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1. 发明申请

WO2012009209A2 DIFFERENTIAL CODING OF INTRA DIRECTIONS (DCIC) 审中-公开
标题翻译：内部方向的差分编码（DCIC）
公开(公告)号：WO2012009209A2
公开(公告)日：2012-01-19
申请号：PCT/US2011/043305
申请日：2011-07-08
申请人： SONY CORPORATION , MAANI, Ehsan , LIU, Wei , TABATABAI, Ali
发明人： MAANI, Ehsan , LIU, Wei , TABATABAI, Ali
IPC分类号： H04N7/32
CPC分类号： H04N19/00551 , H04N19/463 , H04N19/593
摘要： Spatial domain directional intra prediction has been shown to be very effective to remove the correlation between the pixels in the current block and reconstructed neighbors. In AVC, 8 directional prediction modes (plus the DC prediction mode) are defined. The prediction mode number is signaled to the decoder using a simple predictive coding method. The previous intra prediction methods have two major disadvantages: lack of precision for arbitrary directional patterns and accuracy lack of accuracy to exploit geometric dependency between blocks. To address these issues, a new method accurately predicts the intra directions from reconstructed neighboring pixels and differentially encode the intra directions. This allows a more precise directional prediction without the significant increase in the cost for transmitting the side information.
摘要翻译：已经显示空间域方向帧内预测对于去除当前块中的像素和重构的邻居之间的相关性是非常有效的。在AVC中，定义了8种方向预测模式（加上DC预测模式）。使用简单的预测编码方法将预测模式编号发信号给解码器。先前的帧内预测方法有两个主要的缺点：对于任意方向模式缺乏精度，并且精度不足以利用块之间的几何相关性。为了解决这些问题，一种新方法从重建的相邻像素准确地预测帧内方向并对帧内方向进行差分编码。这可以实现更精确的方向预测，而不会显着增加传输边信息的成本。

2. 发明申请

WO2013109359A1 LOGICAL INTRA MODE NAMING IN HEVC VIDEO CODING 审中-公开
标题翻译： HEVC视频编码中的逻辑内部模式命名
公开(公告)号：WO2013109359A1
公开(公告)日：2013-07-25
申请号：PCT/US2012/069023
申请日：2012-12-11
申请人： SONY CORPORATION , MAANI, Ehsan , TABATABAI, Ali , XU, Jun
发明人： MAANI, Ehsan , TABATABAI, Ali , XU, Jun
IPC分类号： H04N7/12
CPC分类号： H04N19/593 , H04N19/463 , H04N19/61 , H04N19/70
摘要： A method and apparatus of using logical mode numbers during both prediction and coding in the bit stream, such as for high efficiency video coders (HEVC). These logical intra mode numbers are sorted based on angle which as a result leads to improved coding designs with fewer and smaller look-up tables, and a small gain in coding efficiency. Furthermore, by using this type of naming, the number of most probable modes (MPMs) can be readily extended since no additional tables are required. The use of three MPMs achieves a larger gain of 0.25% and 0.31% for the AI_HE and AI_LC cases, respectively.
摘要翻译：在诸如用于高效率视频编码器（HEVC）的比特流中的预测和编码期间都使用逻辑模式号的方法和装置。这些逻辑内部模式编号基于角度进行排序，其结果导致具有更少和更小的查找表的改进的编码设计，以及编码效率的小增益。此外，通过使用这种类型的命名，可以容易地扩展最可能模式（MPM）的数量，因为不需要额外的表。对于AI_HE和AI_LC病例，使用三个MPM分别实现了0.25％和0.31％的较大增益。

