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

US06639943B1 Hybrid temporal-SNR fine granular scalability video coding 有权
标题翻译：混合时间SNR精细粒度可扩展性视频编码
公开(公告)号：US06639943B1
公开(公告)日：2003-10-28
申请号：US09590825
申请日：2000-06-09
申请人： Hayder Radha , Yingwei Chen , Mihaela Van Der Schaar
发明人： Hayder Radha , Yingwei Chen , Mihaela Van Der Schaar
IPC分类号： H04N712
CPC分类号： H04N21/654 , H04N19/115 , H04N19/164 , H04N19/172 , H04N19/187 , H04N19/31 , H04N19/34 , H04N19/577 , H04N19/61 , H04N21/6332
摘要： The present invention is directed to fine granular coding technique that includes both quality and temporal scalability. This is accomplished by utilizing a hybrid temporal/SNR scalability structure that is readily adaptable to fine granular coding techniques. In one example of this structure, temporal enhancement frames and FGS enhancement frames are included in a single enhancement layer. In another example, two distinct enhancement layers are used to achieve the hybrid temporal-SNR scalability. The two layers include a temporal scalability layer to achieve the temporal enhancement for the base-layer (i.e., better motion), while an FGS layer is used to improve the quality SNR of the base-layer and/or the temporal-scalability enhancement layer.
摘要翻译：本发明涉及包括质量和时间可伸缩性的精细粒度编码技术。这通过利用易于适应细粒度编码技术的混合时间/ SNR可伸缩性结构来实现。在该结构的一个示例中，时间增强帧和FGS增强帧被包括在单个增强层中。在另一示例中，使用两个不同的增强层来实现混合时间SNR可伸缩性。两层包括实现基层的时间增强（即更好的运动）的时间可伸缩性层，而FGS层用于提高基层和/或时间可扩展性增强层的质量SNR 。

2. 发明授权

US06263022B1 System and method for fine granular scalable video with selective quality enhancement 有权
标题翻译：具有选择性质量增强的精细粒度可缩放视频的系统和方法
公开(公告)号：US06263022B1
公开(公告)日：2001-07-17
申请号：US09347882
申请日：1999-07-06
申请人： Yingwei Chen , Hayder Radha , Mihaela van der Schaar
发明人： Yingwei Chen , Hayder Radha , Mihaela van der Schaar
IPC分类号： H04N712
CPC分类号： H04N19/34 , H04N19/126 , H04N19/29
摘要： There is disclosed an adaptive quantization controller for use in a video encoder comprising a base layer circuit for receiving an input stream of video frames and generating compressed base layer video frames suitable for transmission to a streaming video receiver and an enhancement layer circuit for receiving the input stream of video frames and a decoded version of the compressed base layer video frames and generating enhancement layer video data associated with, and allocated to, corresponding ones of the compressed base layer video frames. The adaptive quantization controller receives at least one quantization parameter from the base layer circuit and, in response thereto, determines a corresponding shifting factor for shifting a bit plane associated with the enhancement layer video data. The adaptive quantizaion controller also modifies a data field in the enhancement layer video data to cause the video streaming receiver to assign a higher decoding priority to the shifted bit plane.
摘要翻译：公开了一种在视频编码器中使用的自适应量化控制器，其包括用于接收视频帧的输入流的基本层电路，并且生成适合于传输到流式视频接收机的压缩基本层视频帧以及用于接收输入的增强层电路视频帧流和压缩基本层视频帧的解码版本，并且生成与压缩基本层视频帧相关联并分配给对应的压缩基本层视频帧的增强层视频数据。自适应量化控制器从基层电路接收至少一个量化参数，响应于此，确定用于移位与增强层视频数据相关联的比特平面的相应移位因子。自适应量化控制器还修改增强层视频数据中的数据字段，以使视频流接收机向移位的位平面分配更高的解码优先级。

3. 发明授权

US06826232B2 Fine granular scalable video with embedded DCT coding of the enhancement layer 失效
标题翻译：精细粒度可扩展视频与嵌入式DCT编码的增强层
公开(公告)号：US06826232B2
公开(公告)日：2004-11-30
申请号：US09467589
申请日：1999-12-20
申请人： Yingwei Chen , Hayder Radha , Mihaela Van Der Schaar
发明人： Yingwei Chen , Hayder Radha , Mihaela Van Der Schaar
IPC分类号： H04N718
CPC分类号： H04N19/34 , H04N19/129 , H04N19/14 , H04N19/176
摘要： The present invention is directed to a method for encoding video data in an embedded fashion in order to achieve fine granular scalable video. The method includes the video data being transformed into a plurality of DCT coefficients. Further, the DCT coefficients are arranged into sub-groups and the DCT coefficients are scanned according to the sub-groups. The DCT coefficients being scanned by the sub-groups enables a higher level of scalability to be achieved.
摘要翻译：本发明涉及一种用于以嵌入方式对视频数据进行编码的方法，以便实现细粒度可缩放视频。该方法包括将视频数据变换为多个DCT系数。此外，DCT系数被布置成子组，并且根据子组扫描DCT系数。由子组扫描的DCT系数能够实现更高级别的可扩展性。

