公开(公告)号：US20150016516A1

公开(公告)日：2015-01-15

申请号：US14256858

申请日：2014-04-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ankur Saxena ,  Haoming Chen ,  Felix Carlos Fernandes

IPC: H04N19/61

CPC classification number: H04N19/182 ,  H04N19/105 ,  H04N19/12 ,  H04N19/136 ,  H04N19/436 ,  H04N19/593

Abstract: In various embodiments, a method and a decoder include identifying a directional intra prediction mode with an angle of prediction. The method also includes identifying a first and second reference neighboring samples in a block of the video along the angle of prediction; the angle of prediction intersects a pixel to be predicted. The method further includes determining which of the first and second reference samples is nearest the angle of prediction and applying a value of the nearest reference neighboring sample to the pixel as a predictor. Also, a method and a decoder include determining whether a block type of a block of the video is intra block copy. The method also includes responsive to the block type being the intra block copy, determining a transform block size of the block and, responsive to the transform block size being 4×4, applying a discrete sine transform to the block.

Abstract translation: 在各种实施例中，方法和解码器包括以预测角度来识别定向帧内预测模式。 该方法还包括沿预测角度识别视频块中的第一和第二参考相邻采样; 预测角度与要预测的像素相交。 该方法还包括确定第一和第二参考样本中的哪一个最接近于预测角度，并将最近的参考相邻样本的值作为预测器应用于像素。 此外，方法和解码器包括确定视频的块的块类型是否是块内副本。 该方法还包括响应于块类型是帧内块拷贝，确定块的变换块大小，并且响应于变换块大小为4×4，对块进行离散正弦变换。

公开(公告)号：US20140195560A1

公开(公告)日：2014-07-10

申请号：US14060314

申请日：2013-10-22

Applicant: Samsung Electronics Co., LTD

Inventor： Xin Xin ,  Zhu Li ,  Abhishek Nagar ,  Gaurav Srivastava ,  Zhan Ma ,  Kong Posh Bhat ,  Felix Carlos Fernandes

IPC: G06F17/30

CPC classification number: G06F16/583

Abstract: To improve precision of visual search processing, SIFT points within a query image are forward matched to features in each of a plurality of repository images and SIFT points within each repository image are backward matched to features within the query image. Forward-only, backward-only and forward-and-backward matches may be weighted differently in determining an image match. Two way matching may be triggered by query image bit rate in excess of a threshold or by a sum of weighted distances between matching points exceeding a threshold. Significant performance gains in eliminating false positive matches are achieved.

Abstract translation: 为了提高视觉搜索处理的精度，查询图像内的SIFT点与多个存储库图像中的每一个中的特征向前匹配，并且每个储存库图像内的SIFT点与查询图像内的特征反向匹配。 在确定图像匹配时，仅向前，向后和向前和向后的匹配可以被不同地加权。 可以通过超过阈值的查询图像比特率或超过阈值的匹配点之间的加权距离之和来触发双向匹配。 实现消除假阳性匹配的显着性能提升。

公开(公告)号：US10165218B2

公开(公告)日：2018-12-25

申请号：US14332132

申请日：2014-07-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Felix Carlos Fernandes ,  Esmaeil Faramarzi ,  Xin Li ,  Anshuman Tewari ,  Youngkwon Lim ,  Sungoh Hwang

IPC: H04N5/57 ,  H04N9/64 ,  H04N21/234 ,  H04N21/235 ,  H04N21/236 ,  H04N21/414 ,  H04N21/431 ,  H04N21/434 ,  H04N21/435 ,  H04N21/442 ,  H04N21/658 ,  G09G3/34 ,  H04N9/68 ,  G09G3/3208 ,  H04N21/84

Abstract: A method includes identifying an optimal backlight value for at least one quality level of a first video segment. The method also includes transmitting data for the first video segment. The transmitted data for the first video segment includes a message containing a first set of display adaptation information. The first set of display adaptation information includes the optimal backlight value for the at least one quality level of the first video segment. The method further includes identifying a backlight value for the at least one quality level of a second video segment. The method also includes determining a maximum backlight value change threshold between successive video segments. In addition, the method includes applying temporal smoothing between the optimal backlight value and the backlight value based on the maximum backlight value change threshold.

公开(公告)号：US20140201200A1

公开(公告)日：2014-07-17

申请号：US14153907

申请日：2014-01-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Zhu Li ,  Abhishek Nagar ,  Kong Posh Bhat ,  Xin Xin ,  Gaurav Srivastava ,  Felix Carlos Fernandes

IPC: G06F17/30

CPC classification number: G06F16/532 ,  G06F16/583 ,  G06K9/4676 ,  G06K9/6212 ,  G06K9/6215

Abstract: Global descriptors for images within an image repository accessible to a visual search server are compared based on order statistics processing including sorting (which is a non-linear transform) and heat kernel matching. Affinity scores are computed for Hamming distances between Fisher vector components corresponding to different clusters of global descriptors from a pair of images and normalized to [0, 1], with zero affinity scores assigned to non-active cluster pairs. Linear Discriminant Analysis is employed to determine a sorted vector of affinity scores to obtain a new global descriptor. The resulting global descriptors produce significantly more accurate matching.

