公开(公告)号：US09928426B1

公开(公告)日：2018-03-27

申请号：US15267875

申请日：2016-09-16

申请人： Hong Kong Applied Science and Technology Research Institute Company Limited

发明人： Hailiang Li ,  Zhi Bin Lei ,  Yang Liu ,  Man Yau Chiu ,  Kangheng Wu

IPC分类号： G06K9/46 ,  G06K9/00 ,  G06K9/32

CPC分类号： G06K9/00785 ,  G06K9/00771 ,  G06K9/325

摘要： A method for a vehicle management system with a perspective view camera generating perspective images of vehicles in a traffic direction, including performing an anti-perspective transform on the perspective images; separating each anti-perspective image into sub-images along one of a radial direction and a tangential direction relative to the traffic direction; determining a scale factor for each sub-image based upon measuring a scale of each vehicle at plural positions in one image using a frame difference method performing a scale transform for each sub-image using the corresponding scale factors for the sub-image; combining each of the scale transformed sub-images for each vehicle into corresponding enhanced anti-perspective images; performing vehicle detection for each vehicle based a combination of the enhanced anti-perspective images in which tracking is enhanced with an optimized detection box size range determined by the enhanced anti-perspective images; and performing vehicle tracking for each vehicle based on the combination of the enhanced anti-perspective images in which detecting is enhanced with the optimized detection box size range determined by the enhanced anti-perspective images.

公开(公告)号：US09219924B2

公开(公告)日：2015-12-22

申请号：US13951471

申请日：2013-07-26

申请人： Hong Kong Applied Science and Technology Research Institute Company Limited

发明人： Man Yau Chiu ,  Zhi Bin Lei

IPC分类号： H04N19/34 ,  H04N19/51 ,  H04N19/85 ,  H04N19/33 ,  H04N19/59

CPC分类号： H04N19/85 ,  H04N19/33 ,  H04N19/59

摘要： This invention discloses an encoding apparatus and a decoding apparatus for scalable video coding such that a non-scalable video decoder is usable for decoding a scalable video bit-stream comprising a base layer bit-stream and an enhancement layer bit-stream. In one embodiment, a source video frame is downscaled to give a downscaled video frame, which is then encoded into the base layer bit-stream. The difference between the source video frame and an up-scaled video frame reconstructed from the downscaled video frame in the base layer bit-stream yields a residual frame. The residual frame is partitioned into a number of residual sub-frames each having a resolution that is the downscaled video frame's resolution. The residual sub-frames are encoded into the enhancement layer bit-stream. Thereby, a non-scalable encoder is usable to encode both the downscaled video frame and the residual sub-frames, allowing both bit-streams to be decodable by employing only one non-scalable decoder.

摘要翻译： 本发明公开了一种用于可缩放视频编码的编码装置和解码装置，使得非可分级视频解码器可用于解码包括基本层比特流和增强层比特流的可分级视频比特流。 在一个实施例中，源视频帧被缩减以给出缩小的视频帧，然后将其编码为基本层比特流。 源视频帧与从基本层位流中的缩小视频帧重建的上调视频帧之间的差异产生残余帧。 剩余帧被划分成多个剩余子帧，每个子帧具有作为缩小视频帧分辨率的分辨率。 残余子帧被编码到增强层比特流中。 因此，非可缩放编码器可用于对缩小的视频帧和残余子帧进行编码，允许通过仅使用一个不可扩展解码器来解码两个比特流。