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41. 发明申请

US20130287111A1 LOW MEMORY ACCESS MOTION VECTOR DERIVATION 审中-公开
标题翻译：低存储器访问运动矢量派生
公开(公告)号：US20130287111A1
公开(公告)日：2013-10-31
申请号：US13976778
申请日：2011-06-29
申请人： Lidong Xu , Yi-Jen Chiu , Wenhao Zhang
发明人： Lidong Xu , Yi-Jen Chiu , Wenhao Zhang
IPC分类号： H04N7/36
CPC分类号： H04N19/513 , H04N19/44 , H04N19/57
摘要： Systems, devices and methods for performing low memory access candidate-based decoder-side motion vector determination (DMVD) are described. The number of candidate motion vectors (MVs) searched may be confined by limiting the range of pixels associated with candidate MVs to a pre-defined window. Reference windows may then be loaded into memory only once for both DMVD and motion compensation (MC) processing. Reference window size may be adapted to different PU sizes. Further, various schemes are described for determining reference window positions.
摘要翻译：描述用于执行低存储器访问候选的解码器侧运动矢量确定（DMVD）的系统，设备和方法。搜索的候选运动矢量（MV）的数量可以通过将与候选MV相关联的像素的范围限制为预定窗口来限制。然后，对于DMVD和运动补偿（MC）处理，参考窗口可以仅被加载到存储器中一次。参考窗口尺寸可以适应不同的PU尺寸。此外，描述了用于确定参考窗口位置的各种方案。

42. 发明申请

US20130188692A1 SYSTEMS, METHODS, AND COMPUTER PROGRAM PRODUCTS FOR TRANSFORM COEFFICIENT SUB-SAMPLING 有权
标题翻译：用于变换系数子采样的系统，方法和计算机程序产品
公开(公告)号：US20130188692A1
公开(公告)日：2013-07-25
申请号：US13709780
申请日：2012-12-10
申请人： Yi-Jen Chiu , Wenhao Zhang , Lidong Xu , Yu Han , Hong Jiang
发明人： Yi-Jen Chiu , Wenhao Zhang , Lidong Xu , Yu Han , Hong Jiang
IPC分类号： H04N7/26
CPC分类号： H04N19/60 , H04N19/132 , H04N19/154 , H04N19/159 , H04N19/176 , H04N19/48
摘要： Video compression encoding includes intra and inter prediction to reduce spatial and temporal redundancies in video. Prediction results or residuals represent differences between original video pixel values and predicted pixel values. The prediction residuals may be transformed into coefficients, referred to as transform coefficients, in the frequency domain. The transform coefficients may be quantized and entropy encoded. The transform coefficients can be sub-sampled prior to quantization to reduce their number. For example, sub-sampling may reduce more high frequency components than low frequency components represented in the transform coefficients. Therefore, sub-sampling reduces the number of transform coefficients that need to be quantized, reduces quantization complexity, and correspondingly increases throughput in the encoding.
摘要翻译：视频压缩编码包括帧内和帧间预测，以减少视频中的空间和时间冗余。预测结果或残差表示原始视频像素值与预测像素值之间的差异。预测残差可以被变换为频域中被称为变换系数的系数。可以对变换系数进行量化和熵编码。变换系数可以在量化之前进行子采样以减少它们的数量。例如，子采样可以减少比变换系数中表示的低频分量更多的高频分量。因此，子采样减少了需要量化的变换系数的数量，降低了量化复杂度，并且相应地增加了编码中的吞吐量。

43. 发明申请

US20130136174A1 LUMA-BASED CHROMA INTRA PREDICTION 有权
标题翻译：基于LUMA的色谱预测
公开(公告)号：US20130136174A1
公开(公告)日：2013-05-30
申请号：US13512992
申请日：2011-07-12
申请人： Lidong Xu , Yu Han , Yi-Jen Chiu , Wenhao Zhang
发明人： Lidong Xu , Yu Han , Yi-Jen Chiu , Wenhao Zhang
IPC分类号： H04N7/26 , H04N7/32
CPC分类号： H04N19/00569 , H04N19/105 , H04N19/11 , H04N19/186 , H04N19/61 , H04N19/82
摘要： 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.
摘要翻译：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。

