公开(公告)号：US20110274158A1

公开(公告)日：2011-11-10

申请号：US13093068

申请日：2011-04-25

申请人： Chih-Ming Fu ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Chia-Yang Tsai ,  Shaw-Min Lei

发明人： Chih-Ming Fu ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Chia-Yang Tsai ,  Shaw-Min Lei

IPC分类号： H04N11/02

CPC分类号： H04N19/117 ,  H04N19/10 ,  H04N19/115 ,  H04N19/129 ,  H04N19/134 ,  H04N19/137 ,  H04N19/14 ,  H04N19/154 ,  H04N19/157 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/439 ,  H04N19/463 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

摘要： In a block-based motion compensated system, coding noises may arise due to lossy operations such as quantization. Deblocking is often used to alleviate visibility of coding artifacts by applying filtering across block boundaries adaptively. In the recent HEVC development, adaptive loop filtering (ALF) is being adopted to process deblocked reconstruction frames. Adaptive loop filtering is applied to reconstructed video data across multiple frames to reduce visibility of coding artifacts in the temporal domain. In a HEVC system, conventional ALF can be selectively turned ON or OFF for each block in a frame or a slice. The advanced ALF disclosed here allows a choice of multiple filter sets that can be applied to the reconstructed video data adaptively. Furthermore, the advanced ALF adopts a new unit for the filtering process to apply so that more flexible and/or localized processing can be provided. Furthermore, the advanced ALF allows a decoder to derive respective information for applying the filtering process without side information.

摘要翻译： 在基于块的运动补偿系统中，由于诸如量化的有损操作，可能产生编码噪声。 解块通常用于通过自适应地跨越块边界应用过滤来减轻编码伪像的可视性。 在最近的HEVC开发中，正在采用自适应环路滤波（ALF）来处理解块重建帧。 自适应环路滤波被应用于跨多帧的重建视频数据，以减少时域中编码伪像的可见性。 在HEVC系统中，对于帧或片中的每个块，可以选择性地将常规ALF打开或关闭。 这里公开的高级ALF允许选择可以自适应地应用于重建的视频数据的多个滤波器组。 此外，先进的ALF采用新的过滤单元进行应用，从而可以提供更灵活和/或本地化的处理。 此外，高级ALF允许解码器导出用于应用无侧信息的过滤处理的相应信息。

公开(公告)号：US20110222790A1

公开(公告)日：2011-09-15

申请号：US13044489

申请日：2011-03-09

申请人： Kai Zhang ,  Shaw-Min Lei

发明人： Kai Zhang ,  Shaw-Min Lei

IPC分类号： G06K9/36

CPC分类号： H04N19/463 ,  H04N19/11 ,  H04N19/196 ,  H04N19/70

摘要： A method for processing a 2N×2N block under intra-prediction includes: utilizing an intra-prediction unit for performing intra-prediction upon the 2N×2N block by utilizing a plurality of prediction modes, and accordingly generating a plurality of intra-prediction results respectively corresponding to the prediction modes, wherein N is a positive integer greater than four, and a number of the prediction modes is greater than four; and determining a target intra-prediction result from the intra-prediction results.

摘要翻译： 用于在帧内预测中处理2N×2N块的方法包括：利用帧内预测单元，通过利用多个预测模式对2N×2N块进行帧内预测，​​从而生成多个帧内预测结果 分别对应于预测模式，其中N是大于4的正整数，并且预测模式的数量大于4; 以及从所述帧内预测结果确定目标帧内预测结果。

公开(公告)号：US20110222607A1

公开(公告)日：2011-09-15

申请号：US12981430

申请日：2010-12-29

申请人： Jicheng An ,  Yongying Gao ,  Shaw-Min Lei

发明人： Jicheng An ,  Yongying Gao ,  Shaw-Min Lei

IPC分类号： H04N7/26

CPC分类号： H04N19/86 ,  H04N19/102 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

摘要： An exemplary deblocking filtering method includes checking if at least one of two adjacent blocks is an intra-coded block and accordingly generating a checking result; and applying a deblocking filtering scheme with a clipping range to the two adjacent blocks by a deblocking filtering circuit as long as the checking result indicates that at least one of the two adjacent blocks is the intra-coded block.

