US 12,333,698 B2
Image sensing device
Cheol Jon Jang, Gyeonggi-do (KR)
Assigned to SK hynix Inc., Gyeonggi-do (KR)
Filed by SK hynix Inc., Gyeonggi-do (KR)
Filed on May 28, 2021, as Appl. No. 17/333,644.
Claims priority of application No. 10-2020-0170942 (KR), filed on Dec. 9, 2020.
Prior Publication US 2022/0180498 A1, Jun. 9, 2022
Int. Cl. G06T 7/00 (2017.01); H04N 23/80 (2023.01); H04N 25/76 (2023.01); H10F 39/00 (2025.01); H10F 39/18 (2025.01)
CPC G06T 7/0004 (2013.01) [H04N 23/80 (2023.01); H04N 25/76 (2023.01); H10F 39/18 (2025.01); H10F 39/803 (2025.01); G06T 2207/30108 (2013.01)] 22 Claims
OG exemplary drawing
 
17. An image sensing device comprising:
an image sensor; and
an image processor that performs the following;
analyzing, by a kernel analysis part, a texture of a target kernel and whether a defective image value is present in the target kernel, and generating a control signal corresponding to a result of the analysis, based on first and second image values of the target kernel; and
correcting, by a kernel correction part, the defective image value of the target kernel based on at least the first and second image values of the target kernel and the control signal,
wherein the kernel correction part is enabled when the target kernel is a flat region or an edge region and the defective image value is present in the target kernel,
wherein the kernel correction part is disabled when the target kernel is the flat region or the edge region and the defective image value is not present in the target kernel, and
wherein the kernel correction part is disabled when the target kernel is a texture region that is more complex than the edge region,
wherein the kernel analysis part performs the following:
calculating, by a first calculation block, a first variance value based on the first image value and the second image values;
calculating, by a second calculation block, a second variance value based on the second image values;
calculating, by a third calculation block, a third variance value based on the first and second variance values; and
generating, with a control block, the control signal based on the first to third variance values.