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    • 1. 发明申请
    • METHOD FOR BROWSING VIDEO STREAMS
    • 浏览视频流的方法
    • US20110249746A1
    • 2011-10-13
    • US12998899
    • 2009-12-08
    • Jiheng YangLi Hua ZhuHui Zhang
    • Jiheng YangLi Hua ZhuHui Zhang
    • H04N7/26
    • H04N19/00H04N7/0102H04N7/0125H04N7/0152H04N7/0157H04N19/48H04N21/234363H04N21/234381H04N21/43637
    • Video equipment, e.g. for TV producers studios, need to display multiple channels of bit-streams simultaneously. Decoding multiple streams of high bit-rate videos is extremely computational intensive. An improved method for browsing an encoded frequency domain video sequence comprises steps of determining a spatial and/or temporal reduction level for browsing a video sequence, determining according to the determined reduction level frames, fields or parts of blocks or macroblocks to be skipped for decoding, and decoding the remaining data to a video with lower spatial and/or temporal resolution. The reduction may include adaptive partial coefficient decoding, motion vector truncation and/or simplified deblocking filtering. The reduction of spatial resolution is advantageously performed in the frequency domain, so that the inverse quantization process and the iDCT processes require less computing.
    • 视频设备,例如 对于电视制作工作室,需要同时显示多个通道的位流。 解码多个高比特率视频流是非常计算密集的。 用于浏览编码的频域视频序列的改进方法包括确定用于浏览视频序列的空间和/或时间缩减级别的步骤,根据所确定的缩减级别帧,要跳过的块或宏块的区域或部分进行解码 并且将剩余数据解码为具有较低空间和/或时间分辨率的视频。 减少可以包括自适应部分系数解码,运动矢量截断和/或简化的去块滤波。 有利地在频域中执行空间分辨率的降低,使得逆量化处理和iDCT处理需要更少的计算。
    • 5. 发明申请
    • Method for video decoding supported by graphics processing unit
    • 由图形处理单元支持的视频解码方法
    • US20100135418A1
    • 2010-06-03
    • US12590978
    • 2009-11-17
    • Hui ZhangLi Hua ZhuCharles Chuanming Wang
    • Hui ZhangLi Hua ZhuCharles Chuanming Wang
    • H04N11/02
    • H04N19/423H04N19/436H04N19/44
    • A method for utilizing a CUDA based GPU to accelerate a complex, sequential task such as video decoding, comprises decoding on a CPU headers and macroblocks of encoded video, performing inverse quantization (on CPU or GPU), transferring the picture data to GPU, where it is stored in a global buffer, and then on the GPU performing inverse waveform transforming of the inverse quantized data, performing motion compensation, buffering the reconstructed picture data in a GPU global buffer, determining if the decoded picture data are used as reference for decoding a further picture, and if so, copying the decoded picture data from the GPU global buffer to a GPU texture buffer. Advantages are that the data communication between CPU and GPU is minimized, the workload of CPU and GPU is balanced and the modules off-loaded to GPU can be efficiently realized since they are data-parallel and compute-intensive.
    • 一种利用基于CUDA的GPU来加速诸如视频解码的复杂顺序任务的方法包括对编码视频的CPU头部和宏块进行解码,执行逆量化(在CPU或GPU上),将图像数据传送到GPU,其中 存储在全局缓冲器中,然后在GPU上执行逆量化数据的逆波形变换,执行运动补偿,在GPU全局缓冲器中缓冲重建的图像数据,确定解码的图像数据是否用作解码的参考 如果是,将解码的图像数据从GPU全局缓冲器复制到GPU纹理缓冲器。 优点是CPU和GPU之间的数据通信最小化,CPU和GPU的工作负载平衡,并且卸载到GPU的模块可以有效地实现,因为它们是数据并行和计算密集型的。
    • 6. 发明授权
    • Method for video decoding supported by graphics processing unit
    • 由图形处理单元支持的视频解码方法
    • US08542745B2
    • 2013-09-24
    • US12590978
    • 2009-11-17
    • Hui ZhangLi Hua ZhuCharles Chuanming Wang
    • Hui ZhangLi Hua ZhuCharles Chuanming Wang
    • H04N11/02
    • H04N19/423H04N19/436H04N19/44
    • A method for utilizing a CUDA based GPU to accelerate a complex, sequential task such as video decoding, comprises decoding on a CPU headers and macroblocks of encoded video, performing inverse quantization (on CPU or GPU), transferring the picture data to GPU, where it is stored in a global buffer, and then on the GPU performing inverse waveform transforming of the inverse quantized data, performing motion compensation, buffering the reconstructed picture data in a GPU global buffer, determining if the decoded picture data are used as reference for decoding a further picture, and if so, copying the decoded picture data from the GPU global buffer to a GPU texture buffer. Advantages are that the data communication between CPU and GPU is minimized, the workload of CPU and GPU is balanced and the modules off-loaded to GPU can be efficiently realized since they are data-parallel and compute-intensive.
