公开(公告)号：WO2012154576A3

公开(公告)日：2013-05-02

申请号：PCT/US2012036562

申请日：2012-05-04

Applicant: QUALCOMM INC ,  CHONG IN SUK ,  VAN DER AUWERA GEERT ,  KARCZEWICZ MARTA

Inventor： CHONG IN SUK ,  VAN DER AUWERA GEERT ,  KARCZEWICZ MARTA

IPC: H04N7/26

CPC classification number: H04N19/105 ,  H04N19/117 ,  H04N19/14 ,  H04N19/167 ,  H04N19/176 ,  H04N19/196 ,  H04N19/463 ,  H04N19/70

Abstract: This disclosure describes techniques for performing sample adaptive offset signaling and coding in a video coding process. Techniques of the disclosure include both a merge-based and prediction-based signaling process for sample adaptive offset information (i.e., offset values and offset type). The techniques includes determining offset information for a current partition, comparing the offset information of the current partition with offset information of one or more neighbor partitions, coding a merge instruction in the case that the offset information of one of the one or more neighbor partitions is the same as the offset information of the current partition, and coding one of a plurality of prediction instructions in the case that the offset information of the one or more neighbor partitions is not the same as the offset information of the current partition.

Abstract translation: 本公开描述了在视频编码过程中执行采样自适应偏移信令和编码的技术。 本公开的技术包括用于样本自适应偏移信息（即，偏移值和偏移类型）的基于合并和基于预测的信令过程。 所述技术包括确定当前分区的偏移信息，将当前分区的偏移信息与一个或多个相邻分区的偏移信息进行比较，在一个或多个相邻分区之一的偏移信息为 与当前分区的偏移信息相同，并且在一个或多个相邻分区的偏移信息与当前分区的偏移信息不相同的情况下编码多个预测指令之一。

公开(公告)号：WO2013006446A9

公开(公告)日：2013-02-28

申请号：PCT/US2012044967

申请日：2012-06-29

Applicant: QUALCOMM INC ,  SOLE ROJALS JOEL ,  JOSHI RAJAN LAXMAN ,  KARCZEWICZ MARTA

Inventor： SOLE ROJALS JOEL ,  JOSHI RAJAN LAXMAN ,  KARCZEWICZ MARTA

IPC: H04N7/26

CPC classification number: H04N19/60 ,  H04N19/129 ,  H04N19/13 ,  H04N19/176 ,  H04N19/18 ,  H04N19/45 ,  H04N19/625 ,  H04N19/91 ,  H04N19/93 ,  H04W88/02

Abstract: Disclosed are techniques for coding coefficients of a video block having a nonsquare shape defined by a width and a height, comprising coding one or more of x- and y-coordinates that indicate a position of a last non-zero coefficient within the block according to an associated scanning order, including coding each coordinate by determining one or more contexts used to code the coordinate based on one of the width and the height that corresponds to the coordinate, and coding the coordinate by performing a context adaptive entropy coding process based on the contexts. Also disclosed are techniques for coding information that identifies positions of non-zero coefficients within the block, including determining one or more contexts used to code the information based on one or more of the width and the height, and coding the information by performing a context adaptive entropy coding process based on the contexts.

Abstract translation: 公开了用于对具有由宽度和高度限定的非正方形形状的视频块的系数进行编码的技术，该技术包括对x和y坐标中的一个或多个进行编码，所述一个或多个坐标指示块内最后一个非零系数的位置， 相关联的扫描顺序，包括通过基于对应于所述坐标的宽度和高度中的一个确定用于对坐标进行编码的一个或多个上下文来编码每个坐标，以及通过执行上下文自适应熵编码处理对坐标进行编码，所述上下文自适应熵编码处理基于 上下文。 还公开了用于编码识别块内的非零系数的位置的信息的技术，包括基于宽度和高度中的一个或多个确定用于对信息进行编码的一个或多个上下文，并且通过执行上下文对信息进行编码 基于上下文的自适应熵编码过程。

公开(公告)号：WO2012088453A3

公开(公告)日：2012-12-06

申请号：PCT/US2011066931

申请日：2011-12-22

Applicant: QUALCOMM INC ,  KARCZEWICZ MARTA ,  WANG XIANGLIN

Inventor： KARCZEWICZ MARTA ,  WANG XIANGLIN

IPC: H04N7/26

CPC classification number: H04N19/93 ,  H04N19/13 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18

Abstract: This disclosure describes techniques for coding transform coefficients for a block of video data. According to some aspects of this disclosure, an encoder or decoder may map between a code number cn and last_pos and level_ID syntax elements associated with a block of video data based on a scaling factor S. The scaling factor S may be based on a size of the block of video data being coded.

