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    • 3. 发明授权
    • Method and device for processing a sequence of source pictures
    • 用于处理源图像序列的方法和装置
    • US08094286B2
    • 2012-01-10
    • US12312968
    • 2007-12-04
    • Pascal BourdonSylvain ThiebaudDidier Doyen
    • Pascal BourdonSylvain ThiebaudDidier Doyen
    • H03L7/00
    • H04N5/913H04N2005/91392
    • 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.
    • 本发明涉及一种用于在例如使用电影院中的摄像机来显示的同时通过照相机来对源图像进行复制的方法。 为此,在经典投影系统中,通过载波调制图像的某些像素的亮度是已知的。 载波的频率通常是恒定的,通常是刷新频率的一半。 这种系统的主要问题是,一旦盗版者了解了调制频率,他就可以配置摄像机快门来滤除这个频率,并绕过反摄像机的方法。 根据本发明,在整个序列图像或电影的显示期间,载波的频率至少改变一次,以抵消所有摄像机标准(PAL / NTSC)和快门配置。
    • 6. 发明申请
    • Device, system and method for characterizing a colour device
    • 用于表征彩色设备的设备,系统和方法
    • US20090103802A1
    • 2009-04-23
    • US11717921
    • 2007-03-13
    • Laurent BlondeSylvain ThiebaudJulien Thollot
    • Laurent BlondeSylvain ThiebaudJulien Thollot
    • G06K9/00
    • G01J3/46G01J3/462G09G5/02G09G2320/0693
    • A method for characterizing a colour reproduction device. A first output colour measure responding to a first reference input colour value is measured under normal measurement conditions. The measurement conditions are modified and a second output colour measure responding to the first reference input colour value is measured under the modified measurement conditions. A transformation rule, enabling transformation between the second output colour measure and the first output colour measure, is calculated from the first colour value and the second colour value. A first set of output colour measures responding to a set of input colour values is measured under modified measurement conditions, and the first set of output colour measures is converted, using the transformation rule, to a second set of output colour measures. A system and a control device are also provided.
    • 一种用于表征颜色再现装置的方法。 在正常测量条件下测量响应于第一参考输入颜色值的第一输出颜色测量。 测量条件被修改,并且在修改的测量条件下测量响应于第一参考输入颜色值的第二输出颜色测量。 从第一颜色值和第二颜色值计算能够进行第二输出颜色测量与第一输出颜色测量之间的变换的变换规则。 在修改的测量条件下测量响应于一组输入颜色值的第一组输出颜色测量,并且使用变换规则将第一组输出颜色测量值转换为第二组输出颜色测量。 还提供了一种系统和控制装置。
    • 10. 发明申请
    • Global anticamcorder projection system and method
    • 全球反摄像机投影系统及方法
    • US20090108182A1
    • 2009-04-30
    • US12288404
    • 2008-10-20
    • Sylvain ThiebaudJean-Jacques Sacre
    • Sylvain ThiebaudJean-Jacques Sacre
    • G01N21/00
    • H04N5/913H04N2005/91392
    • Method of displaying images on a projection screen in front of a place for an audience, by using different visually-equivalent metameric colors for different portions of images, and by simultaneously illuminating said place for the audience with perturbing infrared radiations and by simultaneously detecting any image capture device in the place for the audience, wherein: the different metameric colors that are visually-equivalent have different spectral wavelength distributions at least in the red region of wavelengths, detection is performed through the perturbing infrared radiations that are reflected by any object in the place for the audience. Such a system seems impossible to circumvent by pirates using camcorders.
    • 通过对图像的不同部分使用不同的视觉上等效的同色异体颜色,并且通过同时以干扰的红外辐射照亮观众的位置并且同时检测任何图像,在用于观众的地方前面的投影屏幕上显示图像的方法 捕获设备在观众的地方,其中:至少在红色波长区域中视觉上相同的不同同色异颜色具有不同的光谱波长分布,通过扰动的红外辐射进行检测,所述干扰辐射由 地方为观众。 这样的系统似乎不可能用海盗使用摄像机规避。