Abstract: The invention concerns a method for activating a function by using a measurement taken from at least one digital image (10) having at least two colors (195, 196) and originating from an image-capturing apparatus, the method including measuring the relative sharpness (190) between at least two colors in at least one region R of the image, and Controlling at least one action (191) depending on the measured relative sharpness.

Abstract: The invention concerns a method for activating a function by using a measurement taken from at least one digital image (10) having at least two colours (195, 196) and originating from an image-capturing apparatus, the method including measuring the relative sharpness (190) between at least two colours in at least one region R of the image, and controlling at least one action (191) depending on the measured relative sharpness.

Abstract: A method for activating a function by using a measurement taken from at least one digital image having at least two colors and originating from an image-capturing apparatus, wherein a relative sharpness is measured between at least two colors on at least one region of the digital image, and at least one function is activated depending on the measured relative sharpness.

Abstract: The invention concerns a method for activating a function by using a measurement taken from at least one digital image (10) having at least two colours (195, 196) and originating from an image-capturing apparatus, the method including measuring the relative sharpness (190) between at least two colours in at least one region R of the image, and Controlling at least one action (191) depending on the measured relative sharpness.

Abstract: A method for enhancing quality of service concerning at least one multimedia data, in particular concerning photographs, and/or video, and/or audio, and/or text, involving least one processing of the data. The method includes determining, beforehand or in real time, based on the factor, a first fraction of the multimedia data to be processed in the mobile telephone, a second fraction of the multimedia data to be processed in at least one remote server connected to the mobile telephone via the network, a first fraction of the processing to be carried out in the mobile telephone, and a second fraction of the processing to be carried out in at least one remote server, and performing each fraction of the processing and/or processing each fraction of the multimedia data thus determined in the mobile telephone and/or in the remote server.

Abstract: A method for enhancing quality of use of at least one service concerning at least one multimedia data, in particular concerning photographs, video, audio, and/or text. The method includes automatically implementing before and/or during and/or after acquiring the multimedia data functions of the terminal required for the service. The automatic implementation of functions of the terminal including selecting, among the functions available in the terminal, functions required for the service, automatically and/or manually setting up by the user, of at least one scenario suited to the service, the scenario including logically concatenated sequences of the selected functions. The method further, for the user, selects a specific scenario among the previously set up scenarios.

Abstract: The invention concerns a method for activating a function by using a measurement taken from at least one digital image (10) having at least two colours (195, 196) and originating from an image-capturing apparatus. According to such method: the relative sharpness is measured (190) between at least two colours in at least one region R of the image, and at least one action is controlled (191) depending on the measured relative sharpness.

Abstract: A method for production of an image recording and/or reproduction device, including an optical image recording and/or reproduction system, an image sensor and/or generator and/or a synchronization system, the image being processed for improvement by a digital image processor. According to the method, parameters of the optical system and/or the sensor and/or the image generator and/or the synchronization system are determined or selected using the capacity of the digital image processor. The production costs are thus minimized and/or the performance of the image recording and/or reproduction device is optimized.

Abstract: A method and system for detecting an object in a zone located proximate to an interface between two liquid and/or gaseous media having different refractive indices, for example of the air/water type. The method and system produce at least a video image of the interface and the zone and produces electric signals representing each video image. Then, the electric signals are digitized and the data is processed by discriminating the data corresponding to the video image of the real object from those corresponding to the apparent video image generated by the interface.

Abstract: A method for detecting new objects in a scene illuminated by lights not necessarily constrained. The method detects and produces, in particular with a video camera, in the form of electric signals, video images, at successive times, digitizes the resulting electric signals, and produces image digital data, in particular pixels, at successive times. Then, the image digitalis stored and the type of object, the trajectory, and attitude changes of the object are estimated.

Abstract: The invention relates to a method for detecting an object (1) in relation to a surface (2). A synthetic image (3c, 4c) is produced from at least two distinct viewpoints (3, 4), for each of said viewpoints, by means of a geometrical transformation comprising at least one perspective projection (3a, 4a) of the object on the surface (2), each synthetic image being associated with the viewpoint concerned. By discriminating between the synthetic images, it is possible to detect the presence of and determine the position of the object (1) in relation to the surface (2), by searching for contrast inversions. The invention can be used for surveying a swimming pool.

Abstract: The invention concerns a method for detecting new objects (1) in a scene (3) illuminated by lights not necessarily constrained.

Abstract: A method and system for detecting an object in a zone located proximate to an interface between two liquid and/or gaseous media having different refractive indices, for example of the air/water type. The method and system produce at least a video image of the interface and the zone and produces electric signals representing each video image. Then, the electric signals are digitized and the data is processed by discriminating the data corresponding to the video image of the real object from those corresponding to the apparent video image generated by the interface.

Abstract: The invention concerns a warning system to help preventing drowning accidents. The system comprises at least a sonar (1). Each sonar (1) comprises at least a transmission antenna and a reception antenna having transmission (4) and reception (5) apertures. The sonar (1) is a parametric sonar with high spatial directive gain along said transmission (4) and/or reception (5) apertures. The angular opening of the transmission (17) and/or reception (18) lobes of said transmission and/or reception antennae is of the order of one degree or less than one degree. The system comprises a processing calculator. The sonar (1) comprises amplifier means and transmission means for amplifying and transmitting the electric signals coming from said reception antenna.

Abstract: The invention relates to a method for detecting an object (1) in relation to a surface (2). A synthetic image (3c, 4c) is produced from at least two distinct viewpoints (3, 4), for each of said viewpoints, by means of a geometrical transformation comprising at least one perspective projection (3a, 4a) of the object on the surface (2), each synthetic image being associated with the viewpoint concerned. By discriminating between the synthetic images, it is possible to detect the presence of and determine the position of the object (1) in relation to the surface (2), by searching for contrast inversions. The invention can be used for surveying a swimming pool.

Abstract: A system for monitoring a swimming pool to prevent drowning accidents includes sensing devices (D1, D2, D3) for providing electrical signals forming images of bodies immersed in the pool water. Appropriate hardware (10) digitizes the resulting images, and the digital image data is compressed and stored at a series of times. Digitized images of a single body are compared at a series of times. The nature of a body, the path of the body and changes in the position of the body are estimated on the basis of the series of images; and an alarm is activated should the path or movement of the body being observed give cause for concern.