3. 发明申请

WO2013109360A2 FLEXIBLE BAND OFFSET MODE IN SAMPLE ADAPTIVE OFFSET IN HEVC 审中-公开
标题翻译： HEVC中样品自适应偏移中的柔性带偏移模式
公开(公告)号：WO2013109360A2
公开(公告)日：2013-07-25
申请号：PCT/US2012/069024
申请日：2012-12-11
申请人： SONY CORPORATION , MAANI, Ehsan , TABATABAI, Ali , XU, Jun
发明人： MAANI, Ehsan , TABATABAI, Ali , XU, Jun
IPC分类号： H04N7/26
CPC分类号： H04N19/44 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/50 , H04N19/61 , H04N19/82 , H04N19/86 , H04N19/96
摘要： A Flexible Band Offset (FBO) apparatus and method of performing Sample Adaptive Offset (SAO) filtering within encoders and decoders, such as according to the High Efficiency Video Coding (HEVC) standard, and similarly configured coding devices. The number of Band Offset (BO) modes and the number of necessary offsets is reduced. The invention beneficially provides simpler coding, reduces temporary buffer size requirements, and can yield a small performance gain over existing SAO techniques of HEVC test model HM 5.
摘要翻译：一种灵活的带偏移（FBO）装置和方法，用于根据高效率视频编码（HEVC）标准和类似配置的编码装置在编码器和解码器内执行采样自适应偏移（SAO）滤波。减少了带宽偏移（BO）模式的数量和必要的偏移量。本发明有利地提供了更简单的编码，减少了临时缓冲区大小的要求，并且与现有的HEVC测试模型HM5的SAO技术相比可以产生小的性能增益。

4. 发明申请

WO2011097199A2 RECURSIVE ADAPTIVE INTERPOLATION FILTERS (RAIF) 审中-公开
标题翻译：自适应插值滤波器（RAIF）
公开(公告)号：WO2011097199A2
公开(公告)日：2011-08-11
申请号：PCT/US2011/023287
申请日：2011-02-01
申请人： SONY CORPORATION , MAANI, Ehsan , LIU, Wei
发明人： MAANI, Ehsan , LIU, Wei
IPC分类号： H04N7/32
CPC分类号： H04N19/523 , H04N19/117 , H04N19/61
摘要： Adaptive interpolation filters which are recursively updated based on previously reconstructed images, and which can differ within a single frame as they adapt to spatial changes. An initial set of filters is known within a coding system, including both encoder and decoder. Fractional-pel motion estimation of macroblock is generalized by communicating integer-pel motion vectors and an index to a selected prediction interpolation filter. Prediction filters are updated based on local correlation data comprising auto-correlation data, and/or cross-correlation data.
摘要翻译：自适应内插滤波器，其基于先前重建的图像递归地更新，并且在适应空间变化的情况下在单个帧内可以不同。在编码系统中已知一组初始滤波器，包括编码器和解码器。通过将整数像素运动矢量和索引传送到所选择的预测内插滤波器来推广宏块的分数像素运动估计。基于包括自相关数据和/或互相关数据的局部相关数据来更新预测滤波器。

5. 发明申请

WO2012118569A1 VISUALLY OPTIMIZED QUANTIZATION 审中-公开
标题翻译：视觉优化量化
公开(公告)号：WO2012118569A1
公开(公告)日：2012-09-07
申请号：PCT/US2012/021870
申请日：2012-01-19
申请人： SONY CORPORATION , LIU, Wei , GHARAVI-ALKHANSARI, Mohammad , MAANI, Ehsan
发明人： LIU, Wei , GHARAVI-ALKHANSARI, Mohammad , MAANI, Ehsan
IPC分类号： G06K9/00
CPC分类号： H04N19/154 , H04N19/126 , H04N19/176
摘要： Visually optimized quantization is described herein. Specifically, the visually optimized quantization is for arbitrary block-based transforms such as Mode-Dependent Directional Transform (MDDT). The compression method involves the process of taking a discrete cosine transform of an MDDT basis function, obtaining the frequency weights, and computing the contrast sensitivity function for each of the frequency components. The overall effect of the distortion is calculated by error pooling and the quantization matrix is the inverse proportional of the overall effect.
摘要翻译：这里描述了视觉优化的量化。具体地，视觉上优化的量化用于诸如模式相关方向变换（MDDT）的任意的基于块的变换。压缩方法包括采用MDDT基函数的离散余弦变换，获得频率权重，以及计算每个频率分量的对比度灵敏度函数的过程。通过误差池计算失真的整体效应，量化矩阵与整体效应成反比。

