US 12,243,246 B2
Image processing method and related video processor
Yi-Hung Huang, Hsinchu County (TW); and Hsiao-En Chang, Hsinchu County (TW)
Assigned to NOVATEK Microelectronics Corp., Hsin-Chu (TW)
Filed by NOVATEK Microelectronics Corp., Hsin-Chu (TW)
Filed on Sep. 21, 2022, as Appl. No. 17/949,238.
Prior Publication US 2024/0095933 A1, Mar. 21, 2024
Int. Cl. G06T 7/246 (2017.01); G06T 7/223 (2017.01)
CPC G06T 7/248 (2017.01) [G06T 7/223 (2017.01); G06T 2207/10016 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An image processing method for a video processor, for generating an extrapolated frame according to a previous frame and a current frame, the method comprising:
projecting a plurality of motion vectors (MVs) to the extrapolated frame subsequent to the current frame;
determining whether a block of the extrapolated frame is projected by at least two of the plurality of MVs;
selecting at least two candidate MVs from the MVs projected to the block when the block is projected by at least two of the plurality of MVs;
calculating a blended MV which is a mixture of the at least two candidate MVs, and projecting the blended MV to the previous frame;
obtaining a reference MV corresponding to a position of the previous frame projected by the blended MV; and
comparing the reference MV with each of the at least two candidate MVs, to select a final MV for the block from the at least two candidate MVs.