US 12,113,957 B2
Program, device, and method for generating significant video stream from original video stream
Masaru Sugano, Tokyo (JP); Hiromasa Yanagihara, Tokyo (JP); and Yasuyuki Nakajima, Tokyo (JP)
Assigned to KDDI CORPORATION, Tokyo (JP)
Appl. No. 17/609,484
Filed by KDDI CORPORATION, Tokyo (JP)
PCT Filed Feb. 12, 2020, PCT No. PCT/JP2020/005285
§ 371(c)(1), (2) Date Nov. 8, 2021,
PCT Pub. No. WO2020/230385, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 2019-091895 (JP), filed on May 15, 2019.
Prior Publication US 2022/0321873 A1, Oct. 6, 2022
Int. Cl. H04N 19/103 (2014.01); H04N 19/176 (2014.01); H04N 19/177 (2014.01)
CPC H04N 19/103 (2014.11) [H04N 19/176 (2014.11); H04N 19/177 (2014.11)] 17 Claims
OG exemplary drawing
 
1. A non-transitory computer-readable recording medium storing a program, the program causing a computer to function as a device for generating a significant video stream from a captured and coded original video stream, the program causing the computer to perform:
extracting a coding parameter of each macroblock for each frame from the original video stream;
selecting the macroblock that has a coding parameter satisfying a predetermined condition, as a significant macroblock; and
generating the significant video stream, in which a group of frames of the original video stream temporally synchronized with frames of coding parameters in significant macroblocks are combined in time series, wherein
the coding parameter extracted from the macroblock and used for the predetermined condition includes
an angle of a motion vector in a direction of a vanishing point with an associated temporal change.