6. 发明申请

WO2012096732A1 PARAMETRIC LOOP FILTER 审中-公开
标题翻译：参数环路滤波器
公开(公告)号：WO2012096732A1
公开(公告)日：2012-07-19
申请号：PCT/US2011/063897
申请日：2011-12-08
申请人： SONY CORPORATION , LIU, Wei , MAANI, Ehsan , DONG, Lina
发明人： LIU, Wei , MAANI, Ehsan , DONG, Lina
IPC分类号： H04N7/12
CPC分类号： H04N7/26888 , H04N19/117 , H04N19/14 , H04N19/196 , H04N19/463 , H04N19/82 , H04N19/86
摘要： A parametric loop filter uses a set of fixed filters to remove or reduce noise and artifacts introduced during video coding. The filters are pre-trained offline and hardwired into encoder and decoder, instead of online trained Wiener filters. The filters are able to be specified using one or more parameters including: direction, bandwidth along the direction (bw // ) and bandwidth perpendicular to the direction (bw ⊥ ). The filter to be used is able to be derived from local image characteristics or predicted from neighboring blocks. The parametric loop filter utilizes much less computation, delay and memory access at the encoder. Fixed coefficients allow fast implementation of filtering at the decoder. A parametric loop filter is able to be combined with online training to further improve performance, by allowing one or more fixed filters to be replaced with online trained Wiener filters.
摘要翻译：参数环路滤波器使用一组固定滤波器来去除或减少视频编码期间引入的噪声和伪像。滤波器经过离线预编程和硬连线到编码器和解码器中，而不是在线训练的维纳滤波器。可以使用一个或多个参数指定滤波器，包括：沿方向的方向，带宽（bw //）和垂直于方向（bw？）的带宽。要使用的滤波器能够从本地图像特征导出或从相邻块预测。参数环路滤波器在编码器处使用更少的计算，延迟和存储器访问。固定系数允许在解码器处快速实现滤波。参数环路滤波器能够与在线培训相结合，以进一步提高性能，允许使用在线训练的维纳滤波器替换一个或多个固定滤波器。

7. 发明申请

WO2011130051A1 CONTEXT ADAPTIVE DIRECTIONAL INTRA PREDICTION 审中-公开
标题翻译：上下文自适应方向预测
公开(公告)号：WO2011130051A1
公开(公告)日：2011-10-20
申请号：PCT/US2011/031169
申请日：2011-04-05
申请人： SONY CORPORATION , LIU, Wei , MAANI, Ehsan , GHARAVI-ALKHANSARI, Mohammad
发明人： LIU, Wei , MAANI, Ehsan , GHARAVI-ALKHANSARI, Mohammad
IPC分类号： H04N7/34
CPC分类号： H04N19/14 , H04N19/11 , H04N19/176 , H04N19/61
摘要： Enhanced directional prediction apparatus and methods are taught which are based on edge-based adaptive directional estimation, for providing an improved prediction direction for intra prediction within a coding device. Image gradient vectors are obtained for pixels in the neighborhood of the current block, and edge directions determined. Candidate edge directions are processed to derive a dominant edge direction in response to defining an objective function as a summation of projections to a candidate direction and computing suggested direction of each neighboring pixel. The dominant edge direction may be utilized for the prediction direction, such as in response to a detection mode flag signaled to the decoder, or modified by an angular adjustment, which can be communicated to a decoder.
摘要翻译：教导了基于边缘自适应方向估计的增强方向预测装置和方法，用于为编码装置内的帧内预测提供改进的预测方向。为当前块的邻域中的像素获得图像梯度向量，并确定边缘方向。响应于将目标函数定义为候选方向的投影的总和并计算每个相邻像素的建议方向，处理候选边缘方向以导出主导边缘方向。主导边缘方向可以用于预测方向，诸如响应于向信号通知解码器的检测模式标志，或通过角度调整进行修改，其可被传送到解码器。

