Method and device for watermarking an image
    1.
    发明授权
    Method and device for watermarking an image 失效
    用于水印图像的方法和设备

    公开(公告)号:US07729505B2

    公开(公告)日:2010-06-01

    申请号:US10578337

    申请日:2004-10-26

    IPC分类号: G06K9/00 G06K9/36

    CPC分类号: G06T1/0028 G06T2201/0052

    摘要: The invention concerns a method of inserting a watermark in an image comprising at least three components, the method comprises the steps of decomposing at least one component of the image into detail sub-bands in various directions and comprising coefficients, each coefficient being characterized by its position in the detail sub-band to which it belongs and its amplitude, of determining, for each position, information representing local amplitude variations from the amplitudes of the coefficients at this position in the various detail sub-bands and the coefficients close to this position in the various detail sub-bands, of determining a watermarking strength at each position from the information representing determined local amplitude variations in the said position and inserting a watermark composed of a plurality of binary information in the image, inserting each item of binary information at a position on the image according to the watermarking strength determined for a position corresponding to the position at which the binary information is inserted.

    摘要翻译: 本发明涉及一种在包括至少三个分量的图像中插入水印的方法,该方法包括以下步骤:将图像的至少一个分量分解成各个方向的细节子带,并且包括系数,每个系数的特征在于其 对于每个位置,确定表示本地振幅变化的信息在各个细节子带中的该位置处的系数的幅度和接近该位置的系数中的位置 在各个细节子带中,从表示所述位置中确定的局部振幅变化的信息中确定每个位置处的水印强度,并将由多个二进制信息组成的水印插入到图像中,将每个二进制信息项插入到 根据针对位置c确定的水印强度的图像上的位置 或对应于插入二进制信息的位置。

    Motion estimator for coding and decoding image sequences
    4.
    发明授权
    Motion estimator for coding and decoding image sequences 失效
    用于编码和解码图像序列的运动估计器

    公开(公告)号:US07502413B2

    公开(公告)日:2009-03-10

    申请号:US10332684

    申请日:2001-07-03

    IPC分类号: H04N7/12 G06K9/36

    CPC分类号: H04N19/543 G06T7/246

    摘要: The invention relates to motion estimation and compensation between two given images represented by a polygonal mesh. It provides a solution to the problems of crowding and uncovering of mesh units when the mesh is shifted. More specifically, the invention relates to a method for the encoding of a mesh that represents an image of a moving sequence. According to the invention, such a mesh is larger in size than the image.

    摘要翻译: 本发明涉及由多边形网格表示的两个给定图像之间的运动估计和补偿。 它提供了网格移位时网格单元拥挤和展开的问题的解决方案。 更具体地,本发明涉及一种用于编码表示移动序列的图像的网格的方法。 根据本发明,这种网格的尺寸大于图像。

    Method for estimating the motion between two digital images with management of mesh overturning and corresponding coding method
    5.
    发明授权
    Method for estimating the motion between two digital images with management of mesh overturning and corresponding coding method 失效
    通过网络翻转管理和相应的编码方法估算两个数字图像之间运动的方法

    公开(公告)号:US06963605B2

    公开(公告)日:2005-11-08

    申请号:US10149330

    申请日:2000-12-07

    IPC分类号: G06T9/00 H04N7/26 H04B1/66

    CPC分类号: H04N19/186 H04N19/54

    摘要: The invention relates to a method for estimating the motion between two digital images and to the use of this method for coding images. The aim of the method is to eliminate the disturbances caused by the mesh being overturned during the motion estimation process. According to the invention, the method consists of carrying out a first motion estimation in order to identify the faulty mesh, i.e. the mesh that is overturning or is overlapping after the displacement vectors have been applied; then carrying out a second motion estimation, excluding at least said faulty mesh, in order to minimize prediction error on the remaining mesh of the model.

    摘要翻译: 本发明涉及一种用于估计两个数字图像之间的运动的方法以及使用该方法编码图像的方法。 该方法的目的是消除在运动估计过程中网格被翻转引起的干扰。 根据本发明,该方法包括执行第一运动估计,以便识别故障网格,即在施加位移矢量之后翻转或重叠的网格; 然后执行第二运动估计,排除至少所述有缺陷的网格,以便最小化模型的剩余网格上的预测误差。

    Method of estimating motion in sequences of moving images using deformable meshes, video coder and decoder implementing the method
    7.
    发明授权
    Method of estimating motion in sequences of moving images using deformable meshes, video coder and decoder implementing the method 失效
    使用可变形网格,视频编码器和解码器实现该方法的运动图像序列估计运动的方法

    公开(公告)号:US08761250B2

    公开(公告)日:2014-06-24

    申请号:US11662756

    申请日:2005-09-06

    IPC分类号: H04N11/02

    摘要: The invention concerns a method which consists in analyzing a field of motion of images, estimated by using a first mesh, to detect a faulty area in the first mesh, and in locating a rupture line in said area; then generating a second mesh including a faultless part consisting of meshes of the first mesh outside the faulty area and two sub-meshes which overlap in a region including the rupture line. Each of the two sub-meshes includes respective meshes delimited by nodes including nodes shared with the faultless part, located at the boundary of the faulty area, and additional nodes not belonging to the faultless part, the rupture line being located between the respective nodes of the two sub-meshes shared with the faultless part. Said second mesh is used to finally estimate the field of motion in the group of images concerned.

