公开(公告)号：US20160127678A1

公开(公告)日：2016-05-05

申请号：US14959341

申请日：2015-12-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Zhang ,  Zhigang Yao ,  Qingpeng Xie

IPC: H04N7/01 ,  H04N5/14

CPC classification number: H04N7/014 ,  H04N5/145 ,  H04N7/0117 ,  H04N7/0125 ,  H04N7/0127 ,  H04N19/521 ,  H04N19/527 ,  H04N19/567 ,  H04N19/577

Abstract: A method and an apparatus for determining a small-object region in a video frame. The method includes dividing a current video frame into at least two regions, and determining a global motion vector corresponding to each region; determining an interframe motion vector of each group of adjacent frames in multiple video frames that include the current video frame and a reference frame of the current video frame; determining a candidate small-object region in the current video frame according to the interframe motion vector of the each group of adjacent frames and the determined global motion vector corresponding to each region; and performing filtering on the candidate small-object region in the current video frame, and determining a region obtained after the filtering as a small-object region in the current video frame.

Abstract translation: 一种用于确定视频帧中的小对象区域的方法和装置。 该方法包括将当前视频帧划分为至少两个区域，并且确定对应于每个区域的全局运动矢量; 确定包括当前视频帧和当前视频帧的参考帧的多个视频帧中的每组相邻帧的帧间运动矢量; 根据每组相邻帧的帧间运动矢量和对应于每个区域的确定的全局运动矢量，确定当前视频帧中的候选小对象区域; 以及对当前视频帧中的候选小对象区域进行滤波，以及将当前视频帧中的滤波后获得的区域确定为小对象区域。

公开(公告)号：US10257518B2

公开(公告)日：2019-04-09

申请号：US14924502

申请日：2015-10-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Zhang ,  Zhigang Yao ,  Qingpeng Xie

IPC: H04N19/137 ,  H04N19/142 ,  H04N19/87 ,  H04N19/176 ,  H04N19/109 ,  H04N19/577 ,  H04N19/103 ,  H04N19/182 ,  H04N19/186

Abstract: A video frame fade-in/fade-out detection method is provided, the detection method includes: before motion search, performing inter-frame comparison on block direct current components in some rows of a picture or performing inter-frame comparison on block direct current components in a partial area of a picture; collecting statistics on an inter-frame comparison result; determining whether fade-in/fade-out exists, to choose whether prediction is in a weighted mode; and if it is detected, by means of inter-frame comparison on block direct current components on some rows, that no global fade-in/fade-out exists, selecting a partial area within a range of some detected rows to perform inter-frame comparison on block direct current components again, and detecting local fade-in/fade-out. In the present invention, fade-in/fade-out is detected under the premise that easy hardware implementation is ensured, which saves a bandwidth and improves block match accuracy; in addition, the present invention proposes a solution for local fade-in/fade-out.

公开(公告)号：US20160050418A1

公开(公告)日：2016-02-18

申请号：US14924502

申请日：2015-10-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Zhang ,  Zhigang Yao ,  Qingpeng Xie

IPC: H04N19/137 ,  H04N19/182 ,  H04N19/186 ,  H04N19/103 ,  H04N19/176

CPC classification number: H04N19/137 ,  H04N19/103 ,  H04N19/109 ,  H04N19/142 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/577 ,  H04N19/87

Abstract: A video frame fade-in/fade-out detection method is provided, the detection method includes: before motion search, performing inter-frame comparison on block direct current components in some rows of a picture or performing inter-frame comparison on block direct current components in a partial area of a picture; collecting statistics on an inter-frame comparison result; determining whether fade-in/fade-out exists, to choose whether prediction is in a weighted mode; and if it is detected, by means of inter-frame comparison on block direct current components on some rows, that no global fade-in/fade-out exists, selecting a partial area within a range of some detected rows to perform inter-frame comparison on block direct current components again, and detecting local fade-in/fade-out. In the present invention, fade-in/fade-out is detected under the premise that easy hardware implementation is ensured, which saves a bandwidth and improves block match accuracy; in addition, the present invention proposes a solution for local fade-in/fade-out.

Abstract translation: 提供了视频帧淡入/淡出检测方法，检测方法包括：在运动搜索之前，对图像的某些行中的块直流分量执行帧间比较，或者对块直流电进行帧间比较 图片部分区域中的组件; 收集帧间比较结果统计; 确定是否存在淡入/淡出，选择预测是否处于加权模式; 并且如果检测到，通过对某些行上的块直流分量进行帧间比较，不存在全局渐隐/淡出存在，则选择一些检测行的范围内的部分区域以执行帧间 再次对块直流分量进行比较，并检测局部渐隐/淡出。 在本发明中，在确保容易的硬件实现的前提下，检测到淡入/淡出，从而节省带宽并提高块匹配精度; 此外，本发明提出了一种用于局部淡入/淡出的解决方案。

公开(公告)号：US09781382B2

公开(公告)日：2017-10-03

申请号：US14959341

申请日：2015-12-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Zhang ,  Zhigang Yao ,  Qingpeng Xie

IPC: H04N7/01 ,  H04N19/527 ,  H04N19/577 ,  H04N19/567 ,  H04N19/513 ,  H04N5/14

CPC classification number: H04N7/014 ,  H04N5/145 ,  H04N7/0117 ,  H04N7/0125 ,  H04N7/0127 ,  H04N19/521 ,  H04N19/527 ,  H04N19/567 ,  H04N19/577

Abstract: A method and an apparatus for determining a small-object region in a video frame. The method includes dividing a current video frame into at least two regions, and determining a global motion vector corresponding to each region; determining an interframe motion vector of each group of adjacent frames in multiple video frames that include the current video frame and a reference frame of the current video frame; determining a candidate small-object region in the current video frame according to the interframe motion vector of the each group of adjacent frames and the determined global motion vector corresponding to each region; and performing filtering on the candidate small-object region in the current video frame, and determining a region obtained after the filtering as a small-object region in the current video frame.