Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Koninklijke Philips Corporation N.V.

Laurent Lucat

Nicolas Allezard

Patrick Sayd

Alexandre Hervieu

Adrien Chan-Hon-Tong

Sabri Bayoudh

A method for detecting events in a signal received on a detection sensor linked to a processor comprises: given events of nature {E}, a domain of votes D composed of I sub-domains D={[d, d[} with i=1 . . . I and a dictionary of micro-events {m}, initialize to an identical value an array S containing values of scores, S[e][p], where p is a spatial or temporal position index (p&#x2208;D), detect micro-events m(n=1 . . . N), located at t(n=1 . . . N), corresponding to a quantization of a local observation Oin the signal, for each micro-event mlocated at t, for each type of event 'e', for each sub-domain Dupdate the array S[e][t+p] by adding a constant value for all locations p&#x3f5;D, determine a set of events associated with an observation in the signal on the basis of array S, and detect the most probable event.

Method and system for detecting events of a known nature

A method of determining a triplet of parameters defining a ground plane based on a depth image includes determining a plurality of triplets of parameters, each defining a ground plane, spatial filtering of the parameters, and temporal filtering of the parameters. The temporal filtering is dependent on an indicator of quality of depth image data available for determination of the ground plane. The temporal filtering is dependent on an indicator of quality of the ground plane determined after spatial filtering. Similarly, the spatial filtering can be parameterized as a function of the two indicators. Globally, the more the estimated plane for a depth image can 'explain' the points in this image, the more accurately planes of the subsequent images are determined. For the spatial filtering, the ground plane is searched in a more limited space, and, for the temporal filtering, the previously estimated ground planes considered to a lesser degree.

Method of determining a ground plane on the basis of a depth image

A method for detection of a target present on at least two images of the same scene captured by separate cameras comprises a prior step for learning about targets under setup conditions and further comprises, under conditions of use, a simultaneous classification step for objects present on the images, the target being said to be detected as soon as an object is classified as being one of the targets learned during the learning step. The classification step includes a step for adapting at least one of the images to the setup conditions under which the learning step took place. Application: surveillance, assistance and safety based on stereoscopic images.

Method for detection of targets in stereoscopic images

This device () enables the user to personalize the call signal (ringing) which it is called on to deliver. This personalization consists of transforming a melody (FIG.) which the user hums into his microphone in order to transform it into a polyphonic melody (FIG.). Application: Ringing for mobile telephones.

Growing community of inventors

Le Mans, France

Laurent Lucat