公开(公告)号：US09088770B2

公开(公告)日：2015-07-21

申请号：US13605387

申请日：2012-09-06

Applicant: Wenhao Zhang ,  Yi-Jen Chiu ,  Pieter Kapsenberg ,  Lidong Xu ,  Yu Han ,  Zhipin Apple Deng ,  Xiaoxia Cai

Inventor： Wenhao Zhang ,  Yi-Jen Chiu ,  Pieter Kapsenberg ,  Lidong Xu ,  Yu Han ,  Zhipin Apple Deng ,  Xiaoxia Cai

IPC: H04N7/12 ,  H04N19/122 ,  H04N19/96 ,  H04N19/91

CPC classification number: H04N19/60 ,  H04N19/122 ,  H04N19/91 ,  H04N19/96

Abstract: Systems, apparatus, articles, and methods are described including operations for size based transform unit context derivation.

Abstract translation: 描述了系统，装置，物品和方法，包括基于大小的变换单元上下文导出的操作。

公开(公告)号：US20150163512A1

公开(公告)日：2015-06-11

申请号：US13996580

申请日：2012-09-28

Applicant: Xiaoxia Cai ,  Zhipin Deng ,  Yu Han ,  Lidong Xu ,  Wenhao Zhang ,  Yi-Jen Chiu

Inventor： Xiaoxia Cai ,  Zhipin Deng ,  Yu Han ,  Lidong Xu ,  Wenhao Zhang ,  Yi-Jen Chiu

IPC: H04N19/593

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30

Abstract: Systems, devices and methods are described including at an enhancement layer (EL) video encoder determining an intra mode for a current block of an EL frame based, at least in part, on one or more first intra mode candidates obtained from at least one of a lower level EL frame, or a base layer (BL) frame.

Abstract translation: 描述了系统，设备和方法，其包括在增强层（EL）视频编码器处，至少部分地基于从以下各项中的至少一个获得的一个或多个第一帧内模式候选，确定EL帧的当前块的帧内模式： 下层EL框架或基层（BL）框架。

公开(公告)号：US20140355895A1

公开(公告)日：2014-12-04

申请号：US14218457

申请日：2014-03-18

Applicant: Lidong Xu ,  Chen Wang ,  Yi-Jen Chiu ,  Jong Dae Oh ,  Heon-Mo Koo

Inventor： Lidong Xu ,  Chen Wang ,  Yi-Jen Chiu ,  Jong Dae Oh ,  Heon-Mo Koo

IPC: G06K9/62 ,  H04N5/232

CPC classification number: G06K9/6298 ,  H04N5/23267

Abstract: One or more apparatus and method for adaptively detecting motion instability in video. In embodiments, video stabilization is predicated on adaptive detection of motion instability. Adaptive motion instability detection may entail determining an initial motion instability state associated with a plurality of video frames. Subsequent transitions of the instability state may be detected by comparing a first level of instability associated with a first plurality of the frames to a second level of instability associated with a second plurality of the frames. Image stabilization of received video frames may be toggled first based on the initial instability state, and thereafter based on detected changes in the instability state.Output video frames, which may be stabilized or non-stabilized, may then be stored to a memory. In certain embodiments, video motion instability is scored based on a probability distribution of video frame motion jitter values.

Abstract translation: 一种或多种用于自适应地检测视频中的运动不稳定性的装置和方法。 在实施例中，视频稳定基于运动不稳定性的自适应检测。 自适应运动不稳定性检测可能需要确定与多个视频帧相关联的初始运动不稳定状态。 可以通过将与第一多个帧相关联的不稳定性的第一级别与与第二多个帧相关联的第二级不稳定性进行比较来检测不稳定状态的后续转换。 首先可以基于初始不稳定状态来切换所接收的视频帧的图像稳定性，然后基于检测到的不稳定状态的变化。 然后可以将稳定或不稳定的输出视频帧存储到存储器中。 在某些实施例中，基于视频帧运动抖动值的概率分布对视频运动不稳定性进行评分。

公开(公告)号：US20140211846A1

公开(公告)日：2014-07-31

申请号：US14244364

申请日：2014-04-03

Applicant: Lidong Xu ,  Yi-Jen Chiu ,  Yu Han ,  Wenhao Zhang

Inventor： Lidong Xu ,  Yi-Jen Chiu ,  Yu Han ,  Wenhao Zhang

IPC: H04N19/186 ,  H04N19/60 ,  H04N19/50

CPC classification number: H04N19/105 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61

Abstract: Systems, apparatus and methods are described including determining a prediction residual for a channel of video data; and determining, using the first channel's prediction residual, a prediction residual for a second channel of the video data. Further, a prediction residual for a third channel of the video data may be determined using the second channel's prediction residual.

