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61. 发明申请

US20050206723A1 Method for enhancing contours in an image 审中-公开
标题翻译：增强图像轮廓的方法
公开(公告)号：US20050206723A1
公开(公告)日：2005-09-22
申请号：US11081199
申请日：2005-03-16
申请人： Laurent Blonde , Didier Doyen , Luis Montalvo
发明人： Laurent Blonde , Didier Doyen , Luis Montalvo
IPC分类号： H04N5/14 , H04N5/208 , A61B1/04
CPC分类号： H04N5/142 , H04N5/208
摘要： The present invention relates to a method for enhancing the contours in a video image. It applies more particularly to cathode-ray tube digital televisions. The method of the invention consists in detecting the contours of the images, in oversampling the image signal to be provided to the tube, in increasing the video level of at least one of the samples of the pixels corresponding to a contour while preserving the luminous energy of each of the pixels, then in converting the modified signal into an analogue signal intended for the cathode-ray tube. The contours then appear finer and more visible on the screen of the television. Preferably, the modification of the sampled signal consists in reducing the number of samples of the pixel corresponding to a contour and in redistributing the video level of the samples removed to the other samples of the pixel of the contour.
摘要翻译：本发明涉及一种用于增强视频图像中的轮廓的方法。更适用于阴极射线管数字电视。本发明的方法在于检测图像的轮廓，在对要提供给管的图像信号进行过采样时，在增加对应于轮廓的像素的至少一个样本的视频电平的同时保持光能，然后将修改的信号转换成用于阴极射线管的模拟信号。然后，轮廓在电视机的屏幕上显得更细，更可见。优选地，采样信号的修改在于减少对应于轮廓的像素的样本数量，并且将所移除的样本的视频电平重新分配到轮廓的像素的其他样本。

62. 发明授权

US6124887A Specal effects camera and system including such a camera 失效
标题翻译：特殊效果相机和系统包括这样的相机
公开(公告)号：US6124887A
公开(公告)日：2000-09-26
申请号：US855956
申请日：1997-05-14
申请人： Eric Auffret , Laurent Bizos , Laurent Blonde
发明人： Eric Auffret , Laurent Bizos , Laurent Blonde
IPC分类号： H04N5/225 , H04N5/272 , H04N9/04 , H04N9/09 , H04N9/74 , H04N9/75
CPC分类号： H04N9/75 , H04N5/272
摘要： The present invention relates to a camera (1) for generating a cut key signal (K) for a subject moving in front of a background on the basis of invisible frequencies originating from the said background. The camera comprises an optical separator (3), a detector (7) and a processing circuit (9). The optical separator (3) makes it possible to separate the beam, representing the subject and the background, into four separate beams, including three colour beams (FR, FV, FB) and a fourth beam consisting of the invisible frequencies originating from the background. The detector (7) makes it possible to convert the energy contained in the fourth beam to an electrical signal (PIR), and the processing circuit (9) makes it possible to generate the key signal (k) from the electrical signal originating from the detection of the invisible frequency beam. The invention applies to the cutting of subjects moving in front of coloured backgrounds so as to place these subjects in front of new coloured backgrounds.
摘要翻译：本发明涉及一种摄像机（1），用于基于源自所述背景的不可见频率，产生用于在背景前移动的对象的切割键信号（K）。相机包括光分离器（3），检测器（7）和处理电路（9）。光学分离器（3）使得可以将表示被摄体和背景的光束分成四个单独的光束，包括三色光束（FR，FV，FB）和由源自背景的不可见的频率组成的第四光束。检测器（7）使得能够将包含在第四光束中的能量转换为电信号（PIR），并且处理电路（9）使得可以根据源自该信号的电信号检测不可见的频率波束。本发明适用于在彩色背景前移动的被摄物体的切割，以将这些物体置于新的有色背景之前。

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