公开(公告)号：US10116944B2

公开(公告)日：2018-10-30

申请号：US15111085

申请日：2015-01-29

Applicant: NEC Corporation

Inventor： Takayuki Ishida ,  Kensuke Shimofure ,  Naoya Tsuji ,  Suguru Nagayama ,  Keiichi Chono

IPC: H04N19/167 ,  H04N19/176 ,  H04N19/40 ,  H04N19/436 ,  H04N19/513

Abstract: A video encoding device includes: first video encoding means for encoding an input image to generate first coded data; a buffer for storing the input image; coded data transcoding means for transcoding the first coded data generated by the first video encoding means, to generate second coded data; and second video encoding means for generating a prediction signal based on the second coded data supplied from the coded data transcoding means. The first video encoding means includes: dividing means for dividing the input image into a plurality of image areas; and at least one encoding means corresponding to the image areas each of which is made up of a plurality of blocks, and for performing encoding in units of blocks. The encoding means also encodes a block that is included in an image area adjacent with a dividing line in between and is located near the dividing line.

公开(公告)号：US10827201B2

公开(公告)日：2020-11-03

申请号：US16824778

申请日：2020-03-20

Applicant: NEC CORPORATION

Inventor： Takayuki Ishida ,  Keiichi Chono

IPC: H04N19/70 ,  H04N19/114 ,  H04N19/136 ,  H04N19/103 ,  H04N19/177 ,  H04N19/30 ,  H04N19/31

Abstract: In a video encoding device, a transmission section sets a value corresponding to characteristics specified by ITU-R BT.709 to 1 in the transfer characteristics syntax when the dynamic range of the video signal is a SDR (Standard Dynamic Range), and sets a value corresponding to one of characteristics specified by HLG (Hybrid Log Gamma) to 18 or a value corresponding to one of characteristics specified by PQ (Perceptual Quantizer) to 16 when the dynamic range of the video signal is a HDR (High Dynamic Range).

公开(公告)号：US10298941B2

公开(公告)日：2019-05-21

申请号：US15111239

申请日：2015-01-22

Applicant: NEC Corporation

Inventor： Naoya Tsuji ,  Takayuki Ishida ,  Suguru Nagayama ,  Kensuke Shimofure ,  Keiichi Chono

IPC: H04N19/40 ,  H04N19/70 ,  H04N19/91 ,  H04N19/11 ,  H04N19/176 ,  H04N19/159 ,  H04N19/147 ,  H04N19/96

Abstract: A video encoding device includes a coded data transcoding section 131 for transcoding first coded data generated by a first video encoding section 11 to generate second coded data, wherein the coded data transcoding section 131 includes: a prediction mode adding section 1312 for generating intra prediction modes unusable by the first video encoding section 11 and usable by a second video encoding section 14; and a prediction mode selecting section 1313 for evaluating the prediction modes generated by the prediction mode adding section 1312 and, based on the evaluation results, selecting a prediction mode used by the second video encoding section 14.