公开(公告)号：US08787465B2

公开(公告)日：2014-07-22

申请号：US11396102

申请日：2006-03-31

Applicant: Yi-Jen Chiu ,  Prasanna Singamsetty ,  Munsi Haque

Inventor： Yi-Jen Chiu ,  Prasanna Singamsetty ,  Munsi Haque

IPC: H04N7/12

CPC classification number: H04N19/112 ,  H04N19/16 ,  H04N19/176 ,  H04N19/29

Abstract: An embodiment improves the operation of a H.264 and Joint Scalable Video Codec (e.g., JSVC/H.264 Amendment 3) video decoder by managing neighboring block data during the decoding process. An embodiment pre-computes neighboring block tables to efficiently locate the neighboring block data required to decode a current macroblock. In particular, the pre-computed most probable joint neighboring block tables disclosed herein handle both macroblock adaptive frame field (MBAFF) coding and non-MBAFF coding. An embodiment is further capable of managing variable block sizes. Other embodiments are described and claimed.

Abstract translation: 实施例通过在解码过程期间管理相邻块数据来改进H.264和联合可缩放视频编解码器（例如JSVC / H.264修正版3）视频解码器的操作。 实施例预先计算相邻块表以有效地定位解码当前宏块所需的相邻块数据。 特别地，本文公开的预先计算的最可能的联合相邻块表处理宏块自适应帧场（MBAFF）编码和非MBAFF编码。 一个实施例还能够管理可变块大小。 描述和要求保护其他实施例。

公开(公告)号：US08724711B2

公开(公告)日：2014-05-13

申请号：US13512992

申请日：2011-07-12

Applicant: Lidong Xu ,  Yu Han ,  Yi-Jen Chiu ,  Wenhao Zhang

Inventor： Lidong Xu ,  Yu Han ,  Yi-Jen Chiu ,  Wenhao Zhang

IPC: H04N7/12

CPC classification number: H04N19/00569 ,  H04N19/105 ,  H04N19/11 ,  H04N19/186 ,  H04N19/61 ,  H04N19/82

Abstract: Systems, devices and methods for performing luma-based chroma ultra prediction are described. Down-sample filters may be applied to luma values of luma pixel positions to generate reconstructed luma values for chroma pixel positions in a prediction unit of an intra frame. The down-sampled reconstructed luma values may then be used to predict chroma values for the chroma pixel positions. In some implementations, a reconstructed luma value of a chroma position may be used to predict that position's chroma value. In other implementations, reconstructed luma values of neighboring chroma pixel positions may be analyzed to adaptively predict a chroma value for a chroma pixel position.

Abstract translation: 描述了用于执行基于亮度的色度帧内预测的系统，设备和方法。 下采样滤波器可以应用于亮度像素位置的亮度值，以生成帧内预测单元中的色度像素位置的重建亮度值。 然后可以使用下采样的重构亮度值来预测色度像素位置的色度值。 在一些实现中，可以使用色度位置的重建亮度值来预测该位置的色度值。 在其他实现中，可以分析相邻色度像素位置的重建亮度值以自适应地预测色度像素位置的色度值。

公开(公告)号：US08625681B2

公开(公告)日：2014-01-07

申请号：US12217805

申请日：2008-07-09

Applicant: Lidong Xu ,  Yi-Jen Chiu

Inventor： Lidong Xu ,  Yi-Jen Chiu

IPC: H04N1/409 ,  H04N5/217

CPC classification number: H04N19/82 ,  H04N19/117 ,  H04N19/147 ,  H04N19/17 ,  H04N19/46 ,  H04N19/61

Abstract: Techniques are described that can be used to determine parameters of an adaptive Wiener filter to apply to a video region. The following parameters of the Wiener filter may be adjusted: coefficients, coefficient quantization, filter type, filter size, prediction mode, entropy encoding, and number of filter tables. The parameters associated with the lowest rate distortion cost of the encoder are selected for transmission with the encoded video. If not using adaptive Wiener filtering results in a lowest rate distortion cost, then adaptive Wiener filtering is not used for the video region. If using adaptive Wiener filtering results in a lowest rate distortion cost, then the parameters applied by the adaptive Wiener filtering that result in the lowest rate distortion cost are communicated with the filtered video region.

