公开(公告)号：WO2018070914A1

公开(公告)日：2018-04-19

申请号：PCT/SE2017/050976

申请日：2017-10-06

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： STRÖM, Jacob ,  ANDERSSON, Kenneth ,  WENNERSTEN, Per ,  WANG, Ying

IPC: H04N19/117 ,  H04N19/186 ,  H04N19/85

Abstract: A refined reconstruction block of a first color component in a picture is determined by at least one of clipping and bilateral filtering a sum of a prediction block of the first color component and a residual of the first color component. A residual block of a second color component is predicted from the refined 5 construction block of the first color component. Applying clipping and/or filtering to the first color component prior to using it in cross-component prediction of the second color component improves and refines predictions or residuals of another color component.

Abstract translation: 通过对第一颜色分量的预测块和第一颜色分量的残差进行剪切和双边滤波中的至少一个，来确定图片中的第一颜色分量的改进的重构块 。 从第一颜色分量的细化结构块预测第二颜色分量的残余块。 在将第一颜色分量的交叉分量预测用于第二颜色分量之前，对第一颜色分量应用剪裁和/或滤波可改善和改善另一颜色分量的预测或残差。

公开(公告)号：WO2018067051A1

公开(公告)日：2018-04-12

申请号：PCT/SE2017/050776

申请日：2017-07-11

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： WANG, Ying ,  WENNERSTEN, Per ,  ANDERSSON, Kenneth ,  STRÖM, Jacob

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/17 ,  H04N19/186 ,  H04N19/82

Abstract: A pixel value of a pixel in a picture of a video sequence is modified by a weighted combination of the pixel value and at least one spatially neighboring pixel value in a filtering. The filtering depends on a pixel distance between the pixel and a neighboring pixel and on a pixel value difference between the pixel and a neighboring pixel value of the neighboring pixel. The filtering is controlled by a spatial parameter and a range parameter. At least one of the spatial parameter and the range parameter depends on at least one of a quantization parameter, a quantization scaling matrix, a transform width, a transform height, a picture width, a picture height and a magnitude of a negative filter coefficient used as part of inter/intra prediction. The embodiments provide a derining filtering to combat ringing artifacts during video coding.

Abstract translation: 视频序列的图片中的像素的像素值通过滤波中的像素值和至少一个空间相邻像素值的加权组合来修改。 滤波取决于像素与相邻像素之间的像素距离以及像素与相邻像素的相邻像素值之间的像素值差。 过滤由空间参数和范围参数控制。 空间参数和范围参数中的至少一个取决于量化参数，量化缩放矩阵，变换宽度，变换高度，图片宽度，图片高度以及所使用的负滤波器系数的量值中的至少一个 作为帧间/帧内预测的一部分。 这些实施例在视频编码期间提供了一种derrin滤波来对抗振铃伪像。

公开(公告)号：WO2017127000A1

公开(公告)日：2017-07-27

申请号：PCT/SE2016/050033

申请日：2016-01-20

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： WANG, Ying ,  WANG, Liping ,  FU, Jing

IPC: H04L1/00 ,  H04W76/02 ,  H03M13/35

CPC classification number: H04W28/0231 ,  H03M13/353 ,  H03M13/356 ,  H04L1/009 ,  H04L1/1877 ,  H04W28/0252 ,  H04W28/0268 ,  H04W28/10

Abstract: Disclosed is a method performed by a system of a wireless communication network (100) for determining transmission conditions for a real-time media flow to be transmitted wirelessly to a first User Equipment, UE, (121) residing in a first cell (115) served by a first base station (110) of the network. The method comprises obtaining radio network statistics of the first cell (115), the radio network statistics comprising radio network data for individual of a plurality of UEs (122) in the first cell, UE throughput for individual of the plurality of UEs, and UE packet loss or packet delay for individual of the plurality of UEs, and obtaining, at a second time point occurring later in time than the obtaining of the radio network statistics, radio network data for the first UE (121). The method further comprises determining a predicted first UE throughput and a predicted first UE packet loss or packt delay based on the obtained radio network statistics of the first cell (115) and on the obtained radio network data for the first UE (121), and triggering sending of information of the predicted first UE throughput and of the predicted first UE packet loss or excessive packet delay to a sender of the real-time media flow to the first UE (121). A Forward Error Correction, FEC, optimization module (406) takes the predicted UE packet loss rate, the predicted UE throughput, and adapts the amount of FEC redundancy packets according to the throughput and packet loss rate. Further, the adapted amount of FEC redundancy packets are then used by the sender of the video when transmitting the video.

