Patent application number | Description | Published |
20090003650 | Method for selecting image pixels to watermark and watermarking method using this selection - This invention relates to a method to select, in an input image, pixels that can be watermarked by replacing their colour by a metameric colour. It comprises the following steps:
| 01-01-2009 |
20090058875 | Digital Light Processing Display 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 colour 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. | 03-05-2009 |
20090161018 | Video picture display method to reduce the effects of blurring and double contours and device implementing this method - The present invention relates to a video picture display method that aims to reduce the effects of blurring and multiple contours when the picture display frequency is doubled. According to the invention, for each source video picture, a video level dissymmetry is created between the two pictures from the source video picture after doubling the frequency in the areas in motion of the source video picture. | 06-25-2009 |
20090251613 | Method for detecting scene change in a video picture sequence - The method comprises the following steps:
| 10-08-2009 |
20090316784 | Device for generating an interpolated frame - The present invention is situated within the frame or video processing domain and more particularly in the domain of video interpolation. It relates to a device for generating an interpolated frame from source frames temporarily surrounding it. This device comprises motion estimation means, motion compensated interpolation means, linear interpolation means, means for mixing the frame produced by the motion compensated interpolation means with the frame produced by the linear interpolation means. According to the invention, the mixing coefficients assigned to these two frames depend on the displaced frame difference and/or the frame difference between the source frames surrounding this interpolated frame and/or estimated motion vectors. | 12-24-2009 |
20100027968 | Method and device for processing source pictures to generate aliasing - The invention concerns a method for processing a sequence of source pictures to generate artifacts due to aliasing when these source pictures are captured by a video capturing device. This method comprises a first time modulation step for modulating temporally at a first modulation frequency the brightness of pixels of each picture of the sequence around a brightness to be displayed for said picture. According to an important feature of the invention, the method further comprises a second time modulation step for modulating temporally at a second modulation frequency different from the first modulation frequency the brightness of pixels of each picture of the sequence around a brightness value to be displayed for said picture, the first and second modulation frequencies being determined in order not to be visible to the human eye and contributing to generate aliasing artifact at a predetermined aliasing frequency. | 02-04-2010 |
20100053431 | METHOD AND DEVICE FOR PROCESSING A SEQUENCE OF SOURCE PICTURES - 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. | 03-04-2010 |
20100098288 | Method of processing images to combat copying - 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:
| 04-22-2010 |
20100104260 | VIDEO RECORDING PREVENTION SYSTEM - 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. | 04-29-2010 |
20130155393 | METHOD AND DEVICE FOR ESTIMATING THE OPTICAL POWER OF CORRECTIVE LENSES IN A PAIR OF EYEGLASSES WORN BY A SPECTATOR - This invention relates to a method for estimating the optical power of corrective lenses in a pair a eyeglasses worn by a spectator, characterized in that it comprises the following steps:
| 06-20-2013 |
20130242191 | DEVICE AND METHOD FOR SYNCHRONIZING DIFFERENT PARTS OF A DIGITAL SERVICE - The invention relates to a reproduction device ( | 09-19-2013 |
20140085435 | AUTOMATIC CONVERSION OF A STEREOSCOPIC IMAGE IN ORDER TO ALLOW A SIMULTANEOUS STEREOSCOPIC AND MONOSCOPIC DISPLAY OF SAID IMAGE - The invention concerns a device and a method for generating on a defined display screen of determined size a 3D image including a left view and a right view from an incoming video signal to be viewed at a distance by a viewer. The device comprises:
| 03-27-2014 |
20140341525 | DEVICE AND METHOD FOR SYNCHRONIZING DIFFERENT PARTS OF A DIGITAL SERVICE - The invention relates to a reproduction device ( | 11-20-2014 |
20140354772 | PROCESSING DEVICE FOR THE GENERATION OF 3D CONTENT VERSIONS AND ASSOCIATED DEVICE FOR OBTAINING CONTENT - A device is intended to process three-dimensional content for a server. The three-dimensional content comprises at least two image sequences obtained from different angles, wherein a three-dimensional rendering is associated to a level of disparity between said at least two image sequences. This processing device is configured to generate from a content at least two different content versions corresponding to different levels of disparity adapted to different transmission bit rates, wherein the disparity level decreases with said transmission bit rate. A server comprising the processing device, a three-dimensional content-obtaining device, and a content receiver comprising three-dimensional content-obtaining device are further disclosed. | 12-04-2014 |
20150054743 | DISPLAY METHOD THROUGH A HEAD MOUNTED DEVICE - In one embodiment, it is proposed a method for validating a control operation to be performed by a target device through a virtual control interface, the virtual control interface being displayed by a head mounted device of a user. The method is remarkable in that it comprises:
| 02-26-2015 |
20150071525 | PROCESSING 3D IMAGE SEQUENCES - Various implementations provide techniques to prevent excessive parallax, depth, or disparity from being passed through to a viewer. In one particular implementation, it is determined that a depth indicator for an object in a stereoscopic image pair of a video sequence is outside of a target range. One or more images of the stereoscopic image pair is modified so that the depth indicator for the object is within the target range. In other implementations, a depth transition between the object and another portion of the video sequence is smoothed. In further implementations, the stereoscopic image pair is replaced with a 2D image pair that includes the object. In yet further implementations, a resulting video sequence includes (i) one or more stereoscopic image pairs having non-zero disparity and for which the depth indicator is within the target range for the entire image pair, and (ii) one or more 2D image pairs. | 03-12-2015 |
20150085087 | METHOD AND DEVICE FOR CORRECTING DISTORTION ERRORS DUE TO ACCOMMODATION EFFECT IN STEREOSCOPIC DISPLAY - The invention concerns a method and a device for correcting distortion errors in a 3D content viewed by an observer on a screen. The method comprises the step of determining a rendered roundness factor (ITO of a pinhole model projected cylinder, estimating a rendered roundness factor table depending on the defined distance of the observer to the screen and the disparity values of objects of the image, determining for the observer a disparity transform function (TD) as a function of the estimated rendered roundness factor table and modifying the object disparity values using the disparity transform so that a perceived roundness factor of one is provided. | 03-26-2015 |