determine a set of distance values to the user's hand for each respective laser detector and based upon a time-of-flight of the laser radiation. The controller also determines a hand gesture from among a plurality of possible hand gestures based upon the sets of distance values using Bayesian probabilities.

公开(公告)号：US20180014006A1

公开(公告)日：2018-01-11

申请号：US15204185

申请日：2016-07-07

Applicant: STMICROELECTRONICS SA

Inventor： Olivier POTHIER ,  Arnaud Bourge

IPC: H04N13/02 ,  H04N5/374 ,  H04N5/33 ,  H04N5/378 ,  G06T3/40

CPC classification number: H04N13/271 ,  G06T3/40

Abstract: An electronic device includes a SPAD array and readout circuitry coupled thereto. The readout circuitry generates a depth map having a first resolution, and a signal count map having a second resolution greater than the first resolution. The depth map corresponds to distance observations to an object. The signal count map corresponds to intensity observation sets of the object, with each intensity observation set including intensity observations corresponding to a respective distance observation in the depth map. An upscaling processor is coupled to the readout circuitry to calculate upscaling factors for each intensity observation set so that each distance observation has respective upscaling factors associated therewith. The depth map is then upscaled from the first resolution to the second resolution based on the respective upscaling factors.