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：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：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：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：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：US08094286B2

公开(公告)日：2012-01-10

申请号：US12312968

申请日：2007-12-04

申请人： Pascal Bourdon ,  Sylvain Thiebaud ,  Didier Doyen

发明人： Pascal Bourdon ,  Sylvain Thiebaud ,  Didier Doyen

IPC分类号： H03L7/00

CPC分类号： H04N5/913 ,  H04N2005/91392

摘要： 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.

摘要翻译： 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。

公开(公告)号：US09237276B2

公开(公告)日：2016-01-12

申请号：US12998982

申请日：2009-12-21

申请人： Pascal Bourdon ,  Jonathan Kervec ,  Didier Doyen

发明人： Pascal Bourdon ,  Jonathan Kervec ,  Didier Doyen

IPC分类号： H04N5/243 ,  H04N5/355 ,  H04N5/357

CPC分类号： H04N5/243 ,  H04N5/2357 ,  H04N5/2621 ,  H04N5/35536 ,  H04N5/357

摘要： To capture an image, the image sensing period of this image is subdivided into a plurality of successive illumination periods, and the value which is assigned to each pixel to capture the image is the sum of the integrals of intensity of illumination of this pixel over each of said successive illumination periods. According to the invention, this sum is weighted by an apodization function in order to emulate a mechanical shutter. Temporal aliasing issues and temporal ringing artifacts of digital imaging are prevented or at least limited.

摘要翻译： 为了捕获图像，该图像的图像感测周期被细分为多个连续的照明周期，并且分配给每个像素以捕获图像的值是每个像素上的该像素的照明强度的积分之和 的所述连续照明周期。 根据本发明，为了模拟机械快门，该总和由切趾功能加权。 数字成像的时间混叠问题和时间振荡伪影被阻止或至少受到限制。

公开(公告)号：US08045755B2

公开(公告)日：2011-10-25

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 ,  G09G5/02

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：US20100053431A1

公开(公告)日：2010-03-04

申请号：US12312968

申请日：2007-12-04

申请人： Pascal Bourdon ,  Sylvain Thiebaud ,  Didier Doyen

发明人： Pascal Bourdon ,  Sylvain Thiebaud ,  Didier Doyen

IPC分类号： H03L7/00

CPC分类号： H04N5/913 ,  H04N2005/91392

摘要： 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.

摘要翻译： 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。

公开(公告)号：US09253458B2

公开(公告)日：2016-02-02

申请号：US12225599

申请日：2007-03-29

申请人： Didier Doyen ,  Pascal Bourdon ,  Thierry Borel

发明人： Didier Doyen ,  Pascal Bourdon ,  Thierry Borel

IPC分类号： G09G5/02 ,  H04N9/31 ,  H04N5/913

CPC分类号： H04N9/3197 ,  H04N5/913 ,  H04N9/3123 ,  H04N2005/91392

摘要： 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 color 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.

摘要翻译： 本发明涉及使用DLP（数字光处理）技术的显示装置。 本发明处于数字电影和内容保护领域，其中摄录机获取之后立即被非法分发，为内容所有者带来重要的收入损失。 根据本发明，修改显示装置的寻址以引入防复制处理。 显示装置包括调制装置，用于调制以第一速率接收的视频图像的视频数据的颜色或亮度，并以第二速率输出调制视频数据，所述第二速率是第一速率的倍数，用于编码的子字段编码装置 将所述调制的视频数据转换成子场数据，所述子场数据以第二速率传送，以及寻址装置，用于以第三速率用所述子场数据寻址阵列。 有利地，第三速率不是第一速率的倍数。