公开(公告)号：US20200053377A1

公开(公告)日：2020-02-13

申请号：US16100772

申请日：2018-08-10

Applicant: Apple Inc.

Inventor： Muge Wang ,  Sheng Lin ,  Weichun Ku ,  Hsiao-Chen Chang ,  Yixiang Tao

IPC: H04N19/513 ,  H04N19/176 ,  G06T5/00 ,  H04N1/60 ,  G06T3/00

Abstract: Embodiments of the present disclosure relate to generating motion vectors. An image signal processor includes a statistics circuit and a vector correlation analysis circuit. The statistics circuit determines image statistics such as vectors representing sums of pixel values of rows or columns of blocks of an image. Additionally, the statistics circuit may mix or aggregate sums of multiple color components. The vector correlation analysis performs cross-correlation between vectors of a current image and reference vectors of a prior image to determine cross-correlation scores. The vector correlation analysis generates a motion vector by identifying shifts in horizontal and vertical directions corresponding to peak values of cross-correlation scores.

公开(公告)号：US10547863B1

公开(公告)日：2020-01-28

申请号：US16100772

申请日：2018-08-10

Applicant: Apple Inc.

Inventor： Muge Wang ,  Sheng Lin ,  Weichun Ku ,  Hsiao-Chen Chang ,  Yixiang Tao

IPC: H04N19/513 ,  H04N19/176 ,  G06T3/00 ,  H04N1/60 ,  G06T5/00

Abstract: Embodiments of the present disclosure relate to generating motion vectors. An image signal processor includes a statistics circuit and a vector correlation analysis circuit. The statistics circuit determines image statistics such as vectors representing sums of pixel values of rows or columns of blocks of an image. Additionally, the statistics circuit may mix or aggregate sums of multiple color components. The vector correlation analysis performs cross-correlation between vectors of a current image and reference vectors of a prior image to determine cross-correlation scores. The vector correlation analysis generates a motion vector by identifying shifts in horizontal and vertical directions corresponding to peak values of cross-correlation scores.