Abstract translation: 基于包括排序（其是非线性变换）和热核心匹配的顺序统计处理来比较可视搜索服务器可访问的图像存储库内的图像的全局描述符。 计算对应于来自一对图像的全局描述符的不同簇的Fisher向量分量之间的汉明距离的归一化分数，并归一化为[0,1]，其中零亲和度分数分配给非活动簇对。 线性判别分析用于确定亲和度分数的排序向量以获得新的全局描述符。 所产生的全局描述符产生明显更准确的匹配。

公开(公告)号：US09235780B2

公开(公告)日：2016-01-12

申请号：US14101047

申请日：2013-12-09

Applicant: Samsung Electronics Co., LTD

Inventor： Zhu Li ,  Xin Xin ,  Abhishek Nagar ,  Gaurav Srivastava ,  Kong Posh Bhat ,  Felix Carlos Fernandes

IPC: G06K9/68 ,  G06K9/62 ,  G06K9/46

CPC classification number: G06K9/6211 ,  G06K9/4671

Abstract: To improve feature selection accuracy during a visual search, interest points within a query image are two-way matched to features in an affine transformed image or otherwise transformed version of the query image. A user device implements a method for selecting local descriptors in the visual search. The method includes: detecting a first set of interest points for the original image; computing an affine transform matrix; computing a new image as a transformation of the original image using the affine transform matrix; detecting a second set of interest points from the and new image; performing a two-way matching between the first set of interest points and the second set of interest points; sorting matching pairs according to a specified self-matching score (SMS); assigning an infinite value to SMS of unmatched interest points from the original image; selecting the interest points based on SMS. Significant performance gains reduce false positive matches.

Abstract translation: 为了在视觉搜索期间提高特征选择精度，查询图像内的兴趣点与仿射变换图像中的特征或查询图像的其他变换版本进行双向匹配。 用户设备实现在视觉搜索中选择本地描述符的方法。 该方法包括：检测原始图像的第一组兴趣点; 计算仿射变换矩阵; 使用仿射变换矩阵计算新图像作为原始图像的变换; 从新图像检测第二组兴趣点; 执行第一组兴趣点与第二组兴趣点之间的双向匹配; 根据指定的自匹配分数（SMS）对匹配对进行排序; 从原始图像向无缝匹配的兴趣点的SMS分配无限值; 基于短信选择兴趣点。 显着的业绩增益减少假阳性匹配。

公开(公告)号：US20150110181A1

公开(公告)日：2015-04-23

申请号：US14518883

申请日：2014-10-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ankur Saxena ,  Guoxin Jin ,  Felix Carlos Fernandes

IPC: H04N19/157 ,  H04N19/147 ,  H04N19/583 ,  H04N19/186 ,  H04N19/182

CPC classification number: H04N19/147 ,  H04N19/11 ,  H04N19/176 ,  H04N19/46 ,  H04N19/463

Abstract: A method is provided that includes receiving a bitstream. The method also includes parsing the bitstream for a flag indicating whether a palette was used from a first or second coding unit. The method also includes decoding the first coding unit using the palette from the first or second coding unit indicated by the flag. The palette is determined based on which palette of the first or second coding unit improves compression performance. Also, a method is provided that includes receiving a bitstream with a predicted pixel. A coding unit and a reference unit are identified. A number of pixels of the coding unit and the reference unit overlap. A set of available pixels and a set of unavailable pixels of the reference unit are identified. The predicted pixel of the set of unavailable pixels is estimated as a pixel of the set of available pixels.

Abstract translation: 提供了一种包括接收比特流的方法。 该方法还包括解析比特流，用于指示是否从第一或第二编码单元使用调色板的标志。 该方法还包括使用来自由标志指示的第一或第二编码单元的调色板解码第一编码单元。 基于第一或第二编码单元的哪个调色板提高压缩性能来确定调色板。 此外，提供了一种包括以预测像素接收比特流的方法。 识别编码单元和参考单元。 编码单元和参考单元的多个像素重叠。 识别参考单元的一组可用像素和一组不可用像素。 将不可用像素组中的预测像素估计为可用像素集合的像素。

公开(公告)号：US20150029394A1

公开(公告)日：2015-01-29

申请号：US14332132

申请日：2014-07-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Felix Carlos Fernandes ,  Esmaeil Faramarzi ,  Xin Li ,  Anshuman Tewari ,  Youngkwon Lim ,  Sungoh Hwang

IPC: H04N5/57 ,  H04N9/64

CPC classification number: H04N5/57 ,  G09G3/3208 ,  G09G3/3406 ,  G09G2320/0626 ,  G09G2330/021 ,  G09G2360/16 ,  H04N9/68 ,  H04N21/23418 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/41407 ,  H04N21/4318 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/4424 ,  H04N21/6582 ,  H04N21/84

Abstract: A method includes identifying an optimal backlight value for at least one quality level of a first video segment. The method also includes transmitting data for the first video segment. The transmitted data for the first video segment includes a message containing a first set of display adaptation information. The first set of display adaptation information includes the optimal backlight value for the at least one quality level of the first video segment. The method further includes identifying a backlight value for the at least one quality level of a second video segment. The method also includes determining a maximum backlight value change threshold between successive video segments. In addition, the method includes applying temporal smoothing between the optimal backlight value and the backlight value based on the maximum backlight value change threshold.

