US 12,170,767 B2
Encoding apparatus, encoding method, and program
Shota Orihashi, Musashino (JP); Shinobu Kudo, Musashino (JP); Ryuichi Tanida, Musashino (JP); and Atsushi Shimizu, Musashino (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/620,919
Filed by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
PCT Filed Jun. 21, 2019, PCT No. PCT/JP2019/024637
§ 371(c)(1), (2) Date Dec. 20, 2021,
PCT Pub. No. WO2020/255367, PCT Pub. Date Dec. 24, 2020.
Prior Publication US 2022/0337830 A1, Oct. 20, 2022
Int. Cl. H04N 19/119 (2014.01); H04N 19/149 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/119 (2014.11) [H04N 19/149 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11)] 7 Claims
OG exemplary drawing
 
1. A coding apparatus for coding an original image, the coding apparatus comprising:
a processor; and
a storage medium having computer program instructions stored thereon, when executed by the processor, perform to:
divide the original image into blocks that are a plurality of areas to acquire the plurality of blocks;
for each of the blocks, determine whether or not to determine the block as an interpolation target;
substitute a value of a pixel included in the block determined as the interpolation target, with a value that decreases a code amount of the block determined as the interpolation target;
determine the value that decreases a code amount as an average value of an interpolation target area; and
determine whether or not to determine the block that is a target of the determination as the interpolation target, using an evaluation based on an accuracy of prediction of an image of the block by intra prediction or inter prediction and a degree of naturalness of the block that is the interpolation target, the degree of naturalness corresponding to a likelihood of the block as not having been a generated image.