公开(公告)号：US08259128B2

公开(公告)日：2012-09-04

申请号：US12086814

申请日：2006-12-19

申请人： Laurent Blondé ,  Pascal Bourdon ,  Patrick Morvan

发明人： Laurent Blondé ,  Pascal Bourdon ,  Patrick Morvan

IPC分类号： G09G5/02 ,  G09G5/00

CPC分类号： H04N5/913 ,  G06T1/0028 ,  G06T1/0085 ,  G06T2201/0052 ,  H04N9/3179 ,  H04N21/478 ,  H04N2005/91357 ,  H04N2005/91392

摘要： The image is broken down into a breakdown color space. For each broken down source pixel, if a source point PS0j is used to represent the end of the color source vector OPS0j associated with said source pixel, component points P1j, P2j, . . . , Pkj, . . . , Pnj are used to represent the ends of the color component vectors OP1j, OP2j, . . . , OPkj, . . . , OPnj associated with the component pixels, if a limit sphere of radius LS0j is defined, centered on the point PS0j, then said breakdown is such that the following applies: PS0Pj1, PS0Pj2, PS0Pjk, . . . , PS0Pjn≧KS0j×LS0j, with KS0j≧0.5. The effectiveness of the scrambling is then significantly enhanced.

摘要翻译： 图像被分解成分解色彩空间。 对于每个分解源像素，如果源点PS0j被用于表示与所述源像素相关联的颜色源矢量OPS0j的结束，则分量点P1j，P2j，...。 。 。 ，Pkj，。 。 。 ，Pnj用于表示颜色分量向量OP1j，OP2j，...的端点。 。 。 ，OPkj，。 。 。 ，与分量像素相关联的OPnj，如果定义半径LS0j的极限球体，以点PS0j为中心，则所述击穿使得以下适用：PS0Pj1，PS0Pj2，PS0Pjk，...。 。 。 ，PS0Pjn≥KS0j×LS0j，KS0j≥0.5。 然后，加扰的有效性显着增强。

公开(公告)号：US08696135B2

公开(公告)日：2014-04-15

申请号：US12452308

申请日：2008-02-19

申请人： Youngshik Yoon ,  Pascal Bourdon ,  Laurent Blondé ,  Didier Doyen

发明人： Youngshik Yoon ,  Pascal Bourdon ,  Laurent Blondé ,  Didier Doyen

IPC分类号： G03B21/00

CPC分类号： H04N5/913 ,  G02B27/1026 ,  G02B27/146 ,  G03B21/26 ,  G03B33/08 ,  H04N2005/91392

摘要： 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.

摘要翻译： 投影仪具有被控制的至少四个主要颜色成分以产生对于人类光学系统是不可察觉的并且视频记录装置可感知的同色异质效应图像。

公开(公告)号：US08130258B2

公开(公告)日：2012-03-06

申请号：US11711517

申请日：2007-02-27

申请人： Pascal Bourdon ,  Laurent Blondé ,  Philippe Le Roy

发明人： Pascal Bourdon ,  Laurent Blondé ,  Philippe Le Roy

IPC分类号： G06F15/173

CPC分类号： H04N5/913 ,  H04N2005/91392

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20100104260A1

公开(公告)日：2010-04-29

申请号：US12452308

申请日：2008-02-19

申请人： Youngshik Yoon ,  Pascal Bourdon ,  Laurent Blondé ,  Didier Doyen

发明人： Youngshik Yoon ,  Pascal Bourdon ,  Laurent Blondé ,  Didier Doyen

IPC分类号： H04N5/91

CPC分类号： H04N5/913 ,  G02B27/1026 ,  G02B27/146 ,  G03B21/26 ,  G03B33/08 ,  H04N2005/91392

摘要： 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.

