公开(公告)号：US20110116544A1

公开(公告)日：2011-05-19

申请号：US12811701

申请日：2010-06-09

申请人： Chih-Ming Fu ,  Yu-Wen Huang ,  Shaw-Min Lei

发明人： Chih-Ming Fu ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC分类号： H04N7/32 ,  H04N7/50

CPC分类号： H04N19/86 ,  H04N19/11 ,  H04N19/117 ,  H04N19/147 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82

摘要： A method of intra prediction includes the steps of: receiving a video input having a plurality of blocks; encoding and reconstructing the plurality of blocks one by one; after encoding and reconstructing a designated block of the plurality of blocks to generate a designated reconstructed block, performing a deblocking operation upon the designated reconstructed block so as to generate a reference block with at least one sample being deblocked; and performing an intra prediction operation upon a current block by using samples of the reference block generated by the deblocking operation.

摘要翻译： 帧内预测方法包括以下步骤：接收具有多个块的视频输入; 一个接一个地编码和重建多个块; 在对所述多个块的指定块进行编码和重建以生成指定的重构块之后，对所述指定的重构块执行去块操作，以便生成具有至少一个样本被去块的参考块; 以及通过使用通过解块操作生成的参考块的样本，对当前块执行帧内预测操作。

公开(公告)号：US20110026847A1

公开(公告)日：2011-02-03

申请号：US12534154

申请日：2009-08-02

申请人： Yu-Pao Tsai ,  Yu-Wen Huang ,  Ying-Jui Chen ,  Shaw-Min Lei

发明人： Yu-Pao Tsai ,  Yu-Wen Huang ,  Ying-Jui Chen ,  Shaw-Min Lei

IPC分类号： G06K9/40

CPC分类号： G06T5/002 ,  G06T5/20 ,  G06T2207/20012

摘要： A region-based method for iterative regularization image enhancement, includes: for each region of a plurality of regions of an image, performing at least one gradient calculation of an objective function of a latest representative function of the region and updating the latest representative function according to the gradient calculation; and for the region of the plurality of regions of the image, when at least one predetermined convergence criterion is not satisfied, iteratively updating the latest representative function according to at least one gradient calculation of the same objective function of the latest representative function. In particular, the region-based method further includes: for the region of the plurality of regions of the image, when the predetermined convergence criterion is satisfied, performing postprocessing on the latest representative function of the region to generate an iteratively regularized partial image corresponding to the region. An associated region-based apparatus and processing circuit are further provided.

摘要翻译： 一种用于迭代正则化图像增强的基于区域的方法包括：对于图像的多个区域中的每个区域，执行所述区域的最新代表性函数的目标函数的至少一个梯度计算，并且根据 到梯度计算; 并且对于图像的多个区域的区域，当不满足至少一个预定收敛标准时，根据最新代表函数的相同目标函数的至少一个梯度计算迭代地更新最新代表函数。 特别地，基于区域的方法还包括：对于图像的多个区域的区域，当满足预定的收敛标准时，对该区域的最新的代表性函数执行后处理，以生成对应于 该区域。 还提供了一种基于区域的设备和处理电路。

公开(公告)号：US06625321B1

公开(公告)日：2003-09-23

申请号：US09016571

申请日：1998-01-30

申请人： Jin Li ,  Shaw-Min Lei

发明人： Jin Li ,  Shaw-Min Lei

IPC分类号： G06K936

CPC分类号： H04N19/61 ,  H04N19/10 ,  H04N19/115 ,  H04N19/13 ,  H04N19/146 ,  H04N19/147 ,  H04N19/63

摘要： A rate-distortion optimized embedding (RDE) coder optimizes rate-distortion performance by coding information bits in the order of their R-D slope. RDE allocates the available coding bits first to the information bit with the steepest R-D slope, which indicates the largest distortion decrease per coding bit. The resultant RDE bitstream can be truncated at any point and still maintain an optimal R-D performance. To avoid the overhead of coding order transmission, an expected R-D slope is calculated by both the encoder and the decoder from previous RDE coded bits. A probability estimation table from a QM arithmetic coder allows the R-D slope to be derived using a lookup table operation. The rate-distortion optimised embedding (RDE) coder significantly improves the coding efficiency over a wide range of bit rates.