    摘要翻译: 本发明涉及一种方法,该方法包括:通过使用第一网格估计的图像的运动场,以检测第一网格中的故障区域,以及在所述区域中定位断裂线; 然后生成包括由故障区域外的第一网格的网格构成的无缺陷部分和在包括断裂线的区域中重叠的两个子网格的第二网格。 两个子网格中的每一个包括由包括位于故障区域的边界处的无故障部分共享的节点和不属于无故障部分的附加节点的节点分隔的各个网格,断裂线位于 两个子网与无故障部分共享。 所述第二网格用于最终估计相关图像组中的运动场。

    Methods and devices for encoding and decoding images using nested meshes, programme, signal and corresponding uses
    8.
    发明授权
    Methods and devices for encoding and decoding images using nested meshes, programme, signal and corresponding uses 失效
    使用嵌套网格,程序,信号和相应用途对图像进行编码和解码的方法和设备

    公开(公告)号:US07346219B2

    公开(公告)日:2008-03-18

    申请号:US10479904

    申请日:2002-06-06

    IPC分类号: G06K9/36

    CPC分类号: G06T9/001 G06T17/20 H04N19/54

    摘要: The invention concerns a method for encoding at least a source image using a hierarchical mesh defining at least two nested spaces corresponding each to a decomposition level of said meshing, which consists, at least at a decomposition level n (except the first decomposition level), in delivering only image coefficients expressed in a base of functions defined in a space orthogonal to the space corresponding to the preceding decomposition level n−1, said functions being selected so that said image coefficients enable to optimize for said decomposition level n the data already transmitted for the preceding decomposition level n−1, so as to produce a reconstructed image, representing said source image, with optimized restoration quality for said decomposition level n.

    摘要翻译: 本发明涉及一种用于使用定义至少两个对应于所述网格划分的分解级别的至少两个嵌套空间的分层网格来编码至少源图像的方法,其至少包括在分解级别n(除了第一分解级别)之外, 在仅传送在与在与先前分解级别n-1相对应的空间正交的空间中定义的函数的基础中表示的图像系数时,选择所述函数,使得所述图像系数能够对已经传输的数据的所述分解级别n进行优化 对于前述分解级别n-1,以产生表示所述源图像的重构图像,具有用于所述分解级别n的优化恢复质量。

    Image-watermarking method and device
    9.
    发明申请
    Image-watermarking method and device 失效
    图像水印方法和装置

    公开(公告)号:US20070140523A1

    公开(公告)日:2007-06-21

    申请号:US10578337

    申请日:2004-10-26

    IPC分类号: G06K9/00

    CPC分类号: G06T1/0028 G06T2201/0052

    摘要: The invention concerns a method of inserting a watermark in an image comprising at least three components, the method comprises the steps of decomposing at least one component of the image into detail sub-bands in various directions and comprising coefficients, each coefficient being characterized by its position in the detail sub-band to which it belongs and its amplitude, of determining, for each position, information representing local amplitude variations from the amplitudes of the coefficients at this position in the various detail sub-bands and the coefficients close to this position in the various detail sub-bands, of determining a watermarking strength at each position from the information representing determined local amplitude variations in the said position and inserting a watermark composed of a plurality of binary information in the image, inserting each item of binary information at a position on the image according to the watermarking strength determined for a position corresponding to the position at which the binary information is inserted.

    摘要翻译: 本发明涉及一种在包括至少三个分量的图像中插入水印的方法,该方法包括以下步骤:将图像的至少一个分量分解成各个方向的细节子带,并且包括系数,每个系数的特征在于其 对于每个位置,确定表示本地振幅变化的信息在各个细节子带中的该位置处的系数的幅度和接近该位置的系数中的位置 在各个细节子带中,从表示所述位置中确定的局部振幅变化的信息中确定每个位置处的水印强度,并将由多个二进制信息组成的水印插入到图像中,将每个二进制信息项插入到 根据针对位置c确定的水印强度的图像上的位置 或对应于插入二进制信息的位置。

    Refinement of a triangular mesh representing a three-dimensional object
    10.
    发明授权
    Refinement of a triangular mesh representing a three-dimensional object 有权
    改进表示三维物体的三角形网格

    公开(公告)号:US07138999B2

    公开(公告)日:2006-11-21

    申请号:US10312207

    申请日:2001-06-21

    IPC分类号: G06T15/00

    CPC分类号: G06T17/20

    摘要: The invention concerns the refinement of a triangular mesh representing a three-dimensional object (3D), said mesh consisting of an arrangement of vertices and triangular surfaces, each defined by three references to the vertices which it links, and having three edges each linking two of said vertices. The invention is characterized in that said method comprises a step which consists in selecting at least a region of interest, said mesh refinement being carried out locally on at least one region of interest.

    摘要翻译: 本发明涉及表示三维物体(3D)的三角形网格的细化,所述网格由顶点和三角形表面的排列组成,每个顶点和三角形表面由三个对其连接的顶点的引用定义,并且具有三个边缘,每个连接两个 的所述顶点。 本发明的特征在于,所述方法包括一个步骤,该步骤包括至少选择一个感兴趣区域,所述网格细化在至少一个感兴趣区域上局部进行。