公开(公告)号：US20160330464A1

公开(公告)日：2016-11-10

申请号：US15107689

申请日：2015-01-27

Applicant: NEC Corporation

Inventor： Kensuke SHIMOFURE ,  Naoya TSUJI ,  Takayuki ISHIDA ,  Suguru NAGAYAMA ,  Keiichi CHONO

IPC: H04N19/42 ,  H04N19/40 ,  H04N19/176 ,  H04N19/70 ,  H04N19/156

CPC classification number: H04N19/42 ,  H04N19/103 ,  H04N19/156 ,  H04N19/157 ,  H04N19/176 ,  H04N19/18 ,  H04N19/194 ,  H04N19/40 ,  H04N19/70

Abstract: A video encoding device includes: a first video encoding section 11 for encoding an input image to generate first coded data; a buffer 12 for storing the input image; a coded data transcoding/merging section 13 for transcoding and then merging the first coded data generated by the first video encoding section 11, to generate second coded data; and a second video encoding section 14 for estimating a syntax value for encoding the input image stored in the buffer 12 based on the second coded data supplied from the coded data transcoding/merging section 13, to generate a bitstream. The first video encoding section 11 has a function of handling a first encoding process included in a second encoding process handled by the second video encoding section 14. The coded data transcoding/merging section 13, in the case where a predetermined condition is met, merges frequency transform/quantization blocks in the second encoding process.

Abstract translation: 视频编码装置包括：第一图像编码部分11，用于对输入图像进行编码以产生第一编码数据; 用于存储输入图像的缓冲器12; 编码数据代码转换/合并部分13，用于对由第一视频编码部分11产生的第一编码数据进行代码转换，然后合并，以产生第二编码数据; 以及第二视频编码部分14，用于基于从编码数据代码转换/合并部分13提供的第二编码数据估计用于对存储在缓冲器12中的输入图像进行编码的语法值，以生成比特流。 第一视频编码部分11具有处理由第二视频编码部分14处理的第二编码处理中包括的第一编码处理的功能。编码数据代码转换/合并部分13在满足预定条件的情况下合并 第二编码处理中的频率变换/量化块。

公开(公告)号：US20230156206A1

公开(公告)日：2023-05-18

申请号：US17802378

申请日：2021-02-24

Applicant: NEC Corporation

Inventor： Takayuki ISHIDA ,  Tatsuji MORIYOSHI ,  Kenta IIDA

IPC: H04N19/436 ,  H04N19/146

CPC classification number: H04N19/436 ,  H04N19/146

Abstract: In order to make it possible to perform compression encoding of video more quickly and by an easier method, processing relating to the compression encoding of the video that has a greater speed-increasing effect due to parallel processing is performed by a parallel processing device that can execute the parallel processing more rapidly than a
CPU, processing with a high computational load and processing that requires high-speed processing based on sequential processing are performed by a sequential processing device that can execute the sequential processing more rapidly than the CPU, and processing that involves a higher frequency of alteration of content of an algorithm is performed by the CPU.

公开(公告)号：US20200221132A1

公开(公告)日：2020-07-09

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 ,  H04N19/31 ,  H04N19/177 ,  H04N19/30 ,  H04N19/103

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：US20160345013A1

公开(公告)日：2016-11-24

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 ,  H04N19/513 ,  H04N19/40

CPC classification number: 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.

Abstract translation: 视频编码装置包括：第一视频编码装置，用于对输入图像进行编码以产生第一编码数据; 用于存储输入图像的缓冲器; 编码数据转码装置，用于对由第一视频编码装置生成的第一编码数据进行代码转换，以产生第二编码数据; 以及第二视频编码装置，用于根据从编码数据代码转换装置提供的第二编码数据产生预测信号。 第一视频编码装置包括：分割装置，用于将输入图像分割成多个图像区域; 以及对应于由多个块组成的图像区域的至少一个编码装置，并且用于以块为单位进行编码。 编码装置还对包含在与分割线相邻的图像区域中的块进行编码并位于分割线附近。

公开(公告)号：US20180352260A1

公开(公告)日：2018-12-06

申请号：US15777980

申请日：2016-11-14

Applicant: NEC CORPORATION

Inventor： Takayuki ISHIDA ,  Keiichi CHONO

IPC: H04N19/70 ,  H04N19/30 ,  H04N19/103

CPC classification number: H04N19/114 ,  H04N19/136 ,  H04N19/177 ,  H04N19/31 ,  H04N19/70

Abstract: A video encoding device is a video encoding device for appropriately selecting a scalable encoding structure from a plurality of scalable encoding structures to generate a bitstream, using dynamic range-related video signal information, and includes an encoding section for selecting the scalable encoding structure capable of transmitting the dynamic range-related video signal information for switching a dynamic range, when a video signal to be encoded is switched from an SDR (a standard dynamic range) signal to an HDR (a high dynamic range) signal or switched from the HDR signal to the SDR signal in a temporal direction.

