公开(公告)号：US20160100177A1

公开(公告)日：2016-04-07

申请号：US14875486

申请日：2015-10-05

Applicant: QUALCOMM Incorporated

Inventor： Wei Pu ,  Marta Karczewicz ,  Feng Zou ,  Rajan Laxman Joshi ,  Vadim Seregin ,  Joel Sole Rojals

IPC: H04N19/186 ,  H04N19/44 ,  H04N19/176

CPC classification number: H04N19/186 ,  H03M7/40 ,  H04N19/176 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91 ,  H04N19/93 ,  H04N19/94

Abstract: In an example, a method of decoding video data using palette mode may include receiving a palette mode encoded block of video data of a picture. The method may include receiving encoded palette mode information for the palette mode encoded block of video data. The encoded palette mode information may be encoded according to a kth order non-uniform truncated exponential-Golomb (TEGk) coding scheme and includes a unary prefix code word and a suffix code word. The method may include entropy decoding the encoded palette mode information using the kth order non-uniform truncated exponential-Golomb (TEGk) coding scheme. The kth order non-uniform TEGk coding scheme is different from a kth order exponential-Golomb (EGk) coding scheme and a kth order truncated exponential-Golomb (TEGk) coding scheme. The method may include decoding the palette mode encoded block of video data using the decoded palette mode information.

Abstract translation: 在一个示例中，使用调色板模式对视频数据进行解码的方法可以包括接收图片的视频数据的调色板模式编码块。 该方法可以包括接收用于调色板模式编码的视频数据块的编码调色板模式信息。 编码调色板模式信息可以根据第k阶非均匀截取指数 - 哥伦布（TEGK）编码方案进行编码，并且包括一字前缀码字和后缀码字。 该方法可以包括使用第k阶非均匀截断指数哥伦布（TEGK）编码方案熵解码编码的调色板模式信息。 第k阶非均匀TEGK编码方案与第k阶指数 - 哥伦布（EGK）编码方案和第k阶截取指数 - 哥伦布（TEGK）编码方案不同。 该方法可以包括使用解码的调色板模式信息解码调色板模式编码的视频数据块。

公开(公告)号：US09277241B2

公开(公告)日：2016-03-01

申请号：US14463366

申请日：2014-08-19

Applicant: QUALCOMM Incorporated

Inventor： Wei-Jung Chien ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N19/103 ,  H04N19/136 ,  H04N19/174 ,  H04N19/60 ,  H03M7/40 ,  H04N19/13 ,  H04N19/91 ,  H04N19/50 ,  H04N19/176

CPC classification number: H04N19/60 ,  H03M7/4018 ,  H04N19/103 ,  H04N19/13 ,  H04N19/136 ,  H04N19/174 ,  H04N19/176 ,  H04N19/50 ,  H04N19/91

Abstract: A reduction in the number of binarizations and/or contexts used in context adaptive binary arithmetic coding (CABAC) for video coding is proposed. In particular, this disclosure proposes techniques that may lower the number contexts used in CABAC by up to 56.

公开(公告)号：US20160057420A1

公开(公告)日：2016-02-25

申请号：US14831644

申请日：2015-08-20

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Krishnakanth Rapaka ,  Ye-Kui Wang ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N19/124 ,  H04N19/513 ,  H04N19/176

CPC classification number: H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513 ,  H04N19/52 ,  H04N19/523 ,  H04N19/593 ,  H04N19/70

Abstract: A video coder may include a current picture and a reference picture in a reference picture list. The video coder may determine a co-located block of the reference picture. The co-located block is co-located with a current block of the current picture. Furthermore, the video coder derives a temporal motion vector predictor from the co-located block and may determine the temporal motion vector predictor has sub-pixel precision. The video coder may right-shift the temporal motion vector predictor determined to have sub-pixel precision. In addition, the video coder may determine, based on the right-shifted temporal motion vector predictor, a predictive block within the current picture.

Abstract translation: 视频编码器可以在参考图片列表中包括当前图片和参考图片。 视频编码器可以确定参考图片的共同定位块。 共址块与当前图像的当前块共同定位。 此外，视频编码器从共址块导出时间运动矢量预测器，并且可以确定时间运动矢量预测器具有子像素精度。 视频编码器可以对确定为具有子像素精度的时间运动矢量预测器进行右移。 此外，视频编码器可以基于右移时间运动矢量预测器确定当前图像内的预测块。

公开(公告)号：US20160037164A1

公开(公告)日：2016-02-04

申请号：US14816980

申请日：2015-08-03

Applicant: QUALCOMM Incorporated

Inventor： Rajan Laxman Joshi ,  Wei Pu ,  Vadim Seregin ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N19/136 ,  H04N19/70 ,  H04N19/182 ,  H04N19/176 ,  H04N19/44

Abstract: In an example, a method of processing video data may include inferring a pixel scan order for a first palette mode encoded block of video data without receiving a block-level syntax element having a value representative of the pixel scan order for the first palette mode encoded block. The method may include decoding the first palette mode encoded block of video data using the inferred pixel scan order. The method may include receiving a block-level syntax element having a value representative of a pixel scan order for a second palette mode encoded block of video data. The method may include determining the pixel scan order for the second palette mode encoded block of video data based on the received block-level syntax element. The method may include decoding the second palette mode encoded block of video data using the determined pixel scan order.

