专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5654771A Video compression system using a dense motion vector field and a triangular patch mesh overlay model 失效
标题翻译：视频压缩系统使用密集运动矢量场和三角形补片网格叠加模型
公开(公告)号：US5654771A
公开(公告)日：1997-08-05
申请号：US447418
申请日：1995-05-23
申请人： A. Murat Tekalp , Yucel Altunbasak , Gozde Bozdagi
发明人： A. Murat Tekalp , Yucel Altunbasak , Gozde Bozdagi
IPC分类号： G06T9/00 , H04N7/26 , H04N7/32
CPC分类号： H04N19/54
摘要： In a temporal sequence of digitized image frames of video signals, the spatial and temporal image gradients and the pixel-to-pixel motion vectors (dense motion vectors) are obtained between two consecutive image frames. A shape-adaptive triangular patch mesh model overlay is provided on the first image frame such that the location of node points of each patch is determined by the spatial image gradients of the first frame and the pixel-to-pixel motion vectors. A priority ranking of patches is established before determining the node point motion vectors. The node point motion vectors, representing the motion of each of the node points of the triangular mesh patches, are estimated by a linear least-squares solution to an affine transformation of the mesh overlay on the first frame into the second frame. Failure regions are identified and are revised in accordance with a data bit budget. All data are coded prior to transmission at a constant data bit rate by a sending unit to a receiving unit over a data link.
摘要翻译：在视频信号的数字化图像帧的时间序列中，在两个连续的图像帧之间获得空间和时间图像梯度以及像素到像素运动矢量（密集运动矢量）。在第一图像帧上提供形状自适应三角形补片网格模型覆盖，使得每个贴片的节点的位置由第一帧和像素到像素运动矢量的空间图像梯度确定。在确定节点点运动向量之前建立补丁的优先级排序。表示三角形网格斑块中每个节点的运动的节点点运动矢量通过线性最小二乘解决方案估计为在第一帧上的网格覆盖的仿射变换到第二帧。故障区域被识别并根据数据位预算进行修改。在通过数据链路通过发送单元以接收单元以恒定数据比特率传输之前，所有数据被编码。

2. 发明授权

US5907626A Method for object tracking and mosaicing in an image sequence using a two-dimensional mesh 失效
标题翻译：使用二维网格的图像序列中对象跟踪和拼接的方法
公开(公告)号：US5907626A
公开(公告)日：1999-05-25
申请号：US904875
申请日：1997-08-01
申请人： Candemir Toklu , A. Tanju Erdem , A. Murat Tekalp
发明人： Candemir Toklu , A. Tanju Erdem , A. Murat Tekalp
IPC分类号： G06T3/40 , G06T7/20 , G06K9/00
CPC分类号： G06K9/32 , G06T3/4038 , G06T7/2033 , G06K2009/2045
摘要： A method for motion tracking and constructing a mosaic of video objects is disclosed. Also disclosed is a method for synthetic object transfiguration from a mosaic. A 2-D triangular mesh is employed to represent a video object, which permits to describe the motion of the object by the displacements of the node points of the mesh, and to describe any intensity variations by the contrast and brightness parameters estimated for each node point. Using the temporal history of the node point locations, the nodes of the 2-D mesh are continued to be tracked even when they become invisible because of self-occlusion or occlusion by another object. By adding new nodes or updating the 2-D triangular mesh, any uncovered parts of the video object are incrementally added to the mosaic. A finite number of views representing the constructed mosaic are selected and used for synthetic transfiguration of a replacement object in place of the original one.
摘要翻译：公开了一种用于运动跟踪和构建视频对象的马赛克的方法。还公开了一种用于从马赛克变形的合成物体的方法。采用2-D三角形网格来表示视频对象，其允许通过网格的节点的位移描述对象的运动，并且描述通过针对每个节点估计的对比度和亮度参数的任何强度变化点。使用节点点位置的时间历史，即使它们由于另一个对象的自遮挡或遮挡而变得不可见，继续跟踪2-D网格的节点。通过添加新节点或更新二维三角形网格，视频对象的任何未覆盖的部分都会逐渐添加到马赛克中。选择表示构造的马赛克的有限数量的视图，并用于代替替换对象的合成变形。

3. 发明授权

US06665423B1 Method and system for object-oriented motion-based video description 失效
标题翻译：基于面向运动的视频描述方法与系统
公开(公告)号：US06665423B1
公开(公告)日：2003-12-16
申请号：US09492635
申请日：2000-01-27
申请人： Rajiv Mehrotra , A. Murat Tekalp
发明人： Rajiv Mehrotra , A. Murat Tekalp
IPC分类号： G06K946
CPC分类号： H04N19/25 , H04N19/543
摘要： An object-oriented method for describing the content of a video sequence comprises the steps of (a) establishing a temporal object-based segment for an object of interest; (b) describing the temporal object-based segment by describing one or more semantic motions of the object within its temporal object-based segment; and (c) describing the temporal object-based segment by describing one or more semantic interactions of the object with one or more other objects within its temporal object-based segment. The semantic motions of the object may be further described in terms of the properties of elementary coherent motions within the semantic motion. Additionally, the semantic interactions of the object may be further described in terms of the properties of the elementary spatio-temporal relationships among the interacting objects.
摘要翻译：用于描述视频序列的内容的面向对象的方法包括以下步骤：（a）为感兴趣的对象建立基于时间的对象的片段; （b）通过描述在其基于时间的对象的段内的对象的一个或多个语义运动来描述基于时间的对象的段; 以及（c）通过描述所述对象与其时间基于对象的段内的一个或多个其他对象的一个或多个语义交互来描述所述基于时间的对象的段。可以根据语义运动内的基本相干运动的属性来进一步描述对象的语义运动。此外，可以根据交互对象之间的基本空间 - 时间关系的属性来进一步描述对象的语义交互。

