Abstract: Systems and methods for adjusting a signal used for the detection of the movement of an object in a space represented by a set of data Aij, associated with pixels forming a multidimensional space i, j, evolving with time, and represented at a succession of instants T, wherein the data are associated with the parameter A in the form of a digital signal DATA(A), composed of a sequence Aijt of binary numbers of n bits associated with synchronization signals defining the instant T of the space, and the position i, j in this space, in which the signals Aijt are received, in which the threshold and the gain in detection sensitivity of the parameter A are adapted. The detection sensitivity of the parameter variation is also adapted.

Abstract: Systems and methods for localizing a shape in a space represented by pixel data forming a multidimensional space i, j, evolving with time, and represented at a succession of instants T, wherein the data is associated with a temporal parameter A, B, . . . in the form of digital signals DATA(A), DATA(B), . . . composed of a sequence Aijt, Bijt, . . . of binary numbers of n bits associated with synchronization signals defining the instant T of the space and the position i, j in this space, at which the signals Aijt, Bijt, . . . were received.

Abstract: A visual perception processor comprises histogram calculation units, which receive the data DATA(A), DATA(B), . . . DATA(E) via a single data bus and supplying classification information to a single time coincidences bus. In a preferred embodiment the histogram calculation units are organized into a matrix.

Abstract: In a process of detecting a person falling asleep, an image of the face of the person is acquired. Pixels of the image having characteristics corresponding to an eye of the person are selected and a histogram is formed of the selected pixels. The histogram is analyzed over time to identify each opening and closing of the eye, and characteristics indicative of the person falling asleep are determined. A sub-area of the image including the eye may be determined by identifying the head or a facial characteristic of the person, and then identifying the sub-area using an anthropomorphic model. To determine openings and closings of the eyes, histograms of shadowed pixels of the eye are analyzed to determine the width and height of the shadowing, or histograms of movement corresponding to blinking are analyzed.

Abstract: The purpose of this invention is a process and a device operating in real time for identifying and localizing an area in relative movement in a scene and determining the speed and oriented direction of this relative movement in real time.

Abstract: The purpose of this invention is a process and a device operating in real time for identifying and localizing an area in relative movement in a scene and determining the speed and oriented direction of this relative movement in real time. The process carries out temporal processing of the digital video input signal S(PI) that consists in deducing, from the variations between the value of each pixel in a frame and in the immediately preceding frame, a binary signal DP identifying whether or not there was a significant variation and a digital signal CO representing the magnitude of this variation, and a spatial processing consisting in distributing in a matrix these two signals successively for a single frame that is scanned through the matrix, and deducing the required relative movement and its parameters from this matrix distribution.

Abstract: Systems and methods for adjusting a signal used for the detection of the movement of an object in a space represented by a set of data Aij, associated with pixels forming a multidimensional space i, j, evolving with time, and represented at a succession of instants T, wherein the data are associated with the parameter A in the form of a digital signal DATA(A), composed of a sequence A1jt of binary numbers of n bits associated with in which the signals A1jt are received, in which the threshold and the gain in detection sensitivity of the parameter A are adapted.

Abstract: The invention relates to a method and device using an optoelectronic sensor in combination with an electronic unit arranged inside a motor vehicle. The sensor is adjusted in line with the head of the driver sitting in said motor vehicle at the same time as the inner rear-view mirror, which comprises a one-way mirror behind which the sensor is positioned. After detecting the presence of a driver seated in the motor vehicle they frame first the whole face and then the eyes of the driver in the video signal raser emitted by the sensor aided by the electronic unit and then determine the successive durations of blinking episodes, which are compared with a limit value situated between one duration typical of an awake person and another duration typical of a drowsy person. A signal (transmitted by an alram unit) suitable for waking the driver is triggered when the duration of blinking exeeds the limit.