US 11,991,367 B2
Device and method for allocating code amounts to intra prediction modes
Shimpei Nemoto, Tokyo (JP); Shunsuke Iwamura, Tokyo (JP); and Atsuro Ichigaya, Tokyo (JP)
Assigned to NIPPON HOSO KYOKAI, Tokyo (JP)
Filed by NIPPON HOSO KYOKAI, Tokyo (JP)
Filed on Jun. 8, 2022, as Appl. No. 17/805,961.
Application 17/805,961 is a continuation of application No. 17/036,931, filed on Sep. 29, 2020, granted, now 11,388,414.
Application 17/036,931 is a continuation of application No. PCT/JP2019/014365, filed on Mar. 29, 2019.
Claims priority of application No. 2018-066711 (JP), filed on Mar. 30, 2018.
Prior Publication US 2022/0303543 A1, Sep. 22, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/146 (2014.01); H04N 19/105 (2014.01); H04N 19/11 (2014.01); H04N 19/119 (2014.01); H04N 19/13 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/46 (2014.01); H04N 19/593 (2014.01)
CPC H04N 19/146 (2014.11) [H04N 19/105 (2014.11); H04N 19/11 (2014.11); H04N 19/119 (2014.11); H04N 19/13 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/46 (2014.11); H04N 19/593 (2014.11)] 2 Claims
OG exemplary drawing
 
1. An image decoding device for decoding blocks obtained by dividing an image of a frame included in a video, the image decoding device comprising:
a decoder circuitry configured to acquire identification information of an intra prediction mode by decoding encoded data generated by an image encoding device;
a most probable modes (MPM) generator circuitry configured to generate most probable modes list including a plurality of intra prediction modes applied to peripheral blocks of a target block of intra prediction;
a feature amount calculator circuitry configured to calculate feature amounts of each of a plurality of reference pixel groups adjacent to the target block, wherein the plurality of reference pixel groups includes a plurality of reference pixel;
an allocation changer circuitry configured to modify the most probable modes list based on a result of comparing each of the feature amounts of the plurality of reference pixel groups, and change allocation of code amounts to each of the most probable mode; and
a mode specifier circuitry configured to specify the intra prediction mode based on the decoded identification information and the most probable modes.