公开(公告)号：ZA201403629B

公开(公告)日：2017-08-30

申请号：ZA201403629

申请日：2014-05-19

Applicant: QUALCOMM INC

Inventor： KARCZEWICZ MARTA ,  WANG XIANGLIN ,  VAN DER AUWERA GEERT

公开(公告)号：AU2012325950B2

公开(公告)日：2016-04-21

申请号：AU2012325950

申请日：2012-10-19

Applicant: QUALCOMM INC

Inventor： VAN DER AUWERA GEERT ,  KARCZEWICZ MARTA ,  WANG XIANGLIN

IPC: H04N19/00 ,  H04N19/61 ,  H04N19/82

Abstract: Techniques for coding video data include coding a plurality of blocks of video data, wherein at least one block of the plurality of blocks of video data is coded using a coding mode that is one of an intra pulse code modulation (IPCM) coding mode and a lossless coding mode. In some examples, the lossless coding mode may use prediction. The techniques further include assigning a non-zero quantization parameter (QP) value for the at least one block coded using the coding mode. The techniques also include performing deblocking filtering on one or more of the plurality of blocks of video data based on the coding mode used to code the at least one block and the assigned non-zero QP value for the at least one block.

公开(公告)号：CA2953711A1

公开(公告)日：2016-02-04

申请号：CA2953711

申请日：2015-07-29

Applicant: QUALCOMM INC

Inventor： VAN DER AUWERA GEERT ,  COBAN MUHAMMED ZEYD ,  KARCZEWICZ MARTA ,  LEUNG NIKOLAI KONRAD

IPC: H04L47/56 ,  H04L47/2416

Abstract: In an example, a method of processing data includes transmitting data over a network at a first bit rate, identifying a reduction in a network link rate of the network from a first network link rate to a second network link rate, and in response to identifying the reduction in the network link rate, determining a recovery bit rate at which to transmit the data over the network, where the recovery bit rate is less than the second network link rate. The method also includes determining a buffering duration based on a difference between a time of the identification of the reduction in the network link rate and an estimated actual time of the reduction in the network link rate, and determining a recovery rate duration during which to transmit the data at the recovery bit rate based on the recovery bit rate and the buffering duration.

公开(公告)号：AU2012328924B2

公开(公告)日：2015-11-12

申请号：AU2012328924

申请日：2012-10-24

Applicant: QUALCOMM INC

Inventor： VAN DER AUWERA GEERT ,  KARCZEWICZ MARTA ,  WANG XIANGLIN

IPC: H04N19/00

Abstract: A video coder associates a first boundary strength value with an edge in response to determining that a first video block or a second video block is associated with an intra-predicted coding unit (CU), where the edge occurs at a boundary between the first video block and the second video block. The video coder may associate a second or a third boundary strength value with the edge when neither the first video block nor the second video block is associated with an intra-predicted CU. The video coder may apply one or more deblocking filters to samples associated with the edge when the edge is associated with the first boundary strength value or the second boundary strength value. The third boundary strength value indicates that the deblocking filters are turned off for the samples associated with the edge.

公开(公告)号：PH12014501529B1

公开(公告)日：2014-10-08

申请号：PH12014501529

申请日：2014-07-02

Applicant: QUALCOMM INC

Inventor： VAN DER AUWERA GEERT ,  WANG YE-KUI ,  KARCZEWICZ MARTA

Abstract: This disclosure describes techniques for signaling deblocking filter parameters for a current slice of video data with reduced bitstream overhead. Deblocking filter parameters may be coded in one or more of a picture layer parameter set and a slice header. The techniques reduce a number of bits used to signal the deblocking filter parameters by coding a first syntax element that indicates whether deblocking filter parameters are present in both the picture layer parameter set and the slice header, and only coding a second syntax element in the slice header when both sets of deblocking filter parameters are present. Coding the second syntax element is eliminated when deblocking filter parameters are present in only one of the picture layer parameter set or the slice header. The second syntax element indicates which set of deblocking filter parameters to use to define a deblocking filter applied to a current slice.

公开(公告)号：AU2013243604A1

公开(公告)日：2014-10-02

申请号：AU2013243604

申请日：2013-04-02

Applicant: QUALCOMM INC

Inventor： VAN DER AUWERA GEERT ,  WANG XIANGLIN ,  KARCZEWICZ MARTA

IPC: H04N19/00

Abstract: In one example, an apparatus for processing video data comprises a video coder configured to, for each of the one or more chrominance components, calculate a chrominance quantization parameter for a common edge between two blocks of video data based on a first luminance quantization parameter for the first block of video data, a second luminance quantization parameter for the second block of video data, and a chrominance quantization parameter offset value for the chrominance component. The video coder is further configured to determine a strength for a deblocking filter for the common edge based on the chrominance quantization parameter for the chrominance component, and apply the deblocking filter according to the determined strength to deblock the common edge.

