公开(公告)号：US20190215518A1

公开(公告)日：2019-07-11

申请号：US15866582

申请日：2018-01-10

Applicant: QUALCOMM Incorporated

Inventor： Aravind Alagappan ,  Marc Bosch Ruiz ,  Yu Liu ,  Shyamprasad Chikkerur ,  Yunqing Chen ,  Tushar Singhal ,  Shu Lin ,  Kai Wang ,  Harikrishna Reddy

IPC: H04N19/139 ,  G06T7/269 ,  H04N19/53 ,  G06T7/207

CPC classification number: H04N19/139 ,  G06T7/207 ,  G06T7/269 ,  H04N19/53

Abstract: Methods, systems, and devices for motion analysis are described. Generally, the described techniques provide for computationally efficient and accurate motion analysis. A device may identify frames of a video frame sequence having a defined resolution. The device may downscale the frames to generate a plurality of downsampled images each having a resolution lower than the defined resolution. The device may generate a respective histogram vector for each pixel of each downsampled image and each pixel of the original frames. The device may determine a motion vector candidate based at least in part on the histogram vectors. The device may apply a filter to the motion vector candidates to determine a final motion vector and output an indication of motion between the frames of the video frame sequence based at least in part on the final motion vector for each pixel of the second frame.