| 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 |
