US 11,818,369 B2
Image sensor module, image processing system, and image compression method
Wonseok Lee, Suwon-si (KR); and Yunseok Choi, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jul. 13, 2021, as Appl. No. 17/374,168.
Claims priority of application No. 10-2020-0088451 (KR), filed on Jul. 16, 2020; and application No. 10-2021-0029046 (KR), filed on Mar. 4, 2021.
Prior Publication US 2022/0021889 A1, Jan. 20, 2022
Int. Cl. H04N 19/182 (2014.01); H04N 19/176 (2014.01); H04N 19/65 (2014.01); H04N 19/167 (2014.01)
CPC H04N 19/182 (2014.11) [H04N 19/167 (2014.11); H04N 19/176 (2014.11); H04N 19/65 (2014.11)] 20 Claims
OG exemplary drawing
 
1. An image compression method comprising:
receiving pixel values of a target pixel group to be compressed in image data and reference values of reference pixels to be used for compression of the target pixel group;
generating a virtual reference map by applying an offset value to each of the reference values;
compressing the pixel values of the target pixel group based on the virtual reference map; and
generating a bitstream based on a compression result and compression information based on the virtual reference map,
wherein the compressing of the pixel values includes calculating a first difference value between a compensated reference value included in the virtual reference map and a first value of at least once of the pixel values, and calculating a second difference value between the first value and another of the pixel values.