Abstract translation: 本公开描述了用于编码视频数据块的变换系数的技术。 根据本公开的一些方面，编码器或解码器可以基于缩放因子S在与编码数字cn和last_pos以及与视频数据块相关联的level_ID语法元素之间映射。缩放因子S可以基于 视频数据块被编码。

公开(公告)号：WO2011005572A3

公开(公告)日：2012-05-31

申请号：PCT/US2010039657

申请日：2010-06-23

Applicant: QUALCOMM INC ,  REZNIK YURIY ,  JOSHI RAJAN L ,  KARCZEWICZ MARTA

Inventor： REZNIK YURIY ,  JOSHI RAJAN L ,  KARCZEWICZ MARTA

IPC: G06F17/14 ,  H04N7/26

CPC classification number: H04N19/625 ,  G06F17/147 ,  H04N19/60

Abstract: In general, techniques are described for implementing an 8-point inverse discrete cosine transform (IDCT). An apparatus comprising an 8-point inverse discrete cosine transform (IDCT) hardware unit may implement these techniques to transform media data from a frequency domain to a spatial domain. The 8-point IDCT hardware unit includes an even portion comprising factors A, B that are related to a first scaled factor (µ) in accordance with a first relationship. The 8-point IDCT hardware unit also includes an odd portion comprising third, fourth, fifth and sixth internal factors (G, D, E, Z) that are related to a second scaled factor (?) in accordance with a second relationship. The first relationship relates the first scaled factor to the first and second internal factors. The second relationship relates the second scaled factor to the third, fourth, fifth and sixth internal factors.

Abstract translation: 通常，描述了用于实现8点逆离散余弦变换（IDCT）的技术。 包括8点逆离散余弦变换（IDCT）硬件单元的装置可实施这些技术以将媒体数据从频域转换为空间域。 8点IDCT硬件单元包括与根据第一关系的第一缩放因子（μ）相关的因子A，B的偶数部分。 8点IDCT硬件单元还包括与根据第二关系的第二缩放因子（α）相关的第三，第四，第五和第六内部因素（G，D，E，Z）的奇数部分。 第一个关系将第一个缩放因子与第一个和第二个内部因素相关联。 第二个关系将第二个比例因素与第三个，第四个，第五个和第六个内部因素联系起来。

公开(公告)号：WO2011100465A8

公开(公告)日：2012-03-29

申请号：PCT/US2011024393

申请日：2011-02-10

Applicant: QUALCOMM INC ,  CHEN YING ,  CHEN PEISONG ,  KARCZEWICZ MARTA

Inventor： CHEN YING ,  CHEN PEISONG ,  KARCZEWICZ MARTA

IPC: H04N7/26 ,  H04N7/50

CPC classification number: H04N19/132 ,  H04N19/107 ,  H04N19/109 ,  H04N19/119 ,  H04N19/176 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

Abstract: A video coder may utilize large macroblocks having more than 16x16 pixels. Syntax for the large macroblocks may define whether a bitstream includes large macroblocks, such as superblocks having 64x64 pixels or bigblocks having 32x32 pixels. The syntax may be included in a slice header or a sequence parameter set. The large macroblocks may also be encoded according to a large macroblock syntax. The bitstream may further include syntax data that indicates a level value based on whether the bitstream includes any of the large macroblocks, for example, as a smallest-sized luminance prediction block. A decoder may use the level value to determine whether the decoder is capable of decoding the bitstream.