摘要翻译： 示例性的去块滤波方法包括：检查两个相邻块中的至少一个是帧内编码块，从而生成检查结果; 并且只要检查结果指示两个相邻块中的至少一个是帧内编码块，则通过去块滤波电路将具有削波范围的去块滤波方案应用于两个相邻块。

公开(公告)号：US20100124284A1

公开(公告)日：2010-05-20

申请号：US12274361

申请日：2008-11-20

申请人： Kun-Bin Lee ,  Shaw-Min Lei

发明人： Kun-Bin Lee ,  Shaw-Min Lei

IPC分类号： H04N7/30

CPC分类号： H04N19/16 ,  H04N19/129 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176

摘要： One scanning method of transform-based digital data processing includes: when processing data blocks, recording characteristics information for different block categories individually; conditionally adjusting scan orders of data processing of the block categories according to the characteristics information; and performing the data processing upon a current data block according to a scan order corresponding to a block category to which the current data block belongs. Another scanning method of transform-based digital data processing includes: recording characteristics information when processing data blocks; conditionally adjusting a scan order according to the characteristics information; keeping at least one position in the scan order fixed regardless of changes made to the scan order; and performing a data processing upon a current data block according to the scan order.

摘要翻译： 基于变换的数字数据处理的一种扫描方法包括：当处理数据块时，分别记录不同块类别的特征信息; 根据特征信息有条件地调整块类别的数据处理扫描顺序; 并且根据与当前数据块所属的块类别对应的扫描顺序对当前数据块执行数据处理。 基于变换的数字数据处理的另一种扫描方法包括：在处理数据块时记录特征信息; 根据特征信息有条件地调整扫描顺序; 保持扫描顺序中至少一个位置不受扫描顺序的影响; 并根据扫描顺序对当前数据块进行数据处理。

公开(公告)号：US20100040141A1

公开(公告)日：2010-02-18

申请号：US12192147

申请日：2008-08-15

申请人： Shaw-Min Lei ,  Yu-Wen Huang

发明人： Shaw-Min Lei ,  Yu-Wen Huang

IPC分类号： H04N7/26

CPC分类号： H04N19/00139 ,  H04N19/117 ,  H04N19/136 ,  H04N19/147 ,  H04N19/172 ,  H04N19/46 ,  H04N19/61 ,  H04N19/82

摘要： A coding system includes an inter prediction block, a transform and quantization block, an encoding unit, and a reconstruction loop with an adaptive restoration block. The inter prediction block performs prediction on a current frame, the transform and quantization block performs transform and quantization processes on prediction residues, and the reconstruction loop reconstructs the current frame to generate the restored reconstructed samples. The adaptive restoration block performs restoration on processed data by considering a plurality of candidate restoration methods, selects one of the candidate restoration methods as a final restoration method, and generates adaptive restoration information corresponding to the final restoration method. The encoding unit encodes the prediction information and adaptive restoration information to generate an encoded bitstream.

摘要翻译： 编码系统包括帧间预测块，变换和量化块，编码单元和具有自适应恢复块的重建循环。 帧间预测块对当前帧执行预测，变换和量化块对预测残差执行变换和量化处理，并且重建循环重建当前帧以生成恢复的重建样本。 自适应恢复块通过考虑多个候选恢复方法来执行对处理数据的恢复，选择候选恢复方法之一作为最终恢复方法，并且生成与最终恢复方法对应的自适应恢复信息。 编码单元对预测信息和自适应恢复信息进行编码，以生成编码比特流。

公开(公告)号：US06560370B2

公开(公告)日：2003-05-06

申请号：US10066369

申请日：2002-01-30

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.

公开(公告)号：US6111991A

公开(公告)日：2000-08-29

申请号：US008137

申请日：1998-01-16

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

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

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/50 ,  G06K9/36 ,  G06K9/38 ,  H04N7/12

CPC分类号： H04N19/19 ,  H04N19/126 ,  H04N19/147 ,  H04N19/17 ,  H04N19/176 ,  H04N19/186 ,  H04N19/30 ,  H04N19/61

摘要： A quantizer controller identifies a target bit value equal to a total number of bits available for encoding a frame. A total amount of distortion in the frame is modeled according to predicted quantization values for each one of the blocks. The predicted quantization values are characterized according to an amount of energy in each block and a number of bits available for encoding each block. Quantization values for each block are optimized by minimizing the modeled distortion in the frame subject to the constraint that the total number of bits for encoding the frame is equal to the target bit value. Each block is then encoded with the optimized quantization value.

