公开(公告)号：US6084912A

公开(公告)日：2000-07-04

申请号：US884666

申请日：1997-06-27

申请人： Glenn Reitmeier ,  Ya-Qin Zhang

发明人： Glenn Reitmeier ,  Ya-Qin Zhang

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/28 ,  H04N7/36 ,  H04N7/18

CPC分类号： H04N19/94 ,  H04N19/17 ,  H04N19/1883 ,  H04N19/503 ,  H04N19/61 ,  H04N19/63 ,  H04N19/647 ,  H04N19/115 ,  H04N19/146

摘要： A method and apparatus for coding motion video (images) that produces very low bit rate video representation and minimizes the amount of data needed to be transferred to the decoder. The apparatus comprises a 2-pass segmentation section, a 2-stage motion estimation/compensation section that optionally employs Affine Motion Compensation (AMC), a wavelet transform section, a Zero-Tree Wavelet Quantization (ZTQ) section, a code book, a comparator, a reconstruction section, a coder, a frame memory and an entropy coder.

摘要翻译： 用于编码产生非常低比特率视频表示的运动视频（图像）的方法和装置，并且使需要传送到解码器的数据量最小化。 该装置包括2通道分割部分，2阶段运动估计/补偿部分，其可选地采用仿射运动补偿（AMC），小波变换部分，零树小波量化（ZTQ）部分，码本， 比较器，重建部分，编码器，帧存储器和熵编码器。

公开(公告)号：US5521988A

公开(公告)日：1996-05-28

申请号：US223206

申请日：1994-04-05

申请人： Weiping Li ,  Ya-Qin Zhang

发明人： Weiping Li ,  Ya-Qin Zhang

IPC分类号： H04N7/26 ,  G06T9/00 ,  H03M7/30 ,  H04N1/41 ,  G06K9/36

CPC分类号： G06T9/008

摘要： In a vector transform coding (VTC) scheme for image and video compression, a multi-layered codebook structure and a dynamic bit-allocation scheme in the vector transform domain are employed. The main advantage of this technique is that distortion is controlled by dynamically allocating more bits to vectors causing larger distortions and less bits to vectors causing smaller distortions.

摘要翻译： 在用于图像和视频压缩的矢量变换编码（VTC）方案中，采用矢量变换域中的多层码本结构和动态比特分配方案。 该技术的主要优点是通过动态地分配更多的比特来控制失真，所述向量导致较大的失真，并且对于引起较小失真的向量的位数较少。

公开(公告)号：US07826537B2

公开(公告)日：2010-11-02

申请号：US10977773

申请日：2004-10-29

申请人： Ya-Qin Zhang ,  Shipeng Li ,  Feng Wu ,  Rong Yan

发明人： Ya-Qin Zhang ,  Shipeng Li ,  Feng Wu ,  Rong Yan

IPC分类号： H04N7/18

CPC分类号： H04N19/29 ,  H04N19/34 ,  H04N19/68 ,  H04N19/89

摘要： A scalable layered video coding scheme that encodes video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video, adds error resilience to the enhancement layer. Unique resynchronization marks are inserted into the enhancement layer bitstream in headers associated with each video packet, headers associated with each bit plane, and headers associated with each video-of-plane (VOP) segment. Following transmission of the enhancement layer bitstream, the decoder tries to detect errors in the packets. Upon detection, the decoder seeks forward in the bitstream for the next known resynchronization mark. Once this mark is found, the decoder is able to begin decoding the next video packet. With the addition of many resynchronization marks within each frame, the decoder can recover very quickly and with minimal data loss in the event of a packet loss or channel error in the received enhancement layer bitstream. The video coding scheme also facilitates redundant encoding of header information from the higher-level VOP header down into lower level bit plane headers and video packet headers. Header extension codes are added to the bit plane and video packet headers to identify whether the redundant data is included.

公开(公告)号：US07684493B2

公开(公告)日：2010-03-23

申请号：US10945011

申请日：2004-09-20

申请人： Ya-Qin Zhang ,  Shipeng Li ,  Feng Wu ,  Rong Yan

发明人： Ya-Qin Zhang ,  Shipeng Li ,  Feng Wu ,  Rong Yan

IPC分类号： H04N7/18

CPC分类号： H04N19/29 ,  H04N19/34 ,  H04N19/68 ,  H04N19/89

摘要： A scalable layered video coding scheme that encodes video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video, adds error resilience to the enhancement layer. Unique resynchronization marks are inserted into the enhancement layer bitstream in headers associated with each video packet, headers associated with each bit plane, and headers associated with each video-of-plane (VOP) segment. Following transmission of the enhancement layer bitstream, the decoder tries to detect errors in the packets. Upon detection, the decoder seeks forward in the bitstream for the next known resynchronization mark. Once this mark is found, the decoder is able to begin decoding the next video packet. With the addition of many resynchronization marks within each frame, the decoder can recover very quickly and with minimal data loss in the event of a packet loss or channel error in the received enhancement layer bitstream. The video coding scheme also facilitates redundant encoding of header information from the higher-level VOP header down into lower level bit plane headers and video packet headers. Header extension codes are added to the bit plane and video packet headers to identify whether the redundant data is included.