4. 发明授权

US06501397B1 Bit-plane dependent signal compression 失效
标题翻译：位平面相关信号压缩
公开(公告)号：US06501397B1
公开(公告)日：2002-12-31
申请号：US09578286
申请日：2000-05-25
申请人： Hayder Radha , Yingwei Chen , Mihaela Van Der Schaar-Mitrea
发明人： Hayder Radha , Yingwei Chen , Mihaela Van Der Schaar-Mitrea
IPC分类号： H03M700
CPC分类号： H04N19/34 , H04N19/12 , H04N19/147 , H04N19/184 , H04N19/436 , H04N19/46
摘要： The present invention is directed to a variable coding of the bit-planes for a particular source signal. This includes first partitioning or grouping the different bit-planes into embedded sub-signals and then coding each sub-signal. This technique enables an encoder according to the present invention to control and achieve a desired trade-off point between scalability and coding-efficiency. Therefore, in cases where bit or bit-plane level granularity is not required, coding efficiency can be improved by combining two or more bit-planes prior to coding. In addition, since the statistical nature of each bit-plane is different, the level of grouping used across the bit-planes can vary.
摘要翻译：本发明涉及用于特定源信号的位平面的可变编码。这包括首先将不同的位平面划分或分组成嵌入的子信号，然后对每个子信号进行编码。这种技术使得根据本发明的编码器能够在可扩展性和编码效率之间控制和实现期望的权衡点。因此，在不需要位或位平面级粒度的情况下，可以通过在编码之前组合两个或多个位平面来提高编码效率。另外，由于每个位平面的统计特性不同，所以在平面上使用的分组水平可以变化。

5. 发明授权

US06480547B1 System and method for encoding and decoding the residual signal for fine granular scalable video 有权
标题翻译：用于对细粒度可缩放视频进行编码和解码残留信号的系统和方法
公开(公告)号：US06480547B1
公开(公告)日：2002-11-12
申请号：US09419672
申请日：1999-10-15
申请人： Yingwei Chen , Mihaela Van Der Schaar , Hayder Radha
发明人： Yingwei Chen , Mihaela Van Der Schaar , Hayder Radha
IPC分类号： H04N712
CPC分类号： H04N19/34 , H04N19/13 , H04N19/29 , H04N19/61 , H04N19/63
摘要： There is disclosed a video encoder and a video decoder. The video encoder comprises base layer circuitry for receiving an input stream of video frames and generating compressed base layer video data for transmission to a streaming video receiver. The base layer video data comprises original transform coefficients (O) associated with the input stream of video frames and reconstructed base layer transform coefficients (B) associated with the original transform coefficients. The video encoder also comprises enhancement layer circuitry for receiving the original transform coefficients (O) and the reconstructed base layer transform coefficients (B) and generating a residual signal (R) proportional to a difference between the original transform coefficients (O) and the reconstructed base layer transform coefficients (B). The enhancement layer circuitry encodes and sends to the streaming video receiver a sign of the residual signal (R) and the bit planes of the residual signal (R). The video decoder comprises base layer circuitry for receiving compressed base layer video data and determining reconstructed base layer transform coefficients (B) associated with a quantization of the base layer video data. The video decoder further comprises enhancement layer circuitry for receiving enhancement layer video data associated with the compressed base layer video data and determining a residual signal (R) and a sign associated with the residual signal (R). The enhancement layer circuitry reconstructs enhancement layer transform coefficients (E) from the residual signal (R) and the plurality of reconstructed base layer transform coefficients (B).
摘要翻译：公开了一种视频编码器和视频解码器。视频编码器包括用于接收视频帧的输入流并生成用于传输到流式视频接收机的压缩基本层视频数据的基本层电路。基层视频数据包括与视频帧的输入流相关联的原始变换系数（O）和与原始变换系数相关联的重建的基本层变换系数（B）。视频编码器还包括用于接收原始变换系数（O）和重构的基本层变换系数（B）的增强层电路，并产生与原始变换系数（O）和重建的变换系数（O）之间的差成比例的残差信号基层变换系数（B）。增强层电路对流视频接收机编码残留信号（R）的符号和残留信号（R）的位平面。视频解码器包括用于接收压缩的基本层视频数据和确定与基本层视频数据的量化相关联的重建的基本层变换系数（B）的基本层电路。视频解码器还包括增强层电路，用于接收与压缩的基本层视频数据相关联的增强层视频数据，并确定残余信号（R）和与残留信号（R）相关联的符号。增强层电路从剩余信号（R）和多个重建的基本层变换系数（B）重建增强层变换系数（E）。