44. 发明授权

US09591326B2 Power efficient motion estimation techniques for video encoding 有权
标题翻译：用于视频编码的功率有效的运动估计技术
公开(公告)号：US09591326B2
公开(公告)日：2017-03-07
申请号：US13638628
申请日：2010-03-31
申请人： Lidong Xu , Yi-Jen Chiu , Hong Jiang
发明人： Lidong Xu , Yi-Jen Chiu , Hong Jiang
IPC分类号： H04N19/53 , H04N19/30 , H04N19/187 , H04N19/37 , H04N19/33 , H04N19/57 , H04N19/105 , H04N19/174 , H04N19/61 , H04N19/176 , H04N19/573 , H04N19/109
CPC分类号： H04N19/53 , H04N19/105 , H04N19/109 , H04N19/174 , H04N19/176 , H04N19/187 , H04N19/30 , H04N19/33 , H04N19/37 , H04N19/57 , H04N19/573 , H04N19/61
摘要： Adaptive control can use hierarchical motion estimation (HME) and/or multiple reference motion estimation (MRME) for the motion estimation of current encoding blocks. Both HME and MRME are allowed in the motion estimation to achieve a high coding gain. Control consists of slice level control and macro-block (MB) level control. A slice is one or more contiguous macroblocks. In slice level control, it is decided to use only one reference frame or use multiple reference frames to coding current slice based on the motion vectors obtained in coarse level motion estimation. In MB level control, it is decided to perform MRME or perform HME for the MB and its subblocks based on the coarse level motion vectors of the MB.
摘要翻译：自适应控制可以对当前编码块的运动估计使用分层运动估计（HME）和/或多参考运动估计（MRME）。在运动估计中允许HME和MRME两者实现高编码增益。控制由片级控制和宏块（MB）级控制组成。切片是一个或多个连续的宏块。在片级控制中，决定仅使用一个参考帧或者使用多个参考帧来基于在粗略级运动估计中获得的运动矢量对当前片进行编码。在MB级别控制中，决定执行MRME或基于MB的粗略级别运动向量对MB及其子块执行HME。

45. 发明申请

US20100008417A1 Video encoding techniques 有权
标题翻译：视频编码技术
公开(公告)号：US20100008417A1
公开(公告)日：2010-01-14
申请号：US12217805
申请日：2008-07-09
申请人： Lidong Xu , Yi-Jen Chiu
发明人： Lidong Xu , Yi-Jen Chiu
IPC分类号： H04B1/66
CPC分类号： H04N19/82 , H04N19/117 , H04N19/147 , H04N19/17 , H04N19/46 , H04N19/61
摘要： 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.
摘要翻译：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。

46. 发明授权

US08620103B2 In-loop adaptive wiener filter for video coding and decoding 有权
公开(公告)号：US08620103B2
公开(公告)日：2013-12-31
申请号：US13466243
申请日：2012-05-08
申请人： Yi-Jen Chiu , Lidong Xu
发明人： Yi-Jen Chiu , Lidong Xu
IPC分类号： G06K9/40
CPC分类号： H04N19/117 , H04N19/136 , H04N19/157 , H04N19/17 , H04N19/172 , H04N19/176 , H04N19/177 , H04N19/18 , H04N19/182 , H04N19/61 , H04N19/65 , H04N19/82 , H04N19/86
摘要： A video encoder may use an adaptive Wiener filter inside the core video encoding loop to improve coding efficiency. In one embodiment, the Wiener filter may be on the input to a motion estimation unit and, in another embodiment, it may be on the output of a motion compensation unit. The taps for the Wiener filter may be determined based on characteristics of at least a region of pixel intensities within a picture. Thus, the filtering may be adaptive in that it varies based on the type of video being processed.

47. 发明申请

US20120224622A1 Adaptive Filtering for Bit-Depth Scalable Video Codec 有权
标题翻译：位深可扩展视频编解码器的自适应滤波
公开(公告)号：US20120224622A1
公开(公告)日：2012-09-06
申请号：US13466256
申请日：2012-05-08
申请人： Yi-Jen Chiu , Lidong Xu
发明人： Yi-Jen Chiu , Lidong Xu
IPC分类号： H04N7/26
CPC分类号： H04N19/36 , H04N19/117 , H04N19/30 , H04N19/46 , H04N19/61 , H04N19/80
摘要： 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.
摘要翻译：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。

