公开(公告)号：US09514540B2

公开(公告)日：2016-12-06

申请号：US14720074

申请日：2015-05-22

Applicant: Nokia Technologies Oy

Inventor： Kong Qiao Wang ,  Jiangwei Li ,  He Yan

IPC: G06K9/36 ,  G06T7/00 ,  G06T11/60 ,  G06K9/42 ,  G06K9/38 ,  H04N5/272 ,  H04N5/14 ,  G06K9/62

CPC classification number: G06T7/0087 ,  G06K9/38 ,  G06K9/42 ,  G06K9/6218 ,  G06T7/11 ,  G06T7/136 ,  G06T7/143 ,  G06T7/174 ,  G06T7/187 ,  G06T7/194 ,  G06T11/60 ,  G06T2207/10016 ,  G06T2207/20076 ,  H04N5/145 ,  H04N5/272

Abstract: The present invention provides a method and apparatus for processing a video frame in a video file, the method comprising: for each predetermined numerical value of one or more predetermined numerical values, comparing the video frame with a video frame spaced prior to the video frame by the predetermined numerical value of frames to obtain a first inter-frame difference; comparing the video frame with a video frame spaced after the video frame by the predetermined numerical value of frames to obtain a second inter-frame difference; and for each pixel of the video frame, obtaining a confidence map associating the video frame by the predetermined numerical value based on a smaller value of the first inter-frame difference and the second inter-frame difference; and determining, at least based on a value of each pixel in one or more of the confidence maps associated with a corresponding predetermined numerical value, whether the pixel belongs to a foreground.

Abstract translation: 本发明提供了一种用于处理视频文件中的视频帧的方法和装置，该方法包括：对于一个或多个预定数值的每个预定数值，将视频帧与在视频帧之前间隔开的视频帧进行比较， 帧的预定数值以获得第一帧间差; 将所述视频帧与在所述视频帧之间间隔的视频帧进行比例以预定的数值，以获得第二帧间差; 并且对于所述视频帧的每个像素，获得基于所述第一帧间差和所述第二帧间差的较小值将所述视频帧与所述预定数值相关联的置信图; 以及至少基于与相应的预定数值相关联的一个或多个置信图中的每个像素的值，确定所述像素是否属于前景。