Abstract translation: 在一个示例中，处理视频数据的方法可以包括推断用于第一调色板模式编码的视频数据块的像素扫描顺序，而不接收具有表示第一调色板模式编码的像素扫描顺序的值的块级语法元素 块。 该方法可以包括使用推测的像素扫描顺序来解码第一调色板模式编码的视频数据块。 该方法可以包括接收具有代表视频数据的第二调色板模式编码块的像素扫描顺序的值的块级语法元素。 该方法可以包括基于接收的块级语法元素确定第二调色板模式编码的视频数据块的像素扫描顺序。 该方法可以包括使用确定的像素扫描顺序来解码第二调色板模式编码的视频数据块。

公开(公告)号：US09237358B2

公开(公告)日：2016-01-12

申请号：US13645296

申请日：2012-10-04

Applicant: Qualcomm Incorporated

Inventor： Wei-Jung Chien ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N19/103 ,  H04N19/136 ,  H04N19/174 ,  H04N19/60 ,  H03M7/40 ,  H04N19/13 ,  H04N19/91 ,  H04N19/50 ,  H04N19/176

CPC classification number: H04N19/60 ,  H03M7/4018 ,  H04N19/103 ,  H04N19/13 ,  H04N19/136 ,  H04N19/174 ,  H04N19/176 ,  H04N19/50 ,  H04N19/91

Abstract: A reduction in the number of binarizations and/or contexts used in context adaptive binary arithmetic coding (CABAC) for video coding is proposed. In particular, this disclosure proposes techniques that may lower the number contexts used in CABAC by up to 56.

公开(公告)号：US20150382010A1

公开(公告)日：2015-12-31

申请号：US14750935

申请日：2015-06-25

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Marta Karczewicz ,  Chao Pang ,  Joel Sole Rojals

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/13

CPC classification number: H04N19/176 ,  H04N19/13 ,  H04N19/139 ,  H04N19/184 ,  H04N19/52

Abstract: A method for motion vector difference (MVD) coding of screen content video data is disclosed. In one aspect, the method includes determining an MVD between a predicted motion vector and a current motion vector and generating a binary string comprising n bins via binarizing the MVD. The method further includes determining whether an absolute value of the MVD is greater than a threshold value and encoding a subset of the n bins via an exponential Golomb code having an order that is greater than one in response to the absolute value of the MVD being greater than the threshold value.

Abstract translation: 公开了一种用于屏幕内容视频数据的运动矢量差（MVD）编码的方法。 一方面，该方法包括：通过二值化MVD，确定预测运动矢量与当前运动矢量之间的MVD，并产生包括n个箱的二进制串。 该方法还包括确定MVD的绝对值是否大于阈值，并且通过响应于MVD的绝对值更大的具有大于1的顺序的指数Golomb码对n个存储体的子集进行编码 超过阈值。

公开(公告)号：US20150373358A1

公开(公告)日：2015-12-24

申请号：US14743253

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Krishnakanth Rapaka ,  Xiang Li ,  Joel Sole Rojals ,  Cheng-Teh Hsieh ,  Marta Karczewicz

IPC: H04N19/513 ,  H04N19/52 ,  H04N19/176 ,  H04N19/184 ,  H04N19/174 ,  H04N19/503 ,  H04N19/172

CPC classification number: H04N19/176 ,  H04N19/105 ,  H04N19/109 ,  H04N19/159 ,  H04N19/174 ,  H04N19/593

Abstract: Techniques and systems are provided for encoding and decoding video data. For example, a method of encoding video data including a plurality of pictures is described. The method includes performing intra-picture prediction on a block of one of the pictures to generate a prediction unit. Performing the intra-picture prediction includes selecting a reference block for intra-block copy prediction of a coding tree unit (CTU). The reference block is selected from a plurality of encoded blocks, and blocks within the CTU encoded with bi-prediction are excluded from selection as the reference block. Performing the intra-picture prediction further includes performing intra-block copy prediction with the selected reference block to generate the prediction unit. The method also includes generating syntax elements encoding the prediction unit based on the performed intra-picture prediction.

