公开(公告)号：US20170223369A1

公开(公告)日：2017-08-03

申请号：US15412603

申请日：2017-01-23

申请人： Axis AB

发明人： Fredrik Pihl ,  Mats Lund

IPC分类号： H04N19/436 ,  H04N19/105 ,  H04N19/159

CPC分类号： H04N19/436 ,  H04N19/105 ,  H04N19/107 ,  H04N19/154 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/194 ,  H04N19/86

摘要： A method of encoding digital video data corresponding to a sequence of input video frames is disclosed. The input video frames are encoded into a sequence of output video frames. The method comprises encoding a first input video frame in a first encoder instance using intra-frame encoding to produce a first intra-frame, decoding the first intra-frame to produce a first decoded frame, encoding the first decoded frame in a second encoder instance to produce a first output video frame. A digital video encoding system is also disclosed, as well as a camera comprising such a system, and a computer program product for performing the method.

公开(公告)号：US10341675B2

公开(公告)日：2019-07-02

申请号：US15412603

申请日：2017-01-23

申请人： Axis AB

发明人： Fredrik Pihl ,  Mats Lund

IPC分类号： H04N19/436 ,  H04N19/105 ,  H04N19/159 ,  H04N19/107 ,  H04N19/154 ,  H04N19/194 ,  H04N19/86 ,  H04N19/172 ,  H04N19/176

摘要： A method of encoding digital video data corresponding to a sequence of input video frames is disclosed. The input video frames are encoded into a sequence of output video frames. The method comprises encoding a first input video frame in a first encoder instance using intra-frame encoding to produce a first intra-frame, decoding the first intra-frame to produce a first decoded frame, encoding the first decoded frame in a second encoder instance to produce a first output video frame. A digital video encoding system is also disclosed, as well as a camera comprising such a system, and a computer program product for performing the method.

公开(公告)号：US11477459B2

公开(公告)日：2022-10-18

申请号：US17488349

申请日：2021-09-29

申请人： Axis AB

发明人： Fredrik Pihl ,  Mats Lund

IPC分类号： H04N19/146 ,  H04N19/103 ,  H04N19/172 ,  H04N19/176 ,  H04N7/18

摘要： An image processing device, a camera and a method of encoding a sequence of video images into a single video stream with dynamic bitrate are provided. The sequence of video images is encoded into frames of a base layer of the single video stream using a base layer resolution and a base layer compression level. Video images of the sequence of video images corresponding to respective times before detecting an event trigger are encoded into a first set of frames of an extended layer of the single video stream. The event trigger is detected and upon detecting the event trigger, video images of the sequence of video images corresponding to respective times after detecting the event trigger are encoded into a second set of frames of the extended layer using a higher resolution than the base layer resolution or a lower compression level than the base layer compression level.