Abstract: The present disclosure relates to a new method to make a 3D acquisition of the video scene and to replace an object of the video scene by a substitute object corresponding to the product having substantially common 3D features than the object to be replaced and acceptable criteria values. It permits to minimize the appearance of hidden surfaces or occlusions.

Abstract: The present disclosure relates to a new method to make a 3D acquisition of the video scene and to replace an object of the video scene by a substitute object corresponding to the product having substantially common 3D features than the object to be replaced and acceptable criteria values. It permits to minimize the appearance of hidden surfaces or occlusions.

Abstract: The invention relates to a display device using the DLP (Digital Light Processing) technology. This invention is in the field of digital cinema and content protection, where camcorder acquisition followed by immediate illegal distribution creates important revenue losses for content owners. According to the invention, the addressing of the display device is modified in order to introduce an anti-copy processing. The display device comprises modulation means for modulating the color or brightness of video data of video pictures received at a first rate and for outputting at a second rate modulated video data, said second rate being a multiple of the first rate, subfield coding means for coding said modulated video data into subfield data, said subfield data being delivered at the second rate, and addressing means for addressing the array with said subfield data at a third rate. Advantageously, the third rate is not a multiple of the first rate.

Abstract: To capture an image, the image sensing period of this image is subdivided into a plurality of successive illumination periods, and the value which is assigned to each pixel to capture the image is the sum of the integrals of intensity of illumination of this pixel over each of said successive illumination periods. According to the invention, this sum is weighted by an apodization function in order to emulate a mechanical shutter. Temporal aliasing issues and temporal ringing artifacts of digital imaging are prevented or at least limited.

Abstract: The present invention relates to the domain of control devices for virtual games, and more specifically to a control device to control the displacement of a virtual player and of a virtual ball in the scope of a football video game. According to the invention, the control device is in the form of a ball connected to a pedestal. This ball is equipped with accelerometers able to detect a displacement force on the ball as a result of a strike exerted on said ball, pressure sensors able to detect a pressure force exerted on the surface of the ball and a processing module. The processor module generates using information from the accelerometers and pressure sensors control signals to control the displacement of the virtual ball in the video game and control signals to control the displacement of the virtual player in the video game.

Abstract: A Braille display system and a method for operating a refreshable Braille display 14 is provided. A string of characters is assigned to a drive signal for specifying the activation or deactivation of a tuple of dots which are raised through holes in a touch and sense surface of the Braille display 14 upon activation and which are retracted upon deactivation. The Braille display 14 is driven by a drive signal which is configured to activate and/or to deactivate the tuple of dots so as to generate a dynamic tactile display of said string of characters. The time dependent characteristic of activation and/or deactivation of the tuple of dots is defined by the string of characters.

Abstract: The spatial frequency analysis contained in the compressed image is used not only for decompression of images but also for the selection of an appropriate gamut mapping algorithm. Computation resources are then saved because no specific spatial frequency analysis is required for the selection of an appropriate gamut mapping algorithm.

Abstract: The invention relates to a method for processing video images comprising the steps for acquiring a plurality of video images during a time interval comprising a reference time t; associating a weighting factor with each of the video images, at least two of the video images having different weighting factors; memorising the video images; weighting each of the video images memorised with the associated weighting factor; generating an image called the reference image associated with the reference time t by averaging weighted video images. According to the invention, each video image is memorised with a resolution proportional to the weighting factor associated with said video image in order to reduce the memory space necessary for the storage of images and reduce the access time to the memorised images.

Abstract: Method in which a component image associated with a primary color of green hue is processed in a suitable manner to reduce the spatial frequencies corresponding to the transition zones in this component image and in which a plurality of component images including the processed component image are successively displayed. Thanks to the invention, the color break-up defects are noticeably reduced. The invention applies especially to anti-piracy image display methods.

Abstract: The invention relates to a method for processing video images comprising the steps for acquiring a plurality of video images during a time interval comprising a reference time t; associating a weighting factor with each of the video images, at least two of the video images having different weighting factors; memorising the video images; weighting each of the video images memorised with the associated weighting factor; generating an image called the reference image associated with the reference time t by averaging weighted video images. According to the invention, each video image is memorised with a resolution proportional to the weighting factor associated with said video image in order to reduce the memory space necessary for the storage of images and reduce the access time to the memorised images.

Abstract: A projector has at least four primary color components controlled to produce a metameric effect image which is not perceptible to the human optical system and is perceptible to a video recording device.