摘要翻译： 量化器控制器识别等于可用于编码帧的总位数的目标比特值。 根据每个块的预测量化值对帧中的失真的总量进行建模。 预测的量化值根据每个块中的能量量和可用于对每个块进行编码的位数来表征。 通过最小化帧中的建模失真来优化每个块的量化值，受限于用于编码帧的总位数等于目标位值的约束。 然后用优化的量化值对每个块进行编码。

公开(公告)号：US10091515B2

公开(公告)日：2018-10-02

申请号：US14378949

申请日：2013-03-11

申请人： Shan Liu ,  Mei Guo ,  Tzu-Der Chuang ,  Shaw-Min Lei

发明人： Shan Liu ,  Mei Guo ,  Tzu-Der Chuang ,  Shaw-Min Lei

IPC分类号： H04N19/34 ,  H04N19/96 ,  H04N19/11 ,  H04N19/463 ,  H04N19/187 ,  H04N19/176 ,  H04N19/157 ,  H04N19/159

摘要： A method and apparatus of Intra mode coding for a scalable video coding system are disclosed. For a current Intra-coded block in the enhancement layer (EL), predictive coding is applied to the current Intra mode based on the base layer (BL) coding mode associated with the co-located block in the BL and neighboring coding modes associated with neighboring blocks of the current block in the EL. The neighboring blocks of the current block in the EL comprise a left block adjacent to a left side of the current block and a top block adjacent to a top side of the current block. One or more most probable modes (MPMs) can be derived from the neighboring coding modes and the BL coding mode, and the MPMs is then used for predictive coding of the current Intra mode.

公开(公告)号：US09877019B2

公开(公告)日：2018-01-23

申请号：US13825061

申请日：2011-12-31

申请人： Ching-Yeh Chen ,  Chih-Ming Fu ,  Chia-Yang Tsai ,  Yu-Wen Huang ,  Shaw-Min Lei

发明人： Ching-Yeh Chen ,  Chih-Ming Fu ,  Chia-Yang Tsai ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC分类号： H04N7/26 ,  H04N19/117 ,  H04N19/70 ,  H04N19/46 ,  H04N19/82

CPC分类号： H04N19/103 ,  H04N19/117 ,  H04N19/46 ,  H04N19/70 ,  H04N19/82

摘要： Implementations of the invention are provided in methods for filter-unit based in-loop filtering in a video decoder and encoder. In one implementation, filter parameters are selected from a filter parameter set for each filter based on a filter index. In another implementation, the picture is partitioned into filter units according to filter unit size, which can be selected between a default size and other size. When other size is selected, the filter unit size may be conveyed using direct size information or ratio information. In another implementation, a merge flag and a merge index are used to convey filter unit merge information. A method for filter-unit based in-loop filtering in a video encoder for color video is disclosed. In one embodiment, the method incorporates filter syntax in the video bitstream by interleaving the color-component filter syntax for the FUs.

公开(公告)号：US09817494B2

公开(公告)日：2017-11-14

申请号：US13439862

申请日：2012-04-05

申请人： Ping-Han Lee ,  Chia-Ping Chen ,  Yu-Ting Chen ,  Yu-Pao Tsai ,  Shaw-Min Lei

发明人： Ping-Han Lee ,  Chia-Ping Chen ,  Yu-Ting Chen ,  Yu-Pao Tsai ,  Shaw-Min Lei

IPC分类号： G06F3/038 ,  G06F3/03

CPC分类号： G06F3/038 ,  G06F3/0304

摘要： An exemplary method for determining a control output in a control domain includes: obtaining a control input of an input domain, wherein the control input includes a previous input value and a current input value; and dynamically adjusting a control resolution setting, and converting the control input of the input domain into the control output in the control domain according to the control resolution setting, wherein the control output includes a previous output value and a current output value corresponding to the previous input value and the current input value, respectively, the control resolution setting for the current input value is determined according to at least the previous input value, and the current output value is identical to the previous output value when the current input value and the previous input value are generated in response to a same user input.