摘要翻译： 投影仪具有被控制的至少四个主要颜色成分以产生对于人类光学系统是不可察觉的并且视频记录装置可感知的同色异质效应图像。

公开(公告)号：US20090184978A1

公开(公告)日：2009-07-23

申请号：US12086814

申请日：2006-12-19

申请人： Laurent Blonde ,  Pascal Bourdon ,  Patrick Morvan

发明人： Laurent Blonde ,  Pascal Bourdon ,  Patrick Morvan

IPC分类号： G09G5/00

CPC分类号： H04N5/913 ,  G06T1/0028 ,  G06T1/0085 ,  G06T2201/0052 ,  H04N9/3179 ,  H04N21/478 ,  H04N2005/91357 ,  H04N2005/91392

摘要： The image is broken down into a breakdown color space. For each broken down source pixel, if a source point PS0j is used to represent the end of the color source vector OPS0j associated with said source pixel, component points P1j, P2j, . . . , Pkj, . . ., Pnj are used to represent the ends of the color component vectors OP1j, OP2j, . . . ,OPkj, OPnj associated with the component pixels , if a limit sphere of radius LS0j is defined, centered on the point PS0j, then said breakdown is such that the following applies: PS0Pj1, PS0Pj2, PS0Pjk, . . . , PS0Pjn≧KS0j×LS0j, with KS0j≧0.5. The effectiveness of the scrambling is then significantly enhanced.

摘要翻译： 图像被分解成分解色彩空间。 对于每个分解源像素，如果源点PS0j被用于表示与所述源像素相关联的颜色源矢量OPS0j的结束，则分量点P1j，P2j，...。 。 。 ，Pkj，。 。 Pnj用于表示颜色分量向量OP1j，OP2j，...的端点。 。 。 ，OPkj，OPnj与分量像素相关联，如果半径LS0j的极限球被定义为以点PS0j为中心，则所述击穿使得以下适用：PS0Pj1，PS0Pj2，PS0Pjk。 。 。 ，PS0Pjn> = KS0jxLS0j，KS0j> = 0.5。 然后，加扰的有效性显着增强。

公开(公告)号：US08172402B2

公开(公告)日：2012-05-08

申请号：US12449934

申请日：2008-02-20

申请人： Jean-Ronan Vigouroux ,  Pascal Bourdon ,  Didier Doyen ,  Jean-Jacques Sacre ,  Patrick Morvan ,  Sylvain Thiebaud

发明人： Jean-Ronan Vigouroux ,  Pascal Bourdon ,  Didier Doyen ,  Jean-Jacques Sacre ,  Patrick Morvan ,  Sylvain Thiebaud

IPC分类号： G03B21/00 ,  G03B21/26 ,  H04N9/69 ,  H04N5/72 ,  G09G5/02 ,  G09G3/00 ,  G06F3/038

CPC分类号： H04N5/913 ,  H04N2005/9135 ,  H04N2005/91392

摘要： 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.

摘要翻译： 本发明涉及一种用于基于三原色显示至少一个视觉图像的投影系统，包括用于将所述视觉图像转换成至少基于四个原色的视觉图像的信号处理单元，与每个颜色相关联的频带 主要的第一显示装置，用于在屏幕上显示所述视觉图像的三个第一基色;以及第二显示装置，用于在所述屏幕上至少显示所述视觉图像的第四基色。 根据本发明，该系统还包括光学滤波装置，其适于增强第一显示装置的第一三原色的频谱与第二显示装置的至少第四原色的频谱之间的间隔 。 应用于反摄像机系统。

公开(公告)号：US20100085491A1

公开(公告)日：2010-04-08

申请号：US12449934

申请日：2008-02-20

申请人： Jean-Ronan Vigouroux ,  Pascal Bourdon ,  Didier Doyen ,  Jean-Jacques Sacre ,  Patrick Morvan ,  Sylvain Thiebaud

发明人： Jean-Ronan Vigouroux ,  Pascal Bourdon ,  Didier Doyen ,  Jean-Jacques Sacre ,  Patrick Morvan ,  Sylvain Thiebaud

IPC分类号： H04N9/31

CPC分类号： H04N5/913 ,  H04N2005/9135 ,  H04N2005/91392

摘要： The invention relates to a projection system for displaying at least one visual image based on three primary colours, comprising a signal processing unit for converting said visual image into at least a visual image based on four primary colours, a frequency band being associated to each colour primary, first display means for displaying three first primary colours of said visual image on a screen and second display means for displaying at least the fourth primary colour 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 colours of the first display means and the frequency spectrum of the at least fourth primary colour of the second display means. Application to anti-camcorder systems.

