Abstract: A method comprises, for each pixel of a depth map, acquiring samples and calculating a distance, and defining a window of N*N pixels with this image pixel at the center, N being an odd integer equal to or greater than 3, and, for each window, classifying the pixels of the window into groups, based on a threshold and distances calculated, calculating for each group, a number of pixels in the group, a confidence factor of the group equal to a sum of the confidence factors of the pixels each determined from the samples acquired for the pixel, and scanning the window from the central pixel by comparing, for each pixel, the confidence factor of the group of the pixel with a threshold and the number of pixels of the group of the pixel with another threshold, and determining whether the central pixel is retained, replaced or discarded.

Abstract: A method comprises, for each pixel of a depth map, acquiring samples and calculating a distance, and defining a window of N*N pixels with this image pixel at the center, N being an odd integer equal to or greater than 3, and, for each window, classifying the pixels of the window into groups, based on a threshold and distances calculated, calculating for each group, a number of pixels in the group, a confidence factor of the group equal to a sum of the confidence factors of the pixels each determined from the samples acquired for the pixel, and scanning the window from the central pixel by comparing, for each pixel, the confidence factor of the group of the pixel with a threshold and the number of pixels of the group of the pixel with another threshold, and determining whether the central pixel is retained, replaced or discarded.

Abstract: The present description concerns a system for determining a depth image of a scene, configured to project a spot pattern onto the scene and acquire an image of the scene; determining I and Q values of the image pixels; determining, for each pixel, at least one confidence value to form a confidence image; determining the local maximum points of the confidence image having a confidence value greater than a first threshold; selecting, for each local maximum point, pixels around the local maximum point having a confidence value greater than a second threshold; determining a value Imoy equal to the average of the I values of the selected pixels and a value Qmoy equal to the average of the Q values of the selected pixels; and determining the depth of the local maximum point based on values Imoy and Qmoy.

Abstract: A time-of-flight sensor includes a light emitting device configured to emit light rays toward a scene and a photosensitive pixel matrix configured to receive light signals reflected from the scene and to generate an image that includes dots associated with the light signals reflected from the scene. Each dot covers a number of pixels of the image. A processing unit is configured to, for each dot of the image, partition the pixels of the dot into at least one group of pixels and, for each group of pixels, compute a representative value of distance values of the pixels of this group. The representative distance value can then be applied to each pixel of the group of pixels.

Abstract: An indirect time-of-flight measurement sensor includes a photosensitive pixel array configured to acquire a succession of images of a scene during a given exposure time. The sensor includes a control unit configured to control the acquisition of the succession of images by the pixel array and to define an exposure time for this acquisition based on a pixel saturation rate of the array, distances between the sensor and elements of the scene, and a standard deviation of the distances between the sensor and the elements of the scene.

Abstract: The invention concerns an opto-electronic device for observing and/or aiming at a scene comprising a target (C), comprising an observation module (1) comprising an image sensor (10) and a stabiliser (11) for a line of sight (100) towards the target (C); and a telemeter (2) comprising a multi-shot pulsed laser (20) for emitting a plurality of outward laser pulses (An) in the direction of the target (C) to be telemetered, and a detector (21) for a plurality of return laser echoes (Rn) reflected by the scene in order to generate an electrical signal for each return laser echo (Rn) in order to effect a measurement of the distance to the target (C), each return laser echo (Rn) corresponding to an outward laser pulse (An); characterised in that it also comprises a sensor (3) of angular movement of the device with respect to the stabilised line of sight (100) in order to determine an angular radius (?n) of each outward laser pulse (An) with respect to the stabilised line of sight (100); and a selector (4)

Abstract: The invention concerns an opto-electronic device for observing and/or aiming at a scene comprising a target (C), comprising an observation module (1) comprising an image sensor (10) and a stabiliser (11) for a line of sight (100) towards the target (C); and a telemeter (2) comprising a multi-shot pulsed laser (20) for emitting a plurality of outward laser pulses (An) in the direction of the target (C) to be telemetered, and a detector (21) for a plurality of return laser echoes (Rn) reflected by the scene in order to generate an electrical signal for each return laser echo (Rn) in order to effect a measurement of the distance to the target (C), each return laser echo (Rn) corresponding to an outward laser pulse (An); characterised in that it also comprises a sensor (3) of angular movement of the device with respect to the stabilised line of sight (100) in order to determine an angular radius (?n) of each outward laser pulse (An) with respect to the stabilised line of sight (100); and a selector (4)

Abstract: An imaging system (10) comprises an objective (1), an image detector (2) placed in an image plane of the objective, and a calculation unit (3) intended for executing a digital processing of an image captured by the detector. The objective is suitable for modifying a wavefront of a radiation which enters the system, so that an illumination on the detector which is produced by a source of the radiation is constant for a large interval of variation of a distance of separation of the source from the objective. The depth of field of the system is thus increased, and the calculation unit can be simplified by using a constant filter. The modification of the wavefront is created by a profile which is invariant under any rotations about the optical axis of the objective.