Abstract translation: 一种方法包括为第一视频段的至少一个质量水平识别最佳背光值。 该方法还包括发送用于第一视频段的数据。 第一视频段的发送数据包括包含第一组显示适配信息的消息。 第一组显示适配信息包括用于第一视频段的至少一个质量水平的最佳背光值。 该方法还包括识别用于第二视频段的至少一个质量水平的背光值。 该方法还包括确定连续视频段之间的最大背光值改变阈值。 此外，该方法包括基于最大背光值改变阈值在最佳背光值和背光值之间应用时间平滑。

公开(公告)号：US09866846B2

公开(公告)日：2018-01-09

申请号：US14877776

申请日：2015-10-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Felix Carlos Fernandes ,  Madhukar Budagavi

IPC: H04N19/44 ,  H04N19/176 ,  H04N19/172 ,  H04N19/127 ,  H04N19/157 ,  H04N19/82 ,  H04N19/86

CPC classification number: H04N19/172 ,  H04N19/127 ,  H04N19/157 ,  H04N19/82 ,  H04N19/86

Abstract: A decoder for video processing includes a receiver configured to receive a bitstream associated with a video from a coder. The decoder also includes a processor configured to parse the bitstream to determine a percentage of at least one a number of six tap filterings or a number of alpha point deblocking instances, in a specified period. The processor is further configured to determine a voltage and frequency to be used for decoding the video proportional to the percentage of the at least one of the number of six tap filterings or the number of alpha point deblocking instances. The processor is configured to decode the video at the determined voltage and frequency. Other embodiments including a encoder and method also are disclosed.

公开(公告)号：US20160105680A1

公开(公告)日：2016-04-14

申请号：US14877776

申请日：2015-10-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Felix Carlos Fernandes ,  Madhukar Budagavi

IPC: H04N19/44 ,  H04N19/117 ,  H04N19/176

CPC classification number: H04N19/172 ,  H04N19/127 ,  H04N19/157 ,  H04N19/82 ,  H04N19/86

Abstract: A decoder for video processing includes a receiver configured to receive a bitstream associated with a video from a coder. The decoder also includes a processor configured to parse the bitstream to determine a percentage of at least one a number of six tap filterings or a number of alpha point deblocking instances, in a specified period. The processor is further configured to determine a voltage and frequency to be used for decoding the video proportional to the percentage of the at least one of the number of six tap filterings or the number of alpha point deblocking instances. The processor is configured to decode the video at the determined voltage and frequency. Other embodiments including a encoder and method also are disclosed.

Abstract translation: 用于视频处理的解码器包括被配置为从编码器接收与视频相关联的比特流的接收机。 解码器还包括处理器，其被配置为在指定的时间段内解析比特流以确定至少一个数量的六个抽头滤波或多个α点解块实例的百分比。 处理器还被配置为确定要用于解码视频的电压和频率，其与六次抽头滤波的数量中的至少一个的百分比成比例，或者α点解块实例的数量。 处理器被配置为以确定的电压和频率对视频进行解码。 还公开了包括编码器和方法的其它实施例。

公开(公告)号：US20150172726A1

公开(公告)日：2015-06-18

申请号：US14567517

申请日：2014-12-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Esmaeil Faramarzi ,  Felix Carlos Fernandes ,  Kyungmo Park

IPC: H04N19/86 ,  G06T5/00 ,  H04N19/137

CPC classification number: H04N19/137 ,  G06T3/4053 ,  G06T5/002 ,  G06T5/003 ,  G06T2207/10016 ,  G06T2207/20201 ,  H04N19/117 ,  H04N19/132 ,  H04N19/182 ,  H04N19/513 ,  H04N19/59 ,  H04N19/85

Abstract: A method for real-time multi-frame super resolution (SR) of video content is provided. The method includes receiving a bitstream including an encoded video, motion metadata for a plurality of blocks of a frame of video content, and parameters. The motion metadata is estimated from the original video before downsampling and encoding. The motion metadata is averaged over consecutive blocks. The method includes upscaling the motion metadata for the plurality of blocks. The method also includes upscaling the decoded video using the upscaled motion metadata. The method also includes deblurring and denoising the upscaled video.

Abstract translation: 提供了一种视频内容的实时多帧超分辨率（SR）方法。 该方法包括接收包括编码视频，视频内容帧的多个块的运动元数据和参数的比特流。 在下采样和编码之前，从原始视频估计运动元数据。 运动元数据在连续块上进行平均。 该方法包括对多个块的运动元数据进行放大。 该方法还包括使用放大的运动元数据来升高解码的视频。 该方法还包括去放大和去噪放大的视频。