US 12,445,644 B2
Image processing device and image processing method
Kenji Kondo, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/616,193
Filed by Sony Group Corporation, Tokyo (JP)
PCT Filed May 28, 2020, PCT No. PCT/JP2020/021034
§ 371(c)(1), (2) Date Dec. 3, 2021,
PCT Pub. No. WO2020/250693, PCT Pub. Date Dec. 17, 2020.
Claims priority of provisional application 62/859,838, filed on Jun. 11, 2019.
Prior Publication US 2022/0321910 A1, Oct. 6, 2022
Int. Cl. H04N 7/12 (2006.01); H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/176 (2014.01); H04N 19/593 (2014.01)
CPC H04N 19/593 (2014.11) [H04N 19/105 (2014.11); H04N 19/132 (2014.11); H04N 19/176 (2014.11)] 10 Claims
OG exemplary drawing
 
1. An image processing device, comprising:
circuitry configured to generate a predicted image of a current prediction block by performing interpolation processing using an original pixel of a reference image as a left adjacent pixel adjacent to a left of the predicted image of the current prediction block to be encoded, when performing intra prediction using a matrix operation;
the circuitry is configured to select whether to use the original pixel of the reference image or whether to use a down-sampled pixel as the left adjacent pixel adjacent to the left of the predicted image of the current prediction block, according to a prediction mode of the intra prediction in the interpolation processing, wherein the down-sampled pixel is a pixel obtained by averaging the original pixel; and
an encoder configured to encode the current prediction block using the predicted image generated by the circuitry, wherein
the circuitry selects whether to use the original pixel of the reference image or whether to use the down-sampled pixel as an adjacent pixel adjacent to the predicted image of the current prediction block when the prediction mode of the intra prediction includes information indicating directional prediction, and
the circuitry uses the original pixel as the left adjacent pixel when a reference direction of the directional prediction is close to a lateral direction.