US 11,991,370 B2
Intra prediction device, image encoding device, image decoding device and program
Shunsuke Iwamura, Tokyo (JP); Atsuro Ichigaya, Tokyo (JP); and Shimpei Nemoto, Tokyo (JP)
Assigned to NIPPON HOSO KYOKAI, Tokyo (JP)
Filed by NIPPON HOSO KYOKAI, Tokyo (JP)
Filed on Mar. 29, 2023, as Appl. No. 18/192,426.
Application 18/192,426 is a continuation of application No. 17/174,882, filed on Feb. 12, 2021, granted, now 11,647,206.
Application 17/174,882 is a continuation of application No. PCT/JP2019/031557, filed on Aug. 9, 2019.
Claims priority of application No. 2018-152989 (JP), filed on Aug. 15, 2018.
Prior Publication US 2023/0262233 A1, Aug. 17, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/176 (2014.01); H04N 19/159 (2014.01); H04N 19/186 (2014.01)
CPC H04N 19/159 (2014.11) [H04N 19/176 (2014.11); H04N 19/186 (2014.11)] 5 Claims
OG exemplary drawing
 
1. An intra prediction device for performing intra prediction on each of blocks obtained by dividing an original image in the form of a frame, the intra prediction device comprising:
a linear model calculator configured to calculate a linear model using decoded pixels of a first component and a second component on predetermined positions around a target block on which the intra prediction is performed;
a predictor configured to predict pixels of the second component of the target block by applying the linear model calculated by the linear model calculator to decoded pixels of the first component of the target block; and
a corrector configured to control a correction process of the predicted pixels based on the predetermined positions of the decoded pixels used by the linear model calculator to calculate the linear model.