4. 发明授权

US06339618B1 Mesh node motion coding to enable object based functionalities within a motion compensated transform video coder 有权
标题翻译：网格节点运动编码，使运动补偿变换视频编码器内的基于对象的功能得以实现
公开(公告)号：US06339618B1
公开(公告)日：2002-01-15
申请号：US09584176
申请日：2000-05-31
申请人： Atul Puri , A. Murat Tekalp , Petrus J. L. van Beck
发明人： Atul Puri , A. Murat Tekalp , Petrus J. L. van Beck
IPC分类号： H04N736
CPC分类号： H04N19/29 , H04N19/537 , H04N19/54
摘要： A method and apparatus for coding video data permits coding of video information with optional, enhanced functionalities. Video data is coded as base layer data and enhancement layer data. The base layer data includes convention motion compensated transform encoded texture and motion vector data. Optional enhancement layer data contains mesh node vector data. Mesh node vector data of the enhancement layer may be predicted based on motion vectors of the base layer. Thus, simple decoders may decode the base layer data and obtain a basic representation of the coded video data. However, more powerful decoders may decode both the base layer and enhanced layer to obtain decoded video permitting functionalities. An embodiment of the present invention provides a back channel that permits a decoder to affect how mesh node coding is performed in the encoder. The decoder may command the encoder to reduce or eliminate encoding of mesh node motion vectors. The back channel finds application in single layer systems and two layer systems.
摘要翻译：用于对视频数据进行编码的方法和装置允许用可选的，增强的功能编码视频信息。视频数据被编码为基本层数据和增强层数据。基层数据包括惯例运动补偿变换编码纹理和运动矢量数据。可选的增强层数据包含网格节点向量数据。可以基于基本层的运动向量预测增强层的网格节点向量数据。因此，简单的解码器可以解码基本层数据并获得编码的视频数据的基本表示。然而，更强大的解码器可以解码基本层和增强层，以获得解码的视频允许功能。本发明的实施例提供了允许解码器影响在编码器中如何执行网格节点编码的反向信道。解码器可以命令编码器减少或消除网格节点运动矢量的编码。后向通道在单层系统和两层系统中发现应用。

5. 发明授权

US6148026A Mesh node coding to enable object based functionalities within a motion compensated transform video coder 失效
标题翻译：网格节点编码以在运动补偿变换视频编码器内实现基于对象的功能
公开(公告)号：US6148026A
公开(公告)日：2000-11-14
申请号：US998855
申请日：1997-12-29
申请人： Atul Puri , A. Murat Tekalp , Petrus J. L. van Beek
发明人： Atul Puri , A. Murat Tekalp , Petrus J. L. van Beek
IPC分类号： G06T9/00 , H04N7/26 , H04N7/36
CPC分类号： H04N19/29 , H04N19/537 , H04N19/54
摘要： A method and apparatus for coding video data permits coding of video information with optional, enhanced functionalities. Video data is coded as base layer data and enhancement layer data. The base layer data includes convention motion compensated transform encoded texture and motion vector data. Optional enhancement layer data contains mesh node vector data. Mesh node vector data of the enhancement layer may be predicted based on motion vectors of the base layer. Thus, simple decoders may decode the base layer data and obtain a basic representation of the coded video data. However, more powerful decoders may decode both the base layer and enhanced layer to obtain decoded video permitting functionalities. An embodiment of the present invention provides a back channel that permits a decoder to affect how mesh node coding is performed in the encoder. The decoder may command the encoder to reduce or eliminate encoding of mesh node motion vectors. The back channel finds application in single layer systems and two layer systems.
摘要翻译：用于对视频数据进行编码的方法和装置允许用可选的，增强的功能编码视频信息。视频数据被编码为基本层数据和增强层数据。基层数据包括惯例运动补偿变换编码纹理和运动矢量数据。可选的增强层数据包含网格节点向量数据。可以基于基本层的运动向量预测增强层的网格节点向量数据。因此，简单的解码器可以解码基本层数据并获得编码的视频数据的基本表示。然而，更强大的解码器可以解码基本层和增强层，以获得解码的视频允许功能。本发明的实施例提供了允许解码器影响在编码器中如何执行网格节点编码的反向信道。解码器可以命令编码器减少或消除网格节点运动矢量的编码。后向通道在单层系统和两层系统中发现应用。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式