摘要翻译： 速率失真优化嵌入（RDE）编码器以其R-D斜率的顺序对信息位进行编码来优化速率失真性能。 RDE首先将可用的编码位分配给具有最陡的R-D斜率的信息位，这表示每编码位最大的失真减小。 所得到的RDE比特流可以在任何点被截断，并且仍然保持最佳的R-D性能。 为了避免编码顺序传输的开销，由编码器和解码器由先前的RDE编码位计算预期的R-D斜率。 来自QM算术编码器的概率估计表允许使用查找表操作导出R-D斜率。 速率失真优化嵌入（RDE）编码器在宽范围的比特率下显着提高了编码效率。

公开(公告)号：US06553148B2

公开(公告)日：2003-04-22

申请号：US09862399

申请日：2001-05-21

申请人： Wenjun Zeng ,  Jin Li ,  Shaw-Min Lei

发明人： Wenjun Zeng ,  Jin Li ,  Shaw-Min Lei

IPC分类号： G06K936

CPC分类号： H04N19/649 ,  H04N19/115 ,  H04N19/122 ,  H04N19/146 ,  H04N19/147 ,  H04N19/17 ,  H04N19/20 ,  H04N19/63 ,  H04N19/635 ,  H04N19/96

摘要： An adaptive image coding method and system are disclosed. The system accepts an input image, divides it into image segments, and assigns each segment to a wavelet transform filter from a bank of such filters for transformation. The bank preferably comprises filters adapted for different types of image content, e.g., sharp edges, slowly-varying contours, etc. Filters are preferably assigned so as to produce minimal distortion for their assigned image segments at a given target bit rate, each filter produces transform coefficients for its segment using scale and subband settings common to the entire image. The valid coefficients for each segment are then combined in a composite wavelet coefficient image, which resembles a single wavelet transform of an entire image—although different filters are used to create different portions of the coefficient image. The composite image allows joint, rate-distortion optimized coding for a segmented image. Joint coding allocates bits between the transforms of the image segments optimally, and produces an easily scaleable bitstream.

摘要翻译： 公开了一种自适应图像编码方法和系统。 系统接受输入图像，将其分割成图像段，并将每个分段分配给一个这样的滤波器组的小波变换滤波器进行变换。 银行优选地包括适用于不同类型的图像内容的滤波器，例如尖锐边缘，缓慢变化的轮廓等。优选地分配滤波器以便以给定的目标比特率为其分配的图像段产生最小的失真，每个滤波器产生 使用与整个图像共同的比例和子带设置来对其片段进行变换系数。 然后将每个段的有效系数组合在复合小波系数图像中，其类似于整个图像的单个小波变换 - 尽管使用不同的滤波器来创建系数图像的不同部分。 复合图像允许对分割图像进行联合，速率失真优化编码。 联合编码最佳地分配图像段的变换之间的比特，并产生容易扩展的比特流。

公开(公告)号：US06396956B1

公开(公告)日：2002-05-28

申请号：US09502166

申请日：2000-02-11

申请人： Jordi Ribas-Corbera ,  Shaw-Min Lei

发明人： Jordi Ribas-Corbera ,  Shaw-Min Lei

IPC分类号： G06K946

CPC分类号： G06T9/00

摘要： Block and frame skipping decides which image regions, blocks or frames in a video frame or series of frames should be encoded. Block skipping detects in advance which of the blocks in a video frame will produce little or no bits, so that the encoder can skip the encoding process for these blocks. Block skipping uses an iterative procedure to determine the optimal energy threshold value for each image frame. All the image blocks whose pixel energy is below the optimal threshold for the frame are skipped. Frame skipping predicts a distortion or image quality value for each frame. If some frames have a predicted image quality smaller than a preset value, these frames are allocated more bits and if, as a result, too few bits are left for future frames, the latter frames are skipped. This selective frame skipping guarantees that the quality of the non-skipped frames is above the preset value.

摘要翻译： 块和帧跳过决定视频帧或一系列帧中的哪些图像区域，块或帧应被编码。 块跳过预先检测视频帧中的哪个块将产生很少或不产生位，使得编码器可以跳过这些块的编码处理。 块跳过使用迭代过程来确定每个图像帧的最佳能量阈值。 像素能量低于帧的最佳阈值的所有图像块都被跳过。 帧跳过预测每个帧的失真或图像质量值。 如果一些帧具有小于预设值的预测图像质量，则这些帧被分配更多的比特，并且如果结果为未来的帧留下太少的比特，则后一帧被跳过。 这种选择性跳帧保证非跳过帧的质量高于预设值。