公开(公告)号：US07680190B2

公开(公告)日：2010-03-16

申请号：US10984467

申请日：2004-11-09

申请人： Jizheng Xu ,  Shipeng Li ,  Ya-Qin Zhang

发明人： Jizheng Xu ,  Shipeng Li ,  Ya-Qin Zhang

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04B1/66

CPC分类号： H04N19/615 ,  H04N19/13 ,  H04N19/147 ,  H04N19/19 ,  H04N19/61 ,  H04N19/62 ,  H04N19/63 ,  H04N19/647

摘要： A video encoding system and method utilizes a three-dimensional (3-D) wavelet transform and entropy coding that utilize motion information in a way to reduce the sensitivity to motion. In one implementation, the coding process initially estimates motion trajectories of pixels in a video object from frame to frame in a video sequence to account for motion of the video object throughout the frames. After motion estimation, a 3-D wavelet transform is applied in two parts. First, a temporal 1-D wavelet transform is applied to the corresponding pixels along the motion trajectories in a time direction. The temporal wavelet transform produces decomposed frames of temporal wavelet transforms, where the spatial correlation within each frame is well preserved. Second, a spatial 2-D wavelet transform is applied to all frames containing the temporal wavelet coefficients. The wavelet transforms produce coefficients within different sub-bands. The process then codes wavelet coefficients. In particular, the coefficients are assigned various contexts based on the significance of neighboring samples in previous, current, and next frame, thereby taking advantage of any motion information between frames. The wavelet coefficients are coded independently for each sub-band to permit easy separation at a decoder, making resolution scalability and temporal scalability natural and easy. During the coding, bits are allocated among sub-bands according to a technique that optimizes rate-distortion characteristics.

摘要翻译： 视频编码系统和方法利用利用运动信息的三维（3-D）小波变换和熵编码来降低对运动的敏感度。 在一个实施方案中，编码过程最初估计视频序列中的视频对象中的像素的运动轨迹，以考虑视频对象在整个帧中的运动。 运动估计后，三维小波变换分为两部分。 首先，沿时间方向沿着运动轨迹将时间1-D小波变换应用于相应的像素。 时间小波变换产生时间小波变换的分解帧，其中每帧内的空间相关性保持良好。 其次，将空间二维小波变换应用于包含时间小波系数的所有帧。 小波变换产生不同子带内的系数。 然后，该过程编码小波系数。 特别地，根据前一帧，当前帧和下一帧中相邻采样的重要性，将系数分配给各种上下文，从而利用帧之间的任何运动信息。 对于每个子带，小波系数被独立地编码，以便在解码器处容易地分离，使得分辨率可扩展性和时间可扩展性自然而简单。 在编码期间，根据优化速率失真特性的技术，在子带中分配比特。

公开(公告)号：US07640502B2

公开(公告)日：2009-12-29

申请号：US10957037

申请日：2004-10-01

申请人： Ying-Qing Xu ,  Heung-Yeung Shum ,  Ya-Qin Zhang ,  Barn-Wan Li ,  Bo Liu

发明人： Ying-Qing Xu ,  Heung-Yeung Shum ,  Ya-Qin Zhang ,  Barn-Wan Li ,  Bo Liu

IPC分类号： G06F3/00 ,  G06F3/048

CPC分类号： G06F3/1423 ,  G06F3/0481 ,  G06F3/04842 ,  G06F2203/04803 ,  G06Q10/10

摘要： Multiple schemes and techniques for facilitating presentations with an interactive application are described. For example, an interactive application provides a console view overlay for integrating multiple productivity applications into a graphical user interface (GUI) window. An interactive application can also share a selected display portion of the console view overlay with other interactive applications. As another example, presenters and other audience members can draw on the selected display portion being shared, and the drawn graphics are synchronously displayed by the other interactive applications. Interactive applications, as directed by their users, can join various member groups and specific presentations thereof. Moreover, a user may share content in accordance with membership grouping.

摘要翻译： 描述了用于促进与交互应用的呈现的多种方案和技术。 例如，交互式应用程序提供了一个控制台视图覆盖，用于将多个生产力应用程序集成到图形用户界面（GUI）窗口中。 交互式应用程序还可以与其他交互式应用程序共享控制台视图覆盖的选定显示部分。 作为另一示例，演示者和其他观众成员可以在所选择的显示部分上进行共享，并且绘制的图形被其他交互式应用程序同步显示。 按照用户的指示，交互式应用程序可以加入各种成员组及其具体演示。 此外，用户可以根据会员分组来共享内容。