    • 一种利用基于CUDA的GPU来加速诸如视频解码的复杂顺序任务的方法包括对编码视频的CPU头部和宏块进行解码,执行逆量化(在CPU或GPU上),将图像数据传送到GPU,其中 存储在全局缓冲器中,然后在GPU上执行逆量化数据的逆波形变换,执行运动补偿,在GPU全局缓冲器中缓冲重建的图像数据,确定解码的图像数据是否用作解码的参考 如果是,将解码的图像数据从GPU全局缓冲器复制到GPU纹理缓冲器。 优点是CPU和GPU之间的数据通信最小化,CPU和GPU的工作负载平衡,并且卸载到GPU的模块可以有效地实现,因为它们是数据并行和计算密集型的。
    • 7. 发明申请
    • METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE DATA
    • 编码/解码图像数据的方法和装置
    • US20130089266A1
    • 2013-04-11
    • US13805195
    • 2010-06-21
    • Jiheng YangHui Zhang
    • Jiheng YangHui Zhang
    • H04N7/32
    • H04N19/50H04N19/11H04N19/176H04N19/436H04N19/593
    • Several attempts have been tried to improve the performance of intra-prediction in video encoding and decoding, which are targeting at pixel level parallelization. However, the prior art methods provide no solution for implementing an improved intra-prediction method on a parallel processing platform. The present invention uses estimated predictors instead of reconstructed exact predictors. This enables faster estimation of predictors, and allows an encoder to perform intra-prediction for all blocks of at least a portion of an image simultaneously. A method for encoding image data, a device for encoding image data, a method for decoding image data and a device for decoding image data are disclosed.
    • 已经尝试了几种尝试来改善视频编码和解码中的帧内预测的性能,其目标是以像素级并行化。 然而,现有技术方法不提供用于在并行处理平台上实现改进的帧内预测方法的解决方案。 本发明使用估计的预测变量而不是重构的精确预测器。 这使得能够更快地估计预测器,并且允许编码器同时对图像的至少一部分的所有块执行帧内预测。 公开了图像数据的编码方法,图像数据的编码装置,图像数据的解码方法以及解码图像数据的装置。
    • 9. 发明申请
    • Method and apparatus for image encoding using hold-MBs, and method and apparatus for image decoding using hold-MBs
    • 使用保持MB的图像编码的方法和装置,以及使用保持MB的图像解码的方法和装置
    • US20110058608A1
    • 2011-03-10
    • US12807640
    • 2010-09-10
    • Jiheng YangHui ZhangYumeng Li
    • Jiheng YangHui ZhangYumeng Li
    • H04N7/50
    • H04N19/436H04N19/102H04N19/11H04N19/129H04N19/147H04N19/159H04N19/174H04N19/176H04N19/46H04N19/593H04N19/61H04N19/70
    • In video/image coding, macroblocks (MBs) are often intra coded in raster scan order, starting from one seed MB. The invention improves intra prediction for optimized usage of multi-core processors. Encoding starts from multiple intra coded seed MBs per frame, and continues with adjacent MBs. A predefined prediction spread pattern (growth pattern) is used that comprises simultaneous prediction of two or more adjacent MBs per MB. Adjacent MBs with high coding cost are called “Hold-MB” and can be held from being processed, until another neighbouring edge is available for prediction. Encoding comprises marking a MB with high coding cost for deferred prediction. This MB is skipped while the other MBs are encoded. When a further adjacent MB was encoded, the marked MB is predicted based on the adjacent MBs. Since a decoder receives the deferment marks and uses the same growth pattern, it follows the encoder, and predicts and decodes correctly.
    • 在视频/图像编码中,从一个种子MB开始,宏块(MB)通常以光栅扫描顺序进行帧内编码。 本发明改进了多核处理器的优化使用的帧内预测。 编码从每帧的多个帧内编码种子MB开始,并且继续相邻的MB。 使用预定义的预测扩展模式(生长模式),其包括每MB同时预测两个或更多个相邻MB。 具有高编码成本的相邻MB被称为“保持MB”,并且可以保持不被处理,直到另一个相邻边缘可用于预测。 编码包括以延迟预测的高编码成本标记MB。 当MB被编码时,MB被跳过。 当进一步相邻的MB被编码时,基于相邻的MB来预测标记的MB。 由于解码器接收延迟标记并使用相同的增长模式,所以它遵循编码器,并且正确地预测和解码。