8. 发明申请

WO2013109838A1 CHROMA QUANTIZATION PARAMETER EXTENSION 审中-公开
标题翻译：色谱定量参数扩展
公开(公告)号：WO2013109838A1
公开(公告)日：2013-07-25
申请号：PCT/US2013/022077
申请日：2013-01-18
申请人： SONY CORPORATION , XU, Jun , SATO, Kazushi , MAANI, Ehsan
发明人： XU, Jun , SATO, Kazushi , MAANI, Ehsan
IPC分类号： H04N7/50
CPC分类号： H04N19/124 , H04N19/126 , H04N19/13 , H04N19/147 , H04N19/149 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/436 , H04N19/61 , H04N19/70 , H04N19/80
摘要： The quantization parameters (QP) for Chroma are extended up to and more preferably to the same range as Luma QP (e.g., 0 to 51). Previous, values of Chroma QP only extended up to 39. Techniques are provided for determining extended Chroma QP values (e.g., for Cr and Cb) based on the Luma QP and picture level chroma offsets. In one preferred embodiment, slice level offsets are added making the method particularly well-suited for slice level parallel processing. The extension of Chroma QP enhances functionality, flexibility and friendliness of the High Efficiency Video Coding (HEVC) standard for various applications.
摘要翻译：用于色度的量化参数（QP）被扩展到并且更优选地与亮度QP（例如，0至51）相同的范围。之前，Chroma QP的值仅延伸到39.提供了基于亮度QP和图像级色度偏移来确定扩展色度QP值（例如，对于Cr和Cb）的技术。在一个优选实施例中，添加限幅电平偏移，使得该方法特别适合于片级并行处理。 Chroma QP的扩展增强了各种应用的高效视频编码（HEVC）标准的功能，灵活性和友好性。

9. 发明申请

WO2013085585A1 SYNTAX EXTENSION OF ADAPTIVE LOOP FILTER IN HEVC 审中-公开
标题翻译： HEVC中自适应循环滤波器的语音扩展
公开(公告)号：WO2013085585A1
公开(公告)日：2013-06-13
申请号：PCT/US2012/055041
申请日：2012-09-13
申请人： SONY CORPORATION , MAANI, Ehsan
发明人： MAANI, Ehsan
IPC分类号： H04N7/26 , H04N7/12 , H04N7/32
CPC分类号： H04N19/82 , H04N19/117 , H04N19/174 , H04N19/46 , H04N19/70
摘要： An extension of an adaptive loop filter includes, in the sequence parameter set, a bit is added to signal whether the "default" or fixed adaptive loop filters are to be updated for this sequence. If yes, then the new set of default filters are explicitly coded. In the picture parameter set, a flag is used to determine whether to update the default filters at the picture level. If yes, filter coefficients are transmitted. In the Slice Header, a flag is added to show whether the online filter and the fixed filters are both available for block-level switching or not. Block-level filter switching is also referred to as ALF's CU control parameters. In the LCU Header, the maximum depth (minimum block-size) for the ALF's CU control parameters (block-level filter switchings) is explicitly signaled.
摘要翻译：自适应环路滤波器的扩展包括在序列参数集中，添加一个比特，以发出是否为该序列更新“默认”或固定自适应环路滤波器。如果是，则新的默认过滤器集被明确地编码。在图像参数集中，使用一个标志来确定是否更新图像级别的默认滤镜。如果是，则传输滤波器系数。在Slice Header中，添加一个标志来显示在线过滤器和固定过滤器是否都可用于块级切换。块级滤波器切换也称为ALF的CU控制参数。在LCU接头中，ALF的CU控制参数（块级滤波器切换）的最大深度（最小块大小）被明确表示。

10. 发明申请

WO2013085584A1 ENCODER OPTIMIZATION OF ADAPTIVE LOOP FILTERS IN HEVC 审中-公开
标题翻译： ENCODER优化HEVC中的自适应环路滤波器
公开(公告)号：WO2013085584A1
公开(公告)日：2013-06-13
申请号：PCT/US2012/055032
申请日：2012-09-13
申请人： SONY CORPORATION , MAANI, Ehsan
发明人： MAANI, Ehsan
IPC分类号： H04N11/02 , H04N7/26 , G06K9/46
CPC分类号： H04N19/82 , H04N19/117 , H04N19/119 , H04N19/147 , H04N19/176
摘要： An optimized adaptive loop filter does not redesign filters inside the optimization loop of signaling depth which saves computations. Additionally, the Sum of Squared Errors (SSE) (distortion) of blocks is computed for the smallest blocks, thus, allowing for the distortion of larger blocks to be computed efficiently by adding block SSEs together which saves computations by removing redundant operations to calculate SSE of a block each time.
摘要翻译：优化的自适应环路滤波器不会重新设计节省计算的信令深度优化循环内的滤波器。另外，为最小块计算块的平方误差（SSE）（失真）（失真），从而允许通过将块SSE加在一起来有效计算较大块的失真，通过删除冗余操作来计算SSE来节省计算每一个块。

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