公开(公告)号：US06707854B1

公开(公告)日：2004-03-16

申请号：US09663668

申请日：2000-09-18

申请人： Michel Bonnet ,  Cécile Dufour

发明人： Michel Bonnet ,  Cécile Dufour

IPC分类号： H04B166

CPC分类号： H04N19/527 ,  H04N19/537 ,  H04N19/54

摘要： A global motion estimation method between an incoming frame F(n) of a sequence of frames and a large static image M(n−1), which is constructed from previous frames F(1), F(2), . . . , F(n−1) of the video sequence, uses a motion model based on a two-dimensional perspective transform that contains eight motion parameters. The eight motion parameters are the coordinates of the four vertices of the incoming frame. The motion estimation method enables any displacement of the four corners of the original rectangular image to fit the next one by optimizing a cost function. Useful applications include those related to MPEG-4 and, more especially, to MPEG-7 standard, such as sprite generation or mosaicing.

摘要翻译： 由前一帧F（1），F（2），...构成的帧顺序的输入帧F（n）和大静态图像M（n-1）之间的全局运动估计方法。 。 。 ，视频序列的F（n-1）使用基于包含八个运动参数的二维透视变换的运动模型。 八个运动参数是传入帧的四个顶点的坐标。 运动估计方法可以通过优化成本函数来实现原始矩形图像的四个角的任何位移，以适应下一个矩形图像。有用的应用包括与MPEG-4相关的应用，更具体地，涉及MPEG-7标准，例如子画面 一代或马赛克。

公开(公告)号：US06661914B2

公开(公告)日：2003-12-09

申请号：US09989245

申请日：2001-11-20

申请人： Cécile Dufour

发明人： Cécile Dufour

IPC分类号： G06K936

CPC分类号： G06T17/005 ,  G06T7/55

摘要： The invention relates to a new method of reconstruction of tridimensional scenes. While conventional methods are often limited to the 3D reconstruction of the bounding volume of the concerned objects, the proposed method of recovery of a 3D geometric model from 2D views taken by one single camera, giving an information even about the parts which are hidden in each view, is implemented according to a first depth labeling step, implemented in a sub-system (11) and including initialization and projection sub-steps followed by a refinement process, and to a second reconstruction step, implemented in a sub-system (12). By means of a close cooperation of the 3D depth maps thus obtained for two views of a scene, a 3D model is identified and extracted.

公开(公告)号：US08126051B2

公开(公告)日：2012-02-28

申请号：US10555262

申请日：2004-04-28

申请人： Cécile Dufour ,  Gwenaëlle Marquant ,  Stéphane Valente

发明人： Cécile Dufour ,  Gwenaëlle Marquant ,  Stéphane Valente

IPC分类号： H04N7/12

CPC分类号： H04N19/507 ,  H04N19/105 ,  H04N19/136 ,  H04N19/142 ,  H04N19/17 ,  H04N19/174 ,  H04N19/176 ,  H04N19/18 ,  H04N19/21 ,  H04N19/30 ,  H04N19/46 ,  H04N19/51 ,  H04N19/61 ,  H04N19/70

摘要： An encoding method applied to an input video sequence corresponding to successive scenes subdivided into successive video object planes (VOPs) is provided that generates, for coding all the video objects of said scenes, a coded bit stream the content of which is described in terms of separate channels and constituted of encoded video data in which each data item is described by a bitstream syntax that allows the recognition and decoding of all the elements of the content. The syntax comprises an additional syntactic information provided for describing independently the type of temporal prediction of the various channels. The additional information is a syntactic element placed at the slice level or the macroblock level in the coded bitstream, and its meaning is either specific for each present channel or shared by all existing channels.

摘要翻译： 提供了一种应用于对应于连续视频对象平面（VOP）的连续场景的输入视频序列的编码方法，其生成用于对所述场景的所有视频对象进行编码的编码比特流，其内容以 单独的通道并且由编码的视频数据构成，其中通过允许对内容的所有元素的识别和解码的比特流语法来描述每个数据项。 语法包括提供用于独立地描述各种频道的时间预测的类型的附加句法信息。 附加信息是放置在编码比特流中的切片级别或宏块级别的句法元素，并且其含义对于每个当前频道是特定的或由所有现有信道共享。

公开(公告)号：US06452515B1

公开(公告)日：2002-09-17

申请号：US09548112

申请日：2000-04-12

申请人： Laurent Duquesnois ,  Cécile Dufour ,  Lionel Bouchard ,  Ivo Jansch

发明人： Laurent Duquesnois ,  Cécile Dufour ,  Lionel Bouchard ,  Ivo Jansch

IPC分类号： H03H700

CPC分类号： A63F13/80 ,  A63F13/005

摘要： A video encoder and decoder are provided for processing a sequence of animated pictures in such a way that an interactive game, such as a puzzle for instance, may be played. Each picture of a movie sequence is divided into a predetermined number of pieces that are then randomly coded (according to the MPEG-4 standard), transmitted and/or stored, decoded and displayed. It is then possible to play with the pieces to reorder them while they are in motion (with possible associated audio), according to predefined rules and ends of scenarios. The left and right buttons of a mouse, or a similar control device, are used to displace either one piece, or a group of attached pieces respectively, in order to verify if the proposed location for a piece is free and possible (no contradiction with any other surrounding piece) and then to drop said piece on the new spot, or, on the contrary, if some contradiction is detected, send back the piece (or, respectively, the group of attached pieces) to its previous location.

摘要翻译： 提供了一种视频编码器和解码器，用于以这样的方式处理动画图像序列，使得可以播放诸如谜题的交互式游戏。 电影序列的每个图像被分成预定数量的片段，然后随机地编码（根据MPEG-4标准），发送和/或存储，解码和显示。 然后，根据预定义的规则和场景的结尾，可以播放这些片段，以便它们在运动时（可能的关联音频）重新排序。 鼠标的左右按钮或类似的控制装置被用于分别移动一个或一组附件，以便验证一件作品的建议位置是否自由和可能（与此不矛盾 任何其他周围的部分），然后将所述片段放在新的位置，或者相反，如果检测到一些矛盾，则将该片段（或分别附加的片段）发送回其之前的位置。

公开(公告)号：US06351572B1

公开(公告)日：2002-02-26

申请号：US09124629

申请日：1998-07-29

申请人： Cécile Dufour

发明人： Cécile Dufour

IPC分类号： G06K936

CPC分类号： G06T17/005 ,  G06T7/55

摘要： The invention relates to a new method of reconstruction of tridimensional scenes. While conventional methods are often limited to the 3D reconstruction of the bounding volume of the concerned objects, the proposed method of recovery of a 3D geometric model from 2D views taken by one single camera, giving an information even about the parts which are hidden in each view, is implemented according to a first depth labeling step, implemented in a sub-system (11) and including initialization and projection sub-steps followed by a refinement process, and to a second reconstruction step, implemented in a sub-system (12). By means of a close cooperation of the 3D depth maps thus obtained for two views of a scene, a 3D model is identified and extracted.

摘要翻译： 本发明涉及三维场景重建的新方法。 虽然常规方法通常限于相关对象的边界体积的3D重建，但是所提出的从一个单一摄像机采集的2D视图中恢复3D几何模型的方法，甚至提供关于每个相机中隐藏的部分的信息 视图是根据在子系统（11）中实现的包括初始化和投影子步骤以及细化过程的第一深度标记步骤实现的，以及在子系统（12）中实现的第二重建步骤 ）。 通过与场景的两个视图所获得的3D深度图的紧密协作，识别并提取3D模型。