公开(公告)号：US07574726B2

公开(公告)日：2009-08-11

申请号：US11277260

申请日：2006-03-23

申请人： Qian Zhang ,  Ya-Qin Zhang ,  Wenwu Zhu

发明人： Qian Zhang ,  Ya-Qin Zhang ,  Wenwu Zhu

IPC分类号： H04L12/00 ,  H04N7/12 ,  H04J1/16 ,  G08C15/00 ,  H04N7/173

CPC分类号： H04L47/822 ,  H04L47/15 ,  H04L47/193 ,  H04L47/2416 ,  H04L47/263 ,  H04L47/28 ,  H04L47/70 ,  H04L47/762 ,  H04L47/801 ,  H04N7/173 ,  H04N21/234318 ,  H04N21/234354 ,  H04N21/2381 ,  H04N21/2402 ,  H04N21/2662 ,  H04N21/4381 ,  H04N21/44209 ,  H04N21/64322 ,  H04N21/6582

摘要： A resource allocation of multiple compressed AV streams delivered over the Internet is disclosed that achieves end-to-end optimal quality through a multimedia streaming TCP-friendly transport (MSTFP) protocol that adaptively estimates the network bandwidth while smoothing the sending rate. Resources allocated dynamically according to a media encoding distortion and network degradation algorithm. A scheme is also disclosed for dynamically estimating the available network bandwidth for streaming of objects, such as MPEG4 multiple video objects, in conjunction with the MSTFP protocol. The scheme can account for packet-loss rates to minimize end-to-end distortion for media delivery.

公开(公告)号：US07269289B2

公开(公告)日：2007-09-11

申请号：US11120244

申请日：2005-05-02

申请人： Feng Wu ,  Shipeng Li ,  Ya-Qin Zhang

发明人： Feng Wu ,  Shipeng Li ,  Ya-Qin Zhang

IPC分类号： G06K9/36

CPC分类号： H04N19/36 ,  H04N19/105 ,  H04N19/157 ,  H04N19/169 ,  H04N19/34 ,  H04N19/503 ,  H04N19/51 ,  H04N19/895

摘要： A video encoding scheme employs progressive fine-granularity layered coding to encode video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video. Some of the enhancement layers in a current frame are predicted from at least one lower quality layer in a reference frame, whereby the lower quality layer is not necessarily the base layer.

摘要翻译： 视频编码方案采用逐行细粒度分层编码将视频数据帧编码为多层，包括具有较低质量视频的基本层和越来越高质量视频的多个增强层。 当前帧中的一些增强层从参考帧中的至少一个较低质量层预测，由此较低质量层不一定是基本层。

公开(公告)号：US20070055790A1

公开(公告)日：2007-03-08

申请号：US11218871

申请日：2005-09-02

申请人： Richard Yao ,  Steve Elliott ,  Ya-Qin Zhang

发明人： Richard Yao ,  Steve Elliott ,  Ya-Qin Zhang

IPC分类号： G06F15/16

CPC分类号： H04L67/06 ,  H04L67/1097 ,  H04W28/14 ,  H04W80/00

摘要： A portable ultra wideband device wirelessly connects to personal computers and other computing or consumer devices with an ultra-high speed link. The ultra wideband device provides data storage and retrieval functionalities. Data or information is formatted for ultra wideband wireless transmission at a transmitting device. The data is transmitted from an ultra wideband communication interface of the transmitting device over a wireless medium to the receiving device. The data transmission is transparent to the receiving device. An ultra wideband communication interface on the receiving device processes the data according to an ultra wideband protocol. The original data is parsed from the file and translated into its original format which is supported by an application on the receiving device. The original data is used to execute a read/write action on a storage device of the receiving device such that the translated data is automatically available to the receiving device.

摘要翻译： 便携式超宽带设备通过超高速链路无线连接到个人计算机和其他计算或消费设备。 超宽带设备提供数据存储和检索功能。 数据或信息被格式化为在发射设备处的超宽带无线传输。 数据通过无线介质从发送设备的超宽带通信接口发送到接收设备。 数据传输对接收设备是透明的。 接收设备上的超宽带通信接口根据超宽带协议处理数据。 原始数据从文件中解析并转换为原始格式，该格式由接收设备上的应用程序支持。 原始数据用于在接收设备的存储设备上执行读/写操作，使得翻译的数据对于接收设备自动可用。

公开(公告)号：US07130473B2

公开(公告)日：2006-10-31

申请号：US11120249

申请日：2005-05-02

申请人： Feng Wu ,  Shipeng Li ,  Ya-Qin Zhang

发明人： Feng Wu ,  Shipeng Li ,  Ya-Qin Zhang

IPC分类号： G06K9/36

CPC分类号： H04N19/36 ,  H04N19/105 ,  H04N19/157 ,  H04N19/169 ,  H04N19/34 ,  H04N19/503 ,  H04N19/51 ,  H04N19/895

摘要： A video encoding scheme employs progressive fine-granularity layered coding to encode video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video. Some of the enhancement layers in a current frame are predicted from at least one lower quality layer in a reference frame, whereby the lower quality layer is not necessarily the base layer.