6. 发明授权

US06788740B1 System and method for encoding and decoding enhancement layer data using base layer quantization data 有权
标题翻译：使用基本层量化数据对增强层数据进行编码和解码的系统和方法
公开(公告)号：US06788740B1
公开(公告)日：2004-09-07
申请号：US09411464
申请日：1999-10-01
申请人： Mihaela van der Schaar , Yingwei Chen , Hayder Radha
发明人： Mihaela van der Schaar , Yingwei Chen , Hayder Radha
IPC分类号： H04B166
CPC分类号： H04N19/34 , H04N19/13 , H04N19/29 , H04N19/61 , H04N19/63
摘要： There is disclosed a video encoder comprising a base layer encoder and an enhancement layer encoder. The base layer encoder receives an input stream of video frames and generates compressed base layer video data suitable for transmission to a streaming video receiver. The enhancement layer encoder receives the input stream of video frames and a decoded version of the compressed base layer video data and generates enhancement layer video data associated with the compressed base layer video data and suitable for transmission to the streaming video receiver. The video encoder also comprises a controller associated with the enhancement layer circuitry for receiving a quantization parameter associated with the base layer video data and determining therefrom at least one all-zero bit plane associated with at least one block of the enhancement layer video data. The controller is capable of causing the enhancement layer circuitry not to transmit the at least one all-zero bit plane to the streaming video receiver.
摘要翻译：公开了一种包括基本层编码器和增强层编码器的视频编码器。基层编码器接收视频帧的输入流，并产生适合于传输到流式视频接收机的压缩基本层视频数据。增强层编码器接收视频帧的输入流和压缩基本层视频数据的解码版本，并且生成与压缩基本层视频数据相关联并适于传输到流视频接收器的增强层视频数据。视频编码器还包括与增强层电路相关联的控制器，用于接收与基本层视频数据相关联的量化参数，并从中确定与增强层视频数据的至少一个块相关联的至少一个全零位平面。控制器能够使增强层电路不将至少一个全零位平面发送到流视频接收器。

7. 发明授权

US06501797B1 System and method for improved fine granular scalable video using base layer coding information 有权
标题翻译：使用基层编码信息改进细粒度可伸缩视频的系统和方法
公开(公告)号：US06501797B1
公开(公告)日：2002-12-31
申请号：US09347881
申请日：1999-07-06
申请人： Mihaela van der Schaar , Yingwei Chen , Hayder Radha
发明人： Mihaela van der Schaar , Yingwei Chen , Hayder Radha
IPC分类号： H04B1404
CPC分类号： H04N19/34 , H04N19/103 , H04N19/137 , H04N19/146 , H04N19/187 , H04N19/29 , H04N19/33 , H04N19/37
摘要： There is disclosed an apparatus for controlling the transmission of enhancement layer video data for use in a video encoder containing a base layer encoder and an enhancement layer encoder. The base layer encoder receives input video frames and generates compressed base layer video frames suitable for transmission at a base layer bit rate to a streaming video receiver. The enhancement layer encoder compares the input video frames and a processed version of the compressed base layer video frames and generates enhancement layer video data suitable for transmission at a modifiable enhancement layer bit rate to the streaming video receiver. The apparatus comprises a base layer parameter monitor for receiving at least one base layer parameter and, in response thereto, modifying an allocation of the enhancement layer video data among corresponding ones of the compressed base layer video frames.
摘要翻译：公开了一种用于控制在包含基本层编码器和增强层编码器的视频编码器中使用的增强层视频数据的传输的装置。基层编码器接收输入视频帧，并产生适合于以基层比特率传输的压缩基层视频帧到流视频接收机。增强层编码器比较输入视频帧和经压缩的基本层视频帧的处理版本，并生成适于以可修改的增强层比特率传输到流式视频接收机的增强层视频数据。该装置包括用于接收至少一个基本层参数的基本层参数监视器，并且响应于此，在相应的压缩基本层视频帧中修改增强层视频数据的分配。

