US 11,836,935 B2
Method and apparatus for detecting motion deviation in a video
John Madsen, Regstrup (DK)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Nov. 23, 2021, as Appl. No. 17/534,245.
Application 17/534,245 is a continuation of application No. 16/209,721, filed on Dec. 4, 2018, granted, now 11,216,957.
Claims priority of application No. 1721334 (GB), filed on Dec. 19, 2017.
Prior Publication US 2022/0084216 A1, Mar. 17, 2022
Int. Cl. G06T 7/246 (2017.01); G08B 13/196 (2006.01); G06T 7/20 (2017.01); G06V 20/40 (2022.01); G06V 20/52 (2022.01)
CPC G06T 7/251 (2017.01) [G06T 7/20 (2013.01); G06V 20/41 (2022.01); G06V 20/52 (2022.01); G08B 13/1961 (2013.01); G06T 2207/20021 (2013.01); G06V 20/44 (2022.01); G08B 13/19613 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for a video, comprising:
generating, from a set of images, a motion grid comprising a plurality of elements by storing in each element of the motion grid an indication of whether there is a change between corresponding elements of the set of images, wherein the indication is determined based on whether a number of changed pixels between the corresponding elements exceeds a predetermined threshold; and
providing a motion model including a plurality of elements, wherein the motion model is generated by accumulating information in units of corresponding elements each of which is generated in the generating from a different one of the images and has the same location in the motion grid.