Abstract: The invention relates to a method of processing source images which is intended to combat their copying by a camcorder or a camera during their display, for example in a cinema hall. The source image sequence represents a scene. According to the invention, the method comprises the following steps: detection, in the said scene, of at least one zone corresponding to an object of the scene, selection of the entirety of the pixels of the said at least one zone in at least one source image of the sequence; and processing of the said at least one source image to modify the color of the selected pixels or the spectral composition of the light emitted by the selected pixels so that the perceived color of the selected pixels is unchanged in the processed source image with respect to the source image.

Abstract: The present invention relates to a processing device of a sequence of video images intended to be displayed by a digital cinema projection system, a projection system for the digital cinema and a video signal designed to be used by such a system. The use of an anti-camcorder method against copying films is generally carried out entirely in the digital cinema projection system. However, this method requires complex video processing and costly means in the projection system. According to the invention, it is proposed to carry out part of the video processing at the level of the post-production of the video sequence and to save the result of this “pre-processing” in the form of metadata. The remaining part of the video processing is carried out from this metadata in the video projection system.

Abstract: The present invention relates to the domain of control devices for virtual games, and more specifically to a control device to control the displacement of a virtual player and of a virtual ball in the scope of a football video game. According to the invention, the control device is in the form of a ball connected to a pedestal. This ball is equipped with accelerometers able to detect a displacement force on the ball as a result of a strike exerted on said ball, pressure sensors able to detect a pressure force exerted on the surface of the ball and a processing module. The processor module generates using information from the accelerometers and pressure sensors control signals to control the displacement of the virtual ball in the video game and control signals to control the displacement of the virtual player in the video game.

Abstract: The image is broken down into a breakdown color space. For each broken down source pixel, if a source point PS0j is used to represent the end of the color source vector OPS0j associated with said source pixel, component points P1j, P2j, . . . , Pkj, . . . , Pnj are used to represent the ends of the color component vectors OP1j, OP2j, . . . , OPkj, . . . , OPnj associated with the component pixels, if a limit sphere of radius LS0j is defined, centered on the point PS0j, then said breakdown is such that the following applies: PS0Pj1, PS0Pj2, PS0Pjk, . . . , PS0Pjn?KS0j×LS0j, with KS0j?0.5. The effectiveness of the scrambling is then significantly enhanced.

Abstract: The invention relates to a projection system for displaying at least one visual image based on three primary colors, comprising a signal processing unit for converting said visual image into at least a visual image based on four primary colors, a frequency band being associated to each color primary, first display means for displaying three first primary colors of said visual image on a screen and second display means for displaying at least the fourth primary color of said visual image on said screen. According to the invention, the system further comprises optical filtering means that are adapted to enhance the separation between the frequency spectrum of the first three primary colors of the first display means and the frequency spectrum of the at least fourth primary color of the second display means. Application to anti-camcorder systems.

Abstract: The distances representative of the edge orientation at a current points of a video picture generated are particularly used for the deinterlacing or format conversion of video pictures. It can be implemented in a video coder or decoder. According to the invention, the distances representative of the edge orientation calculated are filtered with a conditional median filter applied to a window of p by q distances. This filter only takes into account the distances of points for which the local gradient module of the video components is greater than a threshold.

Abstract: Method in which a component image associated with a primary colour of green hue is processed in a suitable manner to reduce the spatial frequencies corresponding to the transition zones in this component image and in which a plurality of component images including the processed component image are successively displayed. Thanks to the invention, the colour break-up defects are noticeably reduced. The invention applies especially to anti-piracy image display methods.

Abstract: The present invention is in the field of Content protection, most particularly in cinema venues where camcorder acquisition followed by immediate illegal distribution creates important revenue losses for content owners. It is known that anti-camcorder systems using a color modulation can be circumvented by using low shutter speed in the camcorder. Today, the shutter speed is determined automatically by the camcorder as a function of the filmed video source. In automatic configurations, shutter speed self-adapts to either motion, or flicker detection, both of which taking into account brightness variations only. The proposed invention proposes a dual color/brightness modulation to defeat automatic shutter speed adjustment. For example, a color modulation at 50/60 Hz is carried out and a brightness modulation at a higher frequency 100/120 Hz is added to force the camcorder to work at a high shutter speed.

Abstract: The invention relates to a method for combating the copying of source pictures by means of a camera while they are being displayed, for example using a camcorder in a movie theatre. To this end, it is known, in classical projection systems, to modulate by a carrier wave the brightness of some pixels of the pictures. The frequency of the carrier wave is usually constant and generally half the refresh frequency. The main problem with such systems is that once a pirate has figured out what the modulation frequency is, he can configure his camcorder shutter to filter out this frequency and bypass the anti-camcorder method. According to the invention, the frequency of the carrier is changed at least once throughout the displaying of the sequence pictures or the movie, to defeat all camcorders standards (PAL/NTSC) and shutter configurations.