48. 发明授权

US08195001B2 In-loop adaptive wiener filter for video coding and decoding 有权
标题翻译：用于视频编码和解码的环路自适应维纳滤波器
公开(公告)号：US08195001B2
公开(公告)日：2012-06-05
申请号：US12082182
申请日：2008-04-09
申请人： Yi-Jen Chiu , Lidong Xu
发明人： Yi-Jen Chiu , Lidong Xu
IPC分类号： G06K9/40
CPC分类号： H04N19/117 , H04N19/136 , H04N19/157 , H04N19/17 , H04N19/172 , H04N19/176 , H04N19/177 , H04N19/18 , H04N19/182 , H04N19/61 , H04N19/65 , H04N19/82 , H04N19/86
摘要： A video encoder may use an adaptive Wiener filter inside the core video encoding loop to improve coding efficiency. In one embodiment, the Wiener filter may be on the input to a motion estimation unit and, in another embodiment, it may be on the output of a motion compensation unit. The taps for the Wiener filter may be determined based on characteristics of at least a region of pixel intensities within a picture. Thus, the filtering may be adaptive in that it varies based on the type of video being processed.
摘要翻译：视频编码器可以在核心视频编码环路内使用自适应维纳滤波器来提高编码效率。在一个实施例中，维纳滤波器可以在运动估计单元的输入上，并且在另一个实施例中，其可以在运动补偿单元的输出上。用于维纳滤波器的抽头可以基于图像内的像素强度的至少一个区域的特性来确定。因此，滤波可以是适应性的，因为它根据正在处理的视频的类型而变化。

49. 发明申请

US20090262798A1 Tone mapping for bit-depth scalable video codec 有权
标题翻译：用于位深度可缩放视频编解码器的色调映射
公开(公告)号：US20090262798A1
公开(公告)日：2009-10-22
申请号：US12148131
申请日：2008-04-16
申请人： Yi-Jen Chiu , Lidong Xu , Hong Jiang
发明人： Yi-Jen Chiu , Lidong Xu , Hong Jiang
IPC分类号： H04B1/66
CPC分类号： H04N19/80 , H04N19/117 , H04N19/14 , H04N19/182 , H04N19/184 , H04N19/186 , H04N19/187 , H04N19/30 , H04N19/44 , H04N19/46
摘要： A scalable video codec may convert lower bit depth video to higher bit depth video using decoded lower bit depth video for tone mapping and tone mapping derivation. The conversion can also use the filtered lower bit depth video for tone mapping and tone mapping derivation.
摘要翻译：可扩展视频编解码器可以使用解码的低位深度视频将低位深度视频转换为较高位深度视频，用于色调映射和色调映射推导。转换也可以使用滤波的较低位深度视频进行色调映射和色调映射推导。

50. 发明申请

US20090257670A1 In-loop adaptive wiener filter for video coding and decoding 有权
标题翻译：用于视频编码和解码的环路自适应维纳滤波器
公开(公告)号：US20090257670A1
公开(公告)日：2009-10-15
申请号：US12082182
申请日：2008-04-09
申请人： Yi-Jen Chiu , Lidong Xu
发明人： Yi-Jen Chiu , Lidong Xu
IPC分类号： H04N7/24
CPC分类号： H04N19/117 , H04N19/136 , H04N19/157 , H04N19/17 , H04N19/172 , H04N19/176 , H04N19/177 , H04N19/18 , H04N19/182 , H04N19/61 , H04N19/65 , H04N19/82 , H04N19/86
摘要： A video encoder may use an adaptive Wiener filter inside the core video encoding loop to improve coding efficiency. In one embodiment, the Wiener filter may be on the input to a motion estimation unit and, in another embodiment, it may be on the output of a motion compensation unit. The taps for the Wiener filter may be determined based on characteristics of at least a region of pixel intensities within a picture. Thus, the filtering may be adaptive in that it varies based on the type of video being processed.
摘要翻译：视频编码器可以在核心视频编码环路内使用自适应维纳滤波器来提高编码效率。在一个实施例中，维纳滤波器可以在运动估计单元的输入上，并且在另一个实施例中，其可以在运动补偿单元的输出上。用于维纳滤波器的抽头可以基于图像内的像素强度的至少一个区域的特性来确定。因此，滤波可以是适应性的，因为它根据正在处理的视频的类型而变化。

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