摘要翻译： 本发明涉及一种用于基于三原色显示至少一个视觉图像的投影系统，包括用于将所述视觉图像转换成至少基于四个原色的视觉图像的信号处理单元，与每个颜色相关联的频带 主要的第一显示装置，用于在屏幕上显示所述视觉图像的三个第一基色;以及第二显示装置，用于在所述屏幕上至少显示所述视觉图像的第四基色。 根据本发明，该系统还包括光学滤波装置，其适于增强第一显示装置的第一三原色的频谱与第二显示装置的至少第四原色的频谱之间的间隔 。 应用于反摄像机系统。

公开(公告)号：US20090003650A1

公开(公告)日：2009-01-01

申请号：US12157468

申请日：2008-06-11

申请人： Jean-Ronan Vigouroux ,  Pascal Bourdon ,  Didier Doyen

发明人： Jean-Ronan Vigouroux ,  Pascal Bourdon ,  Didier Doyen

IPC分类号： G06K9/00

CPC分类号： H04N9/3182 ,  G06T1/0028 ,  G06T2201/0051 ,  H04N1/32309 ,  H04N1/54 ,  H04N5/913 ,  H04N2005/91335 ,  H04N2005/91392

摘要： 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: correct the input image by applying a predetermined gamma law, convert the input image into a ‘metameric’ image in which the colours of the input image pixels are replaced by metameric colours, simulate the capture of the input image and of the metameric image by a camcorder in order to generate respectively a captured input image and a captured metameric image, determine, in a colour space and for each pixel of the input image, the distance between the colour of said pixel in the captured input image and in the captured metameric image, and select the pixels of the input image for which the distance is greater than a threshold. The invention also concerns a watermarking method based on metamerism.

摘要翻译： 本发明涉及一种在输入图像中选择可通过用同色异色替换其颜色而被加水印的像素的方法。 它包括以下步骤：通过应用预定的伽马定律来校正输入图像，将输入图像转换成其中输入图像像素的颜色被同色异色替代的“同位体”图像，模拟输入图像的捕获， 通过摄像机分别生成同色异体图像，以分别产生捕获的输入图像和捕获的同色异体图像，在颜色空间和输入图像的每个像素中确定捕获的输入图像中的所述像素的颜色之间的距离 并且在捕获的同色异体图像中，并且选择距离大于阈值的输入图像的像素。 本发明还涉及基于同色异体的水印方法。

公开(公告)号：US20070212024A1

公开(公告)日：2007-09-13

申请号：US11711517

申请日：2007-02-27

申请人： Pascal Bourdon ,  Laurent Blonde ,  Philippe Le Roy

发明人： Pascal Bourdon ,  Laurent Blonde ,  Philippe Le Roy

IPC分类号： H04N5/91

CPC分类号： H04N5/913 ,  H04N2005/91392

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20070172057A1

公开(公告)日：2007-07-26

申请号：US11698013

申请日：2007-01-25

申请人： Pascal Bourdon ,  Laurent Blonde ,  Thierry Borel

发明人： Pascal Bourdon ,  Laurent Blonde ,  Thierry Borel

IPC分类号： H04N7/167

CPC分类号： H04N5/913 ,  H04N5/74 ,  H04N2005/91392

摘要： The invention discloses a new modulation scheme to prevent illegal copy in movie theaters. None of the existing modulation schemes make the right assumptions to modelize a camcorder device. In such classical schemes, camcorders are always considered as sampling devices without taking into account the effects of shutter speed. The shutter of the camcorder is classically compared to a low-pass filter. As a result, modulation effects can be easily removed by setting up shutter speed to low values (low cutoff frequency). The right mathematical modelization of the shutter effect shows that, in the spectral domain, the behavior of the camcorder is close to a cardinal sine function with a main lobe and sidelobes. Consequently, according to the invention, it is proposed to select a modulation frequency that not only generates visual artifacts once recorded by the camcorder under shutter-free conditions, but that can also generate artifacts despite low shutter speed settings by going through sidelobe of the shutter spectrum.

摘要翻译： 本发明公开了一种防止电影院非法复制的新调制方案。 现有的调制方案都没有制定正确的假设来建模摄像机设备。 在这种经典方案中，摄像机总是被认为是采样设备，而不考虑快门速度的影响。 摄像机的快门通常与低通滤波器相比较。 结果，通过将快门速度设置为低值（低截止频率）可以容易地消除调制效果。 快门效应的正确的数学模型化表明，在光谱域中，摄像机的行为接近具有主瓣和旁瓣的基本正弦函数。 因此，根据本发明，提出了选择不仅在无快门条件下由摄像机记录的视觉伪影的调制频率，而且还可以通过经过快门的旁瓣来生成伪影，尽管低快门速度设置 光谱。