Thomson Licensing

Interdigital Ce Patent Holdings

Thomson Licensing Dtv

Pascal Bourdon

Didier Doyen

Sylvain Thiebaud

Pierrick Jouet

Vincent Alleaume

Laurent Blondé

Jonathan Kervec

Jean-Ronan Vigouroux

Thierry Borel

Jean-Jacques Sacre

Laurent Blonde

Youngshik Yoon

Jurgen Stauder

Patrick Morvan

Louis Chevallier

Philippe Le Roy

Jürgen Stauder

Francois Le Clerc

Nicolas Menard

Jouet Pierrick

Pascal Alleaume

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.

Method for processing a video scene and corresponding device

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.

Digital light processing display device

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.

Method and device to capture images by emulating a mechanical shutter

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.

Device to control the movement of a virtual player and a virtual ball in a game application

A Braille display system and a method for operating a refreshable Braille displayis 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 displayupon activation and which are retracted upon deactivation. The Braille displayis 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.

Braille display system and method for operating a refreshable Braille display

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.

Method of processing of compressed image into a gamut mapped image using spatial frequency analysis

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.

Method and device for generating images comprising motion blur

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.

Method for sequentially displaying a colour image

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.

Video recording prevention system

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:

Method of processing images to combat copying

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.

Device for processing video images, video projection system and signal intended for use by the projection system

The image is broken down into a breakdown color space. For each broken down source pixel, if a source point Pis used to represent the end of the color source vector OPassociated with said source pixel, component points P, P, . . . , P, . . . , Pare used to represent the ends of the color component vectors OP, OP, . . . , OP, . . . , OPassociated with the component pixels, if a limit sphere of radius Lis defined, centered on the point P, then said breakdown is such that the following applies: PP, PP, PP, . . . , PP&#x2267;K&#xd7;L, with K&#x2267;0.5. The effectiveness of the scrambling is then significantly enhanced.

Image processing method for increasing the blurring of pirated images

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.

Projection system for displaying at least one image based on three filtered primary colours

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.

Method for generating distances representative of the edge orientations in a video picture, corresponding device and use of the method for deinterlacing or format conversion

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.

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Le Grand Fougeray, France

Pascal Bourdon