公开(公告)号：ZA201309257B

公开(公告)日：2014-08-27

申请号：ZA201309257

申请日：2013-12-09

Applicant: QUALCOMM INC

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

IPC: H04N20060101

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.

公开(公告)号：CA2863062A1

公开(公告)日：2013-07-25

申请号：CA2863062

申请日：2013-01-18

Applicant: QUALCOMM INC

Inventor： VAN DER AUWERA GEERT ,  WANG YE-KUI ,  KARCZEWICZ MARTA

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/174 ,  H04N19/46 ,  H04N19/70

Abstract: This disclosure describes techniques for signaling deblocking filter parameters for a current slice of video data with reduced bitstream overhead. Deblocking filter parameters may be coded in one or more of a picture layer parameter set and a slice header. The techniques reduce a number of bits used to signal the deblocking filter parameters by coding a first syntax element that indicates whether deblocking filter parameters are present in both the picture layer parameter set and the slice header, and only coding a second syntax element in the slice header when both sets of deblocking filter parameters are present. Coding the second syntax element is eliminated when deblocking filter parameters are present in only one of the picture layer parameter set or the slice header. The second syntax element indicates which set of deblocking filter parameters to use to define a deblocking filter applied to a current slice.

公开(公告)号：WO2014105818A3

公开(公告)日：2015-09-11

申请号：PCT/US2013077473

申请日：2013-12-23

Applicant: QUALCOMM INC

Inventor： VAN DER AUWERA GEERT ,  KARCZEWICZ MARTA

IPC: H04N19/30 ,  H04N19/103 ,  H04N19/136 ,  H04N19/182 ,  H04N19/186 ,  H04N19/187 ,  H04N19/196 ,  H04N19/50

CPC classification number: H04N19/103 ,  H04N19/136 ,  H04N19/182 ,  H04N19/187 ,  H04N19/196 ,  H04N19/33 ,  H04N19/50

Abstract: An apparatus for coding video data according to certain aspects includes a memory unit and a processor in communication with the memory unit. The memory unit stores video data. The video data may include a base layer comprising samples with a lower bit depth and an enhancement layer comprising samples with a higher bit depth. The processor predicts the values of samples in the enhancement layer based on the values of samples in the base layer. The prediction performed by the processor includes applying a preliminary mapping to the base layer samples to obtain preliminary predictions, and then applying adaptive adjustments to the preliminary predictions to obtain refined predictions. Parameters used for the adaptive adjustments may depend on the values and distribution of base layer samples. The processor may encode or decode the video data.

Abstract translation: 根据某些方面的用于编码视频数据的装置包括存储器单元和与存储器单元通信的处理器。 存储单元存储视频数据。 视频数据可以包括包括具有较低位深度的样本的基本层和包括具有较高位深度的样本的增强层。 处理器基于基本层中的样本的值来预测增强层中的样本的值。 由处理器执行的预测包括将初步映射应用于基本层样本以获得初步预测，然后对初步预测应用适应性调整以获得精细预测。 用于自适应调整的参数可能取决于基层样本的值和分布。 处理器可以对视频数据进行编码或解码。

公开(公告)号：WO2013192164A3

公开(公告)日：2014-12-04

申请号：PCT/US2013046289

申请日：2013-06-18

Applicant: QUALCOMM INC

Inventor： JOSHI RAJAN LAXMAN ,  VAN DER AUWERA GEERT ,  KARCZEWICZ MARTA

IPC: H04N19/82 ,  H04N19/70

CPC classification number: H04N19/85 ,  H04N19/00903 ,  H04N19/127 ,  H04N19/162 ,  H04N19/176 ,  H04N19/70 ,  H04N19/82

Abstract: Techniques described herein are related to harmonizing the signaling of coding modes and filtering in video coding. In one example, a method of decoding video data is provided that includes decoding a first syntax element to determine whether PCM coding mode is used for one or more video blocks, wherein the PCM coding mode refers to a mode that codes pixel values as PCM samples. The method further includes decoding a second syntax element to determine whether in-loop filtering is applied to the one or more video blocks. Responsive to the first syntax element indicating that the PCM coding mode is used, the method further includes applying in-loop filtering to the one or more video blocks based at least in part on the second syntax element and decoding the one or more video blocks based at least in part on the first and second syntax elements.

Abstract translation: 本文描述的技术涉及协调编码模式的信令和视频编码中的滤波。 在一个示例中，提供了解码视频数据的方法，其包括对第一语法元素进行解码以确定PCM编码模式是否用于一个或多个视频块，其中PCM编码模式是将像素值编码为PCM样本的模式 。 该方法还包括解码第二语法元素以确定是否将一个或多个视频块应用于环路滤波。 响应于指示使用PCM编码模式的第一语法元素，该方法还包括至少部分地基于第二语法元素对一个或多个视频块应用循环过滤，并且基于一个或多个视频块进行解码 至少部分地基于第一和第二语法元素。