公开(公告)号：US20160301941A1

公开(公告)日：2016-10-13

申请号：US14772287

申请日：2014-07-25

Applicant: NEC CORPORATION

Inventor： Keiichi CHONO ,  Seiya SHIBATA ,  Takayuki ISHIDA ,  Kensuke SHIMOFURE

IPC: H04N19/40 ,  H04N19/146

CPC classification number: H04N19/40 ,  H04N19/103 ,  H04N19/146 ,  H04N19/157 ,  H04N19/176 ,  H04N19/194

Abstract: A video encoding device includes: a first video encoding section 11 for encoding an input image to generate first coded data; a buffer 12 for storing the input image; a coded data transcoding/merging section 13 for transcoding and then merging the first coded data generated by the first video encoding section 11, to generate second coded data; and a second video encoding section 14 for estimating a syntax value for encoding the input image stored in the buffer 12 based on the second coded data supplied from the coded data transcoding/merging section 13, to generate a bitstream. The first video encoding section 11 has a function of handling a first encoding process included in a second encoding process handled by the second video encoding section 14. The coded data transcoding/merging section 13 transcodes coded data by the first encoding process to coded data corresponding to the second encoding process.

Abstract translation: 视频编码装置包括：第一图像编码部分11，用于对输入图像进行编码以产生第一编码数据; 用于存储输入图像的缓冲器12; 编码数据代码转换/合并部分13，用于对由第一视频编码部分11产生的第一编码数据进行代码转换，然后合并，以产生第二编码数据; 以及第二视频编码部分14，用于基于从编码数据代码转换/合并部分13提供的第二编码数据估计用于对存储在缓冲器12中的输入图像进行编码的语法值，以生成比特流。 第一视频编码部分11具有处理包括在由第二视频编码部分14处理的第二编码处理中的第一编码处理的功能。编码数据代码转换/合并部分13通过第一编码处理将编码数据转码成对应于编码数据 到第二编码过程。

公开(公告)号：US20180027256A1

公开(公告)日：2018-01-25

申请号：US15541068

申请日：2015-12-16

Applicant: NEC CORPORATION

Inventor： Seiya SHIBATA ,  Takayuki ISHIDA ,  Keiichi CHONO ,  Noriaki SUZUKI ,  Eita KOBAYASHI ,  Kenta TOKUMITSU

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/96 ,  H04N19/142 ,  H04N19/14 ,  H04N19/159 ,  H04N19/124

CPC classification number: H04N19/52 ,  H04N19/119 ,  H04N19/124 ,  H04N19/14 ,  H04N19/142 ,  H04N19/149 ,  H04N19/15 ,  H04N19/159 ,  H04N19/176 ,  H04N19/177 ,  H04N19/96

Abstract: A video encoding device includes: an encoding parameter search unit for receiving input video and outputting an encoding parameter; an encoder for receiving the input video and the encoding parameter and performing encoding; a code amount control unit for deciding a block size enlargement parameter indicating at least a degree of enlargement, based on a target code amount and encoding status information; and a block size enlargement unit for enlarging a block size of the input video based on the block size enlargement parameter.

公开(公告)号：US20160337652A1

公开(公告)日：2016-11-17

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 ,  H04N19/159 ,  H04N19/91 ,  H04N19/11

CPC classification number: H04N19/40 ,  H04N19/11 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70 ,  H04N19/91 ,  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.

Abstract translation: 视频编码装置包括编码数据代码转换部分131，用于对由第一视频编码部分11产生的第一编码数据进行代码转换，以产生第二编码数据，其中编码数据代码转换部分131包括：预测模式加法部分1312，用于产生帧内预测模式 可由第一视频编码部分11使用并且可被第二视频编码部分14使用; 以及预测模式选择部分1313，用于评估由预测模式添加部分1312生成的预测模式，并且基于评估结果，选择由第二视频编码部分14使用的预测模式。

公开(公告)号：US20160323579A1

公开(公告)日：2016-11-03

申请号：US15107978

申请日：2015-02-04

Applicant: NEC CORPORATION

Inventor： Suguru NAGAYAMA ,  Keiichi CHONO ,  Takayuki ISHIDA ,  Naoya TSUJI ,  Kensuke SHIMOFURE

IPC: H04N19/126 ,  H04N19/176 ,  H04N19/154

CPC classification number: H04N19/126 ,  H04N19/136 ,  H04N19/154 ,  H04N19/176 ,  H04N19/426

Abstract: A video encoding device includes control means 12 for supplying parameters used in the quantization process to the quantizing means 11, wherein the quantizing means 11 includes: a two-dimensional table 13 storing result values of calculation which is a part of the quantization process, each of the result values is calculated by using a value based on a quantization parameter and a quantization weighting coefficient used for visual image quality control; and computing means 14 for inputting a result value corresponding to two parameters supplied from the control means 12, and generating the quantization coefficient by using the input result value.

Abstract translation: 视频编码装置包括用于将量化处理中使用的参数提供给量化装置11的控制装置12，其中量化装置11包括：存储作为量化处理的一部分的计算结果值的二维表13， 通过使用基于用于视觉图像质量控制的量化参数和量化加权系数的值来计算结果值; 以及计算装置14，用于输入与从控制装置12提供的两个参数对应的结果值，并通过使用输入结果值产生量化系数。