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    • 4. 发明授权
    • 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
    • US07933017B2
    • 2011-04-26
    • US11717921
    • 2007-03-13
    • Laurent BlondéSylvain ThiebaudJulien Thollot
    • Laurent BlondéSylvain ThiebaudJulien Thollot
    • G01J3/50
    • G01J3/46G01J3/462G09G5/02G09G2320/0693
    • A method for characterizing a color reproduction device. A first output color measure responding to a first reference input color value is measured under normal measurement conditions. The measurement conditions are modified and a second output color measure responding to the first reference input color value is measured under the modified measurement conditions. A transformation rule, enabling transformation between the second output color measure and the first output color measure, is calculated from the first color value and the second color value. A first set of output color measures responding to a set of input color values is measured under modified measurement conditions, and the first set of output color measures is converted, using the transformation rule, to a second set of output color 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。
    • 5. 发明授权
    • Method for processing a video sequence and apparatus implementing said method
    • 用于处理视频序列的方法和实现所述方法的装置
    • US08130258B2
    • 2012-03-06
    • US11711517
    • 2007-02-27
    • Pascal BourdonLaurent BlondéPhilippe Le Roy
    • Pascal BourdonLaurent BlondéPhilippe Le Roy
    • G06F15/173
    • H04N5/913H04N2005/91392
    • 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.
    • 本发明在内容保护领域,特别是在摄像机获取之后立即被非法分发的电影场所,对于内容所有者来说,对于收入损失是重要的。 众所周知,使用彩色调制的防摄录机系统可以通过在摄像机中使用低快门速度来避开。 今天,快照速度由摄像机自动确定为拍摄视频源的功能。 在自动配置中,快门速度自适应运动或闪烁检测,这两者都仅考虑亮度变化。 所提出的发明提出了一种双色/亮度调制来打败自动快门速度调节。 例如,执行50/60Hz的色调,并且增加更高频率100/120Hz的亮度调制以迫使摄像机以高快门速度工作。
    • 8. 发明授权
    • Image display device and method
    • 图像显示装置及方法
    • US07702129B2
    • 2010-04-20
    • US11449317
    • 2006-06-08
    • Jonathan KervecLaurent BlondéDidier Doyen
    • Jonathan KervecLaurent BlondéDidier Doyen
    • G06K9/00
    • H04N5/913H04N9/31H04N2005/91392
    • The present invention relates to a device and a method for displaying images. To combat the copying of images by a camcorder in a cinema auditorium, modulating the luminance of the pixels of a pattern around the value to be displayed to a high frequency which makes the pattern invisible to the human eye but which generates artifacts on the sequence filmed by the camcorder is known. According to the invention, it is proposed to temporally modulate the pattern only in the fixed areas (background or indoor scenes) or, where appropriate, the areas with weak movements. Thus, rather than degrading the image in the areas with movement by applying to them the temporal modulation processing, a decision is taken not to temporally modulate the pattern in these critical areas.
    • 本发明涉及一种用于显示图像的装置和方法。 为了对抗摄像机在电影礼堂中复制图像,将要显示的值周围的图案的像素的亮度调制到高频,这使得图案对人眼不可见,但是在拍摄的顺序上产生伪影 由摄像机知道。 根据本发明,提出仅在固定区域(背景或室内场景)或适当的情况下对运动较弱的区域进行时间调制模式。 因此,不是通过向他们施加时间调制处理来降低具有移动的区域中的图像,而是决定不在时间上调制这些关键区域中的图案。