公开(公告)号：US06233357B1

公开(公告)日：2001-05-15

申请号：US09110979

申请日：1998-07-07

申请人： Jin Li ,  Shaw-Min Lei

发明人： Jin Li ,  Shaw-Min Lei

IPC分类号： G06K936

CPC分类号： H04N19/649 ,  H04N19/63

摘要： An arbitrary shape wavelet transform with phase alignment (ASWP) is used to transform an arbitrary shaped object in an image. The phase of an odd tap wavelet filter is aligned so that a low pass filter is always centered at an even index, and a high pass filter is always centered at an odd index. The phase of an even tap wavelet filter is aligned so that the low pass filter and the high pass filter are both centered at index 2i+0.5, i.e., a half index past the even index. The objects for odd tap wavelet filters are each separately symmetrically extended by mirroring the objects from the opposite ends but not mirroring the end pixels. The objects for the even tap filter is symmetrically extended by mirroring the pixels from the opposite ends of the objects including mirroring the end pixels. The phase adjusted-symmetrically extended objects are then transformed.

摘要翻译： 使用具有相位对准（ASWP）的任意形状小波变换来变换图像中的任意成形对象。 对齐抽头小波滤波器的相位被对准，使得低通滤波器总是以均匀的索引为中心，并且高通滤波器总是以奇数索引为中心。 对均匀抽头小波滤波器的相位进行比对，使得低通滤波器和高通滤波器都以索引2i + 0.5为中心，即超过偶数指数的一半索引。 奇数抽头小波滤波器的对象通过从相对端镜像对象而不是镜像终端像素而分别对称地扩展。 偶数抽头滤波器的对象通过镜像来自对象的相对端的像素对称地扩展，包括镜像终端像素。 然后相位调整对称扩展的对象被变换。

公开(公告)号：US5298896A

公开(公告)日：1994-03-29

申请号：US31421

申请日：1993-03-15

申请人： Shaw-Min Lei ,  Ming-Ting Sun ,  Kou-Hu Tzou

发明人： Shaw-Min Lei ,  Ming-Ting Sun ,  Kou-Hu Tzou

IPC分类号： G06T9/00 ,  H03M7/40 ,  H03M7/30

CPC分类号： G06T9/005 ,  H03M7/4006

摘要： Method and system for high order conditional entropy coding utilizing an incremental-tree-extension technique to design a conditional tree for the coding. For complexity reduction, code table reduction and non-uniform quantization of conditioning symbols or pixels is provided. A pattern matching technique is provided for fast conditioning state extraction, and a multistage pipelined structure is provided to handle the case of a large number of conditioning pixels. Using the complexity reduction techniques and the hardware structures, it is possible to implement practical high order conditional entropy codecs using current low-cost VLSI (Very Large Scale Integration) technology.

摘要翻译： 利用增量树扩展技术设计用于编码的条件树的高阶条件熵编码方法和系统。 为了复杂度降低，提供了代码表缩减和调节符号或像素的不均匀量化。 提供了用于快速调节状态提取的模式匹配技术，并且提供了多级流水线结构来处理大量调节像素的情况。 使用复杂度降低技术和硬件结构，可以使用当前的低成本VLSI（超大规模集成）技术实现实用的高阶条件熵编解码器。

公开(公告)号：US09860528B2

公开(公告)日：2018-01-02

申请号：US14005555

申请日：2012-05-31

申请人： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Yu-Wen Huang ,  Shaw-Min Lei

发明人： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC分类号： H04N7/12 ,  H04N19/107 ,  H04N19/52 ,  H04N19/119 ,  H04N19/463 ,  H04N19/33 ,  H04N19/51 ,  H04N19/30 ,  H04N19/517

CPC分类号： H04N19/51 ,  H04N19/119 ,  H04N19/30 ,  H04N19/33 ,  H04N19/463 ,  H04N19/517 ,  H04N19/52

摘要： A method and apparatus for scalable video coding are disclosed, wherein the video data is configured into a Base Layer (BL) and an Enhancement Layer (EL) and wherein the EL has higher spatial resolution or better video quality than the BL. According to embodiments of the present invention, information from the base layer is exploited for coding the enhancement layer. The information coding for the enhancement layer includes CU structure, motion vector predictor (MVP) information, MVP/merge candidates, intra prediction mode, residual quadtree information, texture information, residual information, context adaptive entropy coding, Adaptive Lop Filter (ALF), Sample Adaptive Offset (SAO), and deblocking filter.