8. 发明授权

US07042944B2 Single-loop motion-compensation fine granular scalability 有权
公开(公告)号：US07042944B2
公开(公告)日：2006-05-09
申请号：US09887756
申请日：2001-06-21
申请人： Mihaela van der Schaar , Hayder Radha
发明人： Mihaela van der Schaar , Hayder Radha
IPC分类号： H04N7/00
CPC分类号： H04N19/34 , H04N19/31 , H04N19/61
摘要： A video coding technique having motion compensation for bi-directional predicted frames (B-frames) and predicted frames (P-frames). The video coding technique involves a single-loop prediction-based base layer which includes base layer B- and/or P-frames that are generated from “extended” or “enhanced” base layer reference frames during base layer coding.

9. 发明授权

US07245663B2 Method and apparatus for improved efficiency in transmission of fine granular scalable selective enhanced images 失效
标题翻译：用于提高细粒度可缩放选择性增强图像传输效率的方法和装置
公开(公告)号：US07245663B2
公开(公告)日：2007-07-17
申请号：US09887747
申请日：2001-06-21
申请人： Mihaela Van Der Schaar , Hayder Radha
发明人： Mihaela Van Der Schaar , Hayder Radha
IPC分类号： H04N7/12
CPC分类号： H04N19/34 , H04N19/17 , H04N19/176 , H04N19/196 , H04N19/197 , H04N19/61
摘要： Improved efficiency in transmission of FGS encoded video data is achieved by reducing the transmission of overhead information items necessary to decode the received video data. After establishing an initial or first set of criteria for selectively enhancing areas within an image, each subsequent transmission frame includes an indicator that informs a receiving system to decode the current frame using the previously established criteria. The initial criteria include shift factor values specifying selectively enhanced areas of an image; position, displacement vector, size and enhancement factor for at least one area of interest with in an image; and known fixed values contained at both the transmitting and receiving systems.
摘要翻译：通过减少对接收的视频数据进行解码所需的开销信息项的传输，可以提高FGS编码视频数据的传输效率。在建立用于选择性地增强图像中的区域的初始或第一组标准之后，每个后续传输帧包括使用先前建立的标准通知接收系统解码当前帧的指示符。初始标准包括指定图像的选择性增强区域的移位因子值; 在图像中的至少一个感兴趣区域的位置，位移矢量，大小和增强因子; 以及包含在发射和接收系统中的已知固定值。

10. 发明授权

US06940905B2 Double-loop motion-compensation fine granular scalability 失效
标题翻译：双循环运动补偿精细粒度可扩展性
公开(公告)号：US06940905B2
公开(公告)日：2005-09-06
申请号：US09887743
申请日：2001-06-21
申请人： Mihaela Van Der Schaar , Hayder Radha
发明人： Mihaela Van Der Schaar , Hayder Radha
IPC分类号： G06T9/00 , H04N7/26 , H04N7/50 , H04N7/12
CPC分类号： H04N19/34 , H04N19/31 , H04N19/61
摘要： A video coding technique having motion compensation within a fine granular scalable coded enhancement layer. In one embodiment, the video coding technique involves a two-loop prediction-based enhancement layer including non-motion-predicted enhancement layer I- and P-frames and motion-predicted enhancement layer B-frames. The motion-predicted enhancement layer B-frames are computed using: 1) motion-prediction from two temporally adjacent differential I- and P- or P- and P-frame residuals, and 2) the differential B-frame residuals obtained by subtracting the decoded base layer B-frame residuals from the original base layer B-frame residuals. In a second embodiment, the enhancement layer further includes motion-predicted enhancement layer P-frames. The motion-predicted enhancement layer P-frames are computed using: 1) motion-prediction from a temporally adjacent differential I- or P-frame residual, and 2) the differential P-frame residual obtained by subtracting the decoded base layer P-frame residual from the original base layer P-frame residual.
摘要翻译：一种在细粒度可缩放编码增强层内具有运动补偿的视频编码技术。在一个实施例中，视频编码技术涉及包括非运动预测增强层I和P帧以及运动预测增强层B帧的基于双循环预测的增强层。运动预测增强层B帧使用以下方式计算：1）来自两个时间上相邻的差分I和P或P和P帧残差的运动预测，以及2）通过减去解码的基本层B帧残差从原始基底层B帧残差。在第二实施例中，增强层还包括运动预测增强层P帧。使用以下方式计算运动预测增强层P帧：1）来自时间上相邻的差分I或P帧残差的运动预测，以及2）通过减去经解码的基本层P帧获得的差分P帧残差残留从原始基层P帧残差。

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