Abstract translation: 视频编码器可以利用具有大于16×16像素的大宏块。 大宏块的语法可以定义比特流是否包括大宏块，例如具有64×64像素的超块或具有32×32像素的大块。 语法可以包括在片头或序列参数集中。 大宏块也可以根据大的宏块语法进行编码。 比特流还可以包括基于比特流是否包括任何大宏块，例如作为最小尺寸的亮度预测块来指示电平值的语法数据。 解码器可以使用电平值来确定解码器是否能够对比特流进行解码。

公开(公告)号：WO2010083438A8

公开(公告)日：2011-11-17

申请号：PCT/US2010021239

申请日：2010-01-15

Applicant: QUALCOMM INC ,  CHEN PEISONG ,  KARCZEWICZ MARTA ,  MOTTA GIOVANNI ,  YE YAN

Inventor： CHEN PEISONG ,  KARCZEWICZ MARTA ,  MOTTA GIOVANNI ,  YE YAN

IPC: H04N7/26

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/14 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/61 ,  H04N19/80 ,  H04N19/82

Abstract: This disclosure describes techniques associated with filtering of video data in a video encoding and/or decoding process. In accordance with this disclosure, filtering is applied at an encoder, and filter information is encoded in the bitstream to identify the filtering that was applied at the encoder. Different types of filtering may be applied based on an activity metric determined for the video data. Moreover, in accordance with this disclosure, the manner in which the filter information is encoded into the bitstream may be dependent on the activity metric. In particular, for a first range of the activity metric, one or more filters are encoded directly, and for a second range of the activity metric, one or more filters are predictively encoded.

Abstract translation: 本公开描述与视频编码和/或解码过程中的视频数据的过滤相关联的技术。 根据本公开，在编码器处应用滤波，并且将滤波器信息编码在比特流中以识别在编码器处应用的滤波。 可以基于为视频数据确定的活动度量来应用不同类型的过滤。 此外，根据本公开，过滤器信息被编码到比特流中的方式可以取决于活动度量。 特别地，对于活动度量的第一范围，一个或多个过滤器被直接编码，并且对于活动度量的第二范围，一个或多个过滤器被预测编码。

公开(公告)号：WO2011130334A2

公开(公告)日：2011-10-20

申请号：PCT/US2011032194

申请日：2011-04-12

Applicant: QUALCOMM INC ,  KARCZEWICZ MARTA ,  CHIEN WEI-JUNG ,  WANG XIANGLIN

Inventor： KARCZEWICZ MARTA ,  CHIEN WEI-JUNG ,  WANG XIANGLIN

IPC: H04N7/26

CPC classification number: H04N19/134 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/463

Abstract: This disclosure describes techniques for coding video data. As one example, this disclosure describes a coded block pattern (CBP) for a coding unit (CU) of video data that indicates whether or not each of a luminance component (Y), a first chrominance component (U), and a second chrominance component (V) include at least one non-zero coefficient. According to another example, this disclosure describes a CBP that indicates whether respective blocks of a CU include at least on non-zero coefficient. The CBP described herein may be mapped to a single variable length code (VLC) code word. The VLC code word may be used by a coder to code the CU of video data.

Abstract translation: 本公开描述了用于编码视频数据的技术。 作为一个示例，本公开描述了用于指示亮度分量（Y），第一色度分量（U）和第二色度（U））中的每一个的视频数据的编码单元（CU）的编码块模式（CBP） 分量（V）包括至少一个非零系数。 根据另一示例，本公开描述了CBP，其指示CU的相应块是否至少包括非零系数。 这里描述的CBP可以被映射到单个可变长度码（VLC）码字。 编码器可以使用VLC码字来对视频数据的CU进行编码。

公开(公告)号：WO2010039731A3

公开(公告)日：2010-06-17

申请号：PCT/US2009058839

申请日：2009-09-29

Applicant: QUALCOMM INC ,  CHEN PEISONG ,  YE YAN ,  KARCZEWICZ MARTA

Inventor： CHEN PEISONG ,  YE YAN ,  KARCZEWICZ MARTA

IPC: H04N7/26 ,  H04N7/50

CPC classification number: H04N19/103 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70

Abstract: Techniques are described for encoding and decoding digital video data using macroblocks that are larger than the macroblocks prescribed by conventional video encoding and decoding standards. For example, the techniques include encoding and decoding a video stream using macroblocks comprising greater than 16x16 pixels, for example, 64x64 pixels. Each macroblock may be partitioned into two or more partitions, and two or more of the partitions may be encoded using different modes. In one example, an apparatus includes a video encoder configured to receive a video block having a size of more than 16x16 pixels, partition the block into partitions, encode one of the partitions using a first encoding mode, encode another of the partitions using a second encoding mode different from the first encoding mode, and generate block-type syntax information that indicates the size of the block and identifies the partitions and the encoding modes used to encode the partitions.