公开(公告)号：US09525884B2

公开(公告)日：2016-12-20

申请号：US12978490

申请日：2010-12-24

申请人： Yu-Wen Huang ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Chih-Wei Hsu ,  Shan Liu ,  Shaw-Min Lei

发明人： Yu-Wen Huang ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Chih-Wei Hsu ,  Shan Liu ,  Shaw-Min Lei

IPC分类号： H04N19/86 ,  H04N19/70 ,  H04N19/436 ,  H04N19/42 ,  H04N19/174 ,  H04N19/117 ,  H04N19/136 ,  H04N19/82 ,  H04N19/13 ,  H04N7/26 ,  H04N19/115 ,  H04N19/61

CPC分类号： H04N19/439 ,  H04N19/115 ,  H04N19/117 ,  H04N19/136 ,  H04N19/174 ,  H04N19/436 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86

摘要： An apparatus and method for video coding having intra-slice deblocking, intra-slice adaptive loop filter, and intra-slice adaptive offset are disclosed. In a video coding system, a picture is often divided into slices and each slice is independently processed so that errors or missing data from one slice cannot propagate to any other slice within the picture. In the recent high efficiency video coding (HEVC) development, deblock filtering (DF), adaptive loop filter (ALF) and adaptive offset (AO) may be applied to reconstructed slices. When the processing is applied across slice boundaries, it may rely on pixels outside the current slice and cause dependency of the current slice on other slice(s). Consequently, the DF/ALF/AO processing on a reconstructed slice may have to wait until the reconstructed slices that it is dependent from complete the DF/ALF/AO processing. To overcome the slice boundary issue, intra-slice DF/ALF/AO is developed that does not rely on any pixel outside the currently slice. An optional slice boundary filter may be applied to slice boundaries after all slices are processed by the intra-slice DF/ALF/AO.

摘要翻译： 公开了一种具有片内解块，片内自适应环路滤波器和片内自适应偏移的视频编码的装置和方法。 在视频编码系统中，图像通常被分成片，并且每个片被独立地处理，使得来自一个片的错误或丢失的数据不能传播到图片内的任何其他片。 在最近的高效率视频编码（HEVC）开发中，解块滤波（DF），自适应环路滤波器（ALF）和自适应偏移（AO）可以应用于重构的片段。 当跨越切片边界应用处理时，它可以依赖于当前切片外部的像素，并且导致当前切片对其他切片的依赖。 因此，在重构的切片上的DF / ALF / AO处理可能必须等待直至重构的切片依赖于完成DF / ALF / AO处理。 为了克服切片边界问题，开发了片内DF / ALF / AO，其不依赖于当前切片之外的任何像素。 在片内DF / ALF / AO处理所有片段之后，可选择的片边界滤波器可应用于片边界。

公开(公告)号：US09124898B2

公开(公告)日：2015-09-01

申请号：US13039555

申请日：2011-03-03

申请人： Yu-Pao Tsai ,  Jian-Liang Lin ,  Yu-Wen Huang ,  Shaw-Min Lei

发明人： Yu-Pao Tsai ,  Jian-Liang Lin ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC分类号： H04N7/26 ,  H04N19/577 ,  H04N19/51 ,  H04N19/52 ,  H04N19/61

CPC分类号： H04N19/577 ,  H04N19/109 ,  H04N19/176 ,  H04N19/52 ,  H04N19/61

摘要： An apparatus and method for motion vector prediction for a current block in a picture are disclosed. In video coding systems, the spatial and temporal redundancy is exploited using spatial and temporal prediction to reduce the information to be transmitted. Motion Vector Prediction (MVP) has been used to further conserve the bitrate associated with motion vector. In conventional temporal MVP, the predictor is often based on a single candidate such as the co-located motion vector in the previous frame/picture. If the co-located motion vector in the previous frame/picture does not exist, the predictor for the current block is not available. A technique for improved MVP is disclosed where the MVP utilized multiple candidates based on co-located motion vectors from future and/or past reference pictures. The candidates are arranged according to priority order to provide better availability of MVP and also to provide more accurate prediction. Furthermore, the MVP technique disclosed can be operated in a closed-loop fashion so that no additional side information or minimum additional side information is required.

摘要翻译： 公开了一种用于图像中当前块的运动矢量预测的装置和方法。 在视频编码系统中，使用空间和时间预测来利用空间和时间冗余来减少要发送的信息。 运动矢量预测（MVP）已被用于进一步节省与运动矢量相关的比特率。 在传统的时间MVP中，预测器通常基于诸如前一帧/图像中的同位置运动矢量的单个候选。 如果前一帧/图像中的同位置运动矢量不存在，则当前块的预测器不可用。 公开了一种用于改进MVP的技术，其中MVP基于来自未来和/或过去的参考图片的同位置运动矢量利用多个候选。 候选人按照优先顺序排列，以提供更好的MVP可用性，并提供更准确的预测。 此外，所公开的MVP技术可以以闭环方式操作，使得不需要额外的辅助信息或最小的附加侧信息。