US 12,456,173 B2
Image processing device and image processing method
Su Ram Cha, Gyeonggi-do (KR)
Assigned to SK hynix Inc., Gyeonggi-do (KR)
Filed by SK hynix Inc., Gyeonggi-do (KR)
Filed on Nov. 29, 2022, as Appl. No. 18/070,696.
Claims priority of application No. 10-2022-0086997 (KR), filed on Jul. 14, 2022.
Prior Publication US 2024/0020793 A1, Jan. 18, 2024
Int. Cl. G06T 5/70 (2024.01); G06T 5/20 (2006.01); G06T 7/246 (2017.01)
CPC G06T 5/70 (2024.01) [G06T 5/20 (2013.01); G06T 7/246 (2017.01); G06T 2207/20028 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An image processing device comprising:
a motion manager configured to generate movement information of an image sensor based on pixel values of a first frame image received from the image sensor, pixel values of a second frame image received from the image sensor prior to the first frame image, and velocity information of an inertia sensor configured to sense a velocity of the image sensor;
a similarity map generator configured to generate a similarity map indicating a weight of a noise removal filter based on the pixel values of the first frame image; and
a noise remover configured to remove temporal and spatial noises contained in the first frame image based on pixel values of the first frame image, to which the noise removal filter is applied based on the similarity map, and pixel values of the second frame image in which the movement information is reflected,
wherein the motion manager:
calculates a first movement amount by integrating the velocity information in a time domain; and
generates the movement information based on whether a sum of absolute differences between pixel values of a first region of interest (ROI) within the first frame image and pixel values of a second ROI within the second frame image is less than a preset reference value, and
wherein a position of the second ROI is moved from a position corresponding to the first ROI by the first movement amount.