Abstract translation: 描述了可以用于确定适用于视频区域的自适应维纳滤波器的参数的技术。 可以调整维纳滤波器的以下参数：系数，系数量化，滤波器类型，滤波器大小，预测模式，熵编码和滤波器表数。 选择与编码器的最低速率失真成本相关联的参数以便与编码视频一起传输。 如果不使用自适应维纳滤波导致最低速率失真成本，则视频区域不使用自适应维纳滤波。 如果使用自适应维纳滤波导致最低速率失真成本，则导致最低速率失真成本的自适应维纳滤波所应用的参数与滤波视频区域通信。

公开(公告)号：US20130336402A1

公开(公告)日：2013-12-19

申请号：US13895939

申请日：2013-05-16

Applicant: Lidong Xu ,  Yi-Jen Chiu

Inventor： Lidong Xu ,  Yi-Jen Chiu

IPC: H04N7/36

CPC classification number: H04N19/139 ,  H04N5/144 ,  H04N19/513 ,  H04N19/521 ,  H04N19/56 ,  H04N19/57

Abstract: Systems, methods, and computer program products that can be used to determine a search range (SR) when performing motion estimation at, for example, a video encoder or decoder. Determining a motion vector for a current block during motion estimation may involve searching within a search window that may reside in a reference frame, or in a previously decoded block that spatially or temporally neighbors the current block. Such a search seeks a motion vector that minimizes a metric, such as a sum of absolute differences between corresponding blocks of reference frames. A motion vector that minimizes such a metric may be a good candidate for use in motion estimation. The search may become more efficient if a search range is determined such that the extent of the search is bounded. A search range may be determined at the block level or at the picture level.

Abstract translation: 当在例如视频编码器或解码器上执行运动估计时，可用于确定搜索范围（SR）的系统，方法和计算机程序产品。 在运动估计期间确定当前块的运动矢量可以涉及在可能驻留在参考帧中的搜索窗口内或在空间上或时间上邻近当前块的先前解码的块中进行搜索。 这样的搜索寻找使度量最小化的运动矢量，诸如对应的参考帧块之间的绝对差的和。 使这种度量最小化的运动矢量可能是用于运动估计的良好候选。 如果确定搜索范围使得搜索范围有界，则搜索可能变得更有效。 可以在块级别或图片级别确定搜索范围。

公开(公告)号：US20120257104A1

公开(公告)日：2012-10-11

申请号：US13083681

申请日：2011-04-11

Applicant: Jong Dae Oh ,  Yi-Jen Chiu ,  Sang-Hee Lee ,  Ning Lu

Inventor： Jong Dae Oh ,  Yi-Jen Chiu ,  Sang-Hee Lee ,  Ning Lu

IPC: H04N7/01

CPC classification number: H04N7/0115

Abstract: The format of telecined video may be determined including a bottom field first cadence. In addition, video using 2:3:3:2 top field first can be identified. Moreover, mixed cadence videos can also be detected. In some embodiments, mixed cadence videos may be detected by calculating variances of different areas within a frame.

Abstract translation: 可以确定电视视频的格式，包括底场第一节奏。 另外，可以首先识别使用2：3：3：2顶场的视频。 此外，还可以检测到混合的节奏视频。 在一些实施例中，可以通过计算帧内不同区域的方差来检测混合节奏视频。

公开(公告)号：US08184693B2

公开(公告)日：2012-05-22

申请号：US12082561

申请日：2008-04-11

Applicant: Yi-Jen Chiu ,  Lidong Xu

Inventor： Yi-Jen Chiu ,  Lidong Xu

IPC: H04N7/12

CPC classification number: H04N19/36 ,  H04N19/117 ,  H04N19/30 ,  H04N19/46 ,  H04N19/61 ,  H04N19/80

Abstract: Adaptive filtering may be used to increase the quality of tone mapped, baseline layer encoded information. As a result, scalable video codecs may be implemented with improved picture quality in some embodiments.

Abstract translation: 自适应滤波可用于增加色调映射，基线层编码信息的质量。 结果，在一些实施例中，可升级的视频编解码器可以用改进的图像质量来实现。