Abstract translation: 提供技术和系统用于对视频数据进行编码和解码。 例如，描述了对包括多个图像的视频数据进行编码的方法。 该方法包括对一幅图像的块执行画面内预测，以生成预测单元。 执行图像内预测包括选择用于编码树单元（CTU）的块内复制预测的参考块。 从多个编码块中选择参考块，并且将用双预测编码的CTU内的块从选择中排除为参考块。 执行图像内预测还包括利用所选择的参考块执行块内复制预测以生成预测单元。 该方法还包括基于所执行的图像内预测来生成编码预测单元的语法元素。

公开(公告)号：US20150373357A1

公开(公告)日：2015-12-24

申请号：US14743176

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Krishnakanth Rapaka ,  Xiang Li ,  Joel Sole Rojals ,  Cheng-Teh Hsieh ,  Marta Karczewicz

IPC: H04N19/513 ,  H04N19/184 ,  H04N19/172 ,  H04N19/503 ,  H04N19/52

CPC classification number: H04N19/176 ,  H04N19/105 ,  H04N19/109 ,  H04N19/159 ,  H04N19/174 ,  H04N19/593

Abstract: Techniques and systems are provided for encoding and decoding video data. For example, a method of encoding video data includes obtaining video data at an encoder, and determining to perform intra-picture prediction on the video data, using intra-block copy prediction, to generate the plurality of encoded video pictures. The method also includes performing the intra-picture prediction on the video data using the intra-block copy prediction, and, in response to determining to perform the intra-picture prediction on the video data using the intra-block copy prediction, disabling at least one of inter-picture bi-prediction or inter-picture uni-prediction for the plurality of encoded video pictures. The method also includes generating the plurality of encoded video pictures based on the received video data according to the performed intra-block copy prediction.

Abstract translation: 提供技术和系统用于对视频数据进行编码和解码。 例如，编码视频数据的方法包括：在编码器处获得视频数据，并且使用块内复制预测确定对视频数据执行画面内预测，以生成多个编码视频图像。 该方法还包括使用块内复制预测对视频数据进行图像内预测，并且响应于使用块内复制预测确定对视频数据执行图像内预测，至少禁用 对于多个经编码的视频图像中的一个图像间预测或图像间预测。 该方法还包括根据所执行的块内复制预测，基于接收到的视频数据生成多个编码视频图像。

公开(公告)号：US20150373339A1

公开(公告)日：2015-12-24

申请号：US14743898

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

Inventor： Feng Zou ,  Marta Karczewicz ,  Joel Sole Rojals ,  Rajan Laxman Joshi ,  Wei Pu ,  Vadim Seregin

IPC: H04N19/176 ,  H04N19/587 ,  H04N19/593 ,  H04N19/93 ,  H04N19/105 ,  H04N19/186

CPC classification number: H04N19/176 ,  H04N19/105 ,  H04N19/119 ,  H04N19/182 ,  H04N19/186 ,  H04N19/48 ,  H04N19/587 ,  H04N19/593 ,  H04N19/70 ,  H04N19/93

Abstract: An example method of decoding video data includes determining a palette for decoding a block of video data, where the palette includes one or more palette entries each having a respective palette index, determining a first plurality of palette indices for first pixels of the block of video data, enabling a palette coding mode based on a run length of a run of a second plurality of palette indices for second pixels of the block of video data being decoded relative to the first plurality of palette indices meeting a run length threshold, and decoding the run of the second plurality of palette indices relative to the first plurality of palette indices using the palette coding mode.

Abstract translation: 解码视频数据的示例性方法包括确定用于解码视频数据块的调色板，其中调色板包括一个或多个调色板条目，每个调色板条目具有相应的调色板索引，确定视频块的第一像素的第一多个调色板索引 数据，基于针对视频数据块的第二像素的第二多个调色板索引的游程的游程长度相对于满足游程长度阈值的第一多个调色板索引进行解码，启用调色板编码模式，以及对 使用调色板编码模式相对于第一多个调色板索引运行第二多个调色板索引。

公开(公告)号：US09154792B2

公开(公告)日：2015-10-06

申请号：US13669032

申请日：2012-11-05

Applicant: Qualcomm Incorporated

Inventor： Wei-Jung Chien ,  Joel Sole Rojals ,  Marta Karczewicz ,  Rajan Laxman Joshi

IPC: H04N7/26 ,  H04N19/88 ,  H03M7/40 ,  H04N19/70 ,  H04N19/13 ,  H04N19/463 ,  H04N19/18

CPC classification number: H04N19/88 ,  H03M7/4018 ,  H03M7/4037 ,  H04N19/13 ,  H04N19/18 ,  H04N19/463 ,  H04N19/70

Abstract: A video encoder is configured to determine a first and second binary string for a value indicating the position of the last significant coefficient, within a video block of size T. A video decoder is configured to determine a value indicating the position of a last significant coefficient within a video block of size T based on a first and second binary string. In one example, the first binary string is based on a truncated unary coding scheme defined by a maximum bit length defined by 2 log2(T)−1 and the second binary string is based on a fixed length coding scheme defined by a maximum bit length defined by log2(T)−2.

Abstract translation: 视频编码器被配置为在大小为T的视频块内确定用于指示最后有效系数的位置的值的第一和第二二进制串。视频解码器被配置为确定指示最后有效系数的位置的值 在基于第一和第二二进制串的大小为T的视频块内。 在一个示例中，第一二进制串基于由2log2（T）-1定义的最大位长定义的截断的一元编码方案，第二二进制串基于由最大位长度定义的固定长度编码方案 由log2（T）-2定义。