Abstract translation: 公开了一种由无线通信网络（100）的系统执行的方法，用于确定要实时媒体流无线传输到第一用户设备UE（121）的传输条件， 位于由网络的第一基站（110）服务的第一小区（115）中。 该方法包括获得第一小区（115）的无线电网络统计数据，无线电网络统计数据包括第一小区中多个UE（122）中的各个UE的无线电网络数据，多个UE中的各个UE的UE吞吐量以及UE 分组丢失或分组延迟，并且在比获得无线电网络统计量晚的时间点获得用于第一UE（121）的无线电网络数据的第二时间点。 该方法进一步包括基于所获得的第一小区（115）的无线电网络统计量和第一UE（121）的所获得的无线电网络数据来确定预测的第一UE吞吐量和预测的第一UE分组丢失或打包延迟，以及 触发向第一UE（121）发送预测的第一UE吞吐量和预测的第一UE分组丢失或过度分组延迟的信息给实时媒体流的发送方。 前向纠错FEC优化模块（406）采用预测的UE分组丢失率，预测的UE吞吐量，并且根据吞吐量和分组丢失率来调整FEC冗余分组的数量。 此外，在传输视频时，视频的发送者使用适合的FEC冗余分组的数量。

公开(公告)号：WO2018117938A1

公开(公告)日：2018-06-28

申请号：PCT/SE2017/051222

申请日：2017-12-06

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： WENNERSTEN, Per ,  ENHORN, Jack ,  WANG, Ying ,  ANDERSSON, Kenneth ,  STRÖM, Jacob

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/17 ,  H04N19/186 ,  H04N19/82

Abstract: A pixel value of a pixel in a picture of a video sequence is modified by a weighted combination of the pixel value and at least one spatially neighboring pixel value in a filtering. The filtering depends on a pixel distance between the pixel and a neighboring pixel and on a pixel value difference between the pixel and a neighboring pixel value of the neighboring pixel. The filtering is controlled by a spatial parameter and a range parameter. The spatial parameter depends on at least one of a width and a height of a transform block, and on at least one of a prediction type of a block of pixels in the picture, a picture type of the picture, and a slice type of a slice in the picture.

公开(公告)号：WO2016122358A1

公开(公告)日：2016-08-04

申请号：PCT/SE2015/050078

申请日：2015-01-27

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： SAMUELSSON, Jonatan ,  WANG, Ying ,  PETTERSSON, Martin

IPC: H04N7/01 ,  H04N19/70 ,  H04N19/46 ,  H04N19/587

CPC classification number: G06F3/1454 ,  G06F3/0338 ,  G06T7/20 ,  G06T7/70 ,  G06T7/97 ,  G06T2207/10016 ,  H04N19/46 ,  H04N19/587 ,  H04N19/70

Abstract: The invention relates to an encoder and a decoder and methods therein for supporting screen sharing, where the screen sharing comprises encoding pictures F representing pixels of a shared screen, providing said pictures to a decoder where they are decoded. The method performed by the encoder comprises deriving information related to an object which is moved on the shared screen between two pictures F n and F n+1 . At least part of the derived information is related to an intermediate position of the object, on the shared screen, between the two pictures F n and F n+1 . The method further comprises providing said information to the decoder, thereby enabling the decoder to generate intermediate pictures, F IMD , in addition to the pictures, F, based on the provided information, wherein the object is generated in different positions in said intermediate pictures, F IMD , thus reconstructing the movement of the object between two provided pictures F n and F n+1 .

Abstract translation: 本发明涉及一种用于支持屏幕共享的编码器及其解码器及其方法，其中屏幕共享包括对表示共享屏幕的像素的图像F进行编码，将解码器提供给解码器。 由编码器执行的方法包括导出在两个图像Fn和Fn + 1之间在共享屏幕上移动的对象相关的信息。 导出信息的至少一部分与共享屏幕上的对象的中间位置在两个图像Fn和Fn + 1之间有关。 该方法还包括向解码器提供所述信息，从而使解码器能够基于所提供的信息，除了图像F之外还生成中间图像FIMD，其中，所述对象在所述中间图像FIMD中以不同的位置生成 ，从而重建物体在两个提供的图像Fn和Fn + 1之间的运动。