Abstract translation: 描述了使用比常规视频编码和解码标准规定的宏块大的宏块对数字视频数据进行编码和解码的技术。 例如，这些技术包括使用包括大于16×16像素（例如，64×64像素）的宏块对视频流进行编码和解码。 每个宏块可以被划分成两个或更多个分区，并且可以使用不同的模式对两个或更多个分区进行编码。 在一个示例中，设备包括：视频编码器，被配置为接收具有大于16×16像素的大小的视频块，将块划分成分区，使用第一编码模式对所述分区中的一个编码，使用第二编码模式对另一分区进行编码 编码模式不同于第一编码模式，并且生成指示块的大小并识别用于对分区进行编码的分区和编码模式的块型语法信息。

公开(公告)号：WO2009049250A3

公开(公告)日：2009-05-28

申请号：PCT/US2008079636

申请日：2008-10-10

Applicant: QUALCOMM INC ,  YE YAN ,  KARCZEWICZ MARTA ,  PANCHAL RAHUL

Inventor： YE YAN ,  KARCZEWICZ MARTA ,  PANCHAL RAHUL

IPC: H04N7/26

CPC classification number: H04N19/12 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/50 ,  H04N19/593 ,  H04N19/70

Abstract: This disclosure describes techniques for adaptively coding video block header information based on previously encoded video blocks. A video encoder may adaptively select a coding table for use in encoding a syntax element of a current video block based on corresponding syntax elements of one or more previously encoded blocks. In one aspect, the video encoder may adaptively select the coding table for use in encoding a block type of the current block based on block types of one or more video blocks adjacent to the current video block, i.e., neighboring video blocks. The video encoder may also predict one or more other header syntax elements of the current block based on at least one of the previously encoded video blocks. If prediction is successful, the video encoder may encode a flag to indicate the success of prediction.

Abstract translation: 本发明描述用于基于先前经编码视频块自适应地译码视频块标头信息的技术。 视频编码器可基于一个或一个以上先前经编码块的对应语法元素自适应地选择用于编码当前视频块的语法元素的编码表。 在一个方面，视频编码器可基于与当前视频块相邻的一个或一个以上视频块（即，相邻视频块）的块类型自适应地选择用于编码当前块的块类型的编码表。 视频编码器还可基于先前经编码视频块中的至少一者来预测当前块的一个或一个以上其它标头语法元素。 如果预测成功，则视频编码器可编码标志以指示预测的成功。

公开(公告)号：WO2008157431A2

公开(公告)日：2008-12-24

申请号：PCT/US2008067020

申请日：2008-06-13

Applicant: QUALCOMM INC ,  YE YAN ,  KARCZEWICZ MARTA

Inventor： YE YAN ,  KARCZEWICZ MARTA

IPC: H04N7/26 ,  H04N7/30 ,  H04N7/34 ,  H04N7/36

CPC classification number: H04N19/625 ,  H04N19/103 ,  H04N19/11 ,  H04N19/12 ,  H04N19/122 ,  H04N19/129 ,  H04N19/13 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/18 ,  H04N19/19 ,  H04N19/196 ,  H04N19/197 ,  H04N19/42 ,  H04N19/46 ,  H04N19/463 ,  H04N19/48 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70

Abstract: This disclosure describes techniques for scanning coefficients of video blocks. In particular, the techniques of this disclosure adapt a scan order used to scan a two dimensional block of coefficients into a one dimensional coefficient vector based on statistics associated with one or more previously coded blocks. For example, statistics that indicate the likelihood that a given coefficient value in each position of a two dimensional block is zero or non zero may be collected for one or more previously coded blocks. At some point, an adjustment to the scan order can be made in order to better ensure that non-zero coefficients are grouped together near the front of the one dimensional coefficient vector, which can improve the effectiveness of entropy coding. The collection of statistics and adjustment of scan order may be made separately for each possible prediction mode.

Abstract translation: 本公开描述了用于扫描视频块的系数的技术。 特别地，本发明的技术根据与一个或多个先前编码的块相关联的统计数据，将用于将二维系数块扫描成一维系数向量的扫描顺序。 例如，可以为一个或多个先前编码的块收集指示二维块的每个位置中的给定系数值为零或非零的可能性的统计。 在某点上，可以对扫描顺序进行调整，以便更好地确保将非零系数分组在一维系数向量的前面附近，这可以提高熵编码的有效性。 扫描顺序的统计和调整的收集可以针对每个可能的预测模式分别进行。