公开(公告)号：US20190158113A1

公开(公告)日：2019-05-23

申请号：US16098153

申请日：2017-05-10

Applicant: NEC Corporation

Inventor： Eita KOBAYASHI

IPC: H03M7/40

Abstract: Provided is, for example, an arithmetic coding device capable of coding, at high speed, a symbol sequence including a context symbol and a bypass symbol. The arithmetic coding device updates an occurrence probability of a context symbol for a symbol sequence including the context symbol and a bypass symbol; updates a numerical range for the symbol sequence based on the updated occurrence probability; updates the updated numerical range based on a predetermined probability, the numerical range being a basis of an arithmetic code, the numerical range being updated in accordance with the occurrence probability of the context symbol and the predetermined probability for the bypass symbol; and generates an arithmetic code of the symbol sequence based on the updated numerical range in accordance with a procedure of generating the arithmetic code.

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：US20170318305A1

公开(公告)日：2017-11-02

申请号：US15523158

申请日：2015-10-20

Applicant: NEC CORPORATION

Inventor： Eita KOBAYASHI

IPC: H04N19/436 ,  H04N19/105 ,  H04N19/159 ,  H04N19/182

CPC classification number: H04N19/436 ,  H04N19/105 ,  H04N19/159 ,  H04N19/182 ,  H04N19/423 ,  H04N19/593

Abstract: [Problem] To obtain a prediction-image generation device capable of generating an intra prediction image in parallel processing while suppressing a circuit size.[Solution to Problem] A prediction-image generation device includes a storage means 1, a selection means 2, a prediction-pixel generation means 3, and a rearrangement buffer means 4. The storage means 1 holds a plurality of reference pixels. The selection means 2 selects, as a necessary reference pixel, a reference pixel used for generating an intra prediction image, based on a mode number and a pixel position. The prediction-pixel generation means 3 generates a plurality of prediction pixels in parallel processing, based on the necessary reference pixel. The rearrangement buffer means 4 generates the prediction image by rearranging the prediction pixels generated by the prediction-pixel generation means 3, based on a mode number.

公开(公告)号：US20160260200A1

公开(公告)日：2016-09-08

申请号：US14426860

申请日：2013-09-10

Applicant: NEC CORPORATION

Inventor： Eita KOBAYASHI ,  Takashi TAKENAKA

IPC: G06T5/00 ,  G06T5/10

CPC classification number: G06T5/002 ,  G06T5/10 ,  G06T2207/20016 ,  G06T2207/20064 ,  H04N1/409

Abstract: Provided is an image processing device for performing noise removal in which a plurality of noise removal actions are combined while minimizing necessary resources. The image processing device is provided with: a first frequency separation unit for separating the input image by frequency into a first low-frequency component and a first high-frequency component containing a higher-frequency component than the first low-frequency component; a second frequency separation unit for separating the first low-frequency component into a second low-frequency component and a second high-frequency component containing a higher-frequency component than the second low-frequency component; a first image transform unit for performing noise removal on the second low-frequency component and the second high-frequency component and outputting the noise-removed image as a first transformed image; and a second image transform unit for performing noise removal on the first high-frequency component and the first transformed image with less resources being allocated than those allocated to the first image transform unit, and outputting the noise-removed image as a second transformed image.

Abstract translation: 提供了一种用于执行噪声去除的图像处理装置，其中组合多个噪声去除动作同时最小化必要的资源。 图像处理装置具有：第一频率分离单元，用于将输入图像按频率分离成第一低频分量和包含比第一低频分量更高频分量的第一高频分量; 用于将第一低频分量分离为第二低频分量的第二频率分离单元和包含比第二低频分量更高频分量的第二高频分量; 第一图像变换单元，用于对所述第二低频分量和所述第二高频分量执行噪声去除并输出所述噪声去除图像作为第一变换图像; 以及第二图像变换单元，用于以比分配给第一图像变换单元的资源少的资源分配对第一高频分量和第一变换图像执行噪声去除，并输出噪声去除图像作为第二变换图像。

公开(公告)号：US20160119630A1

公开(公告)日：2016-04-28

申请号：US14888976

申请日：2014-04-22

Applicant: NEC CORPORATION

Inventor： Kenta TOKUMITSU ,  Keiichi CHONO ,  Eita KOBAYASHI

IPC: H04N19/18 ,  H04N19/70 ,  H04N19/91 ,  H04N19/96 ,  H04N19/124 ,  H04N19/14

CPC classification number: H04N19/18 ,  H04N19/124 ,  H04N19/14 ,  H04N19/146 ,  H04N19/147 ,  H04N19/647 ,  H04N19/70 ,  H04N19/91 ,  H04N19/96

Abstract: A quantization unit for quantizing orthogonal transform coefficients to calculate a coefficient level: calculates the number of value information bits of a significant coefficient level of an orthogonal transform coefficient to be processed in an image block; monitors coefficient levels output from the quantization unit in the image block from beginning to the N-th prior to the target in transmission order, and updates a state variable indicating whether or not at least one of monitored coefficient levels is significant; calculates the number of position information bits of the significant coefficient level of the orthogonal transform coefficient to be processed, based on a position of the orthogonal transform coefficient to be processed and the state variable; and sets the significant coefficient level to 0 in the case where the number of value information bits and the number of position information bits satisfy a predetermined condition.

Abstract translation: 用于量化正交变换系数以计算系数级的量化单元：计算要在图像块中处理的正交变换系数的有效系数级的值信息位的数量; 监视从发送顺序中的目标之前的开始到第N次的图像块中的量化单元输出的系数水平，并且更新指示监视的系数水平中的至少一个是否是有效的状态变量; 基于要处理的正交变换系数的位置和状态变量来计算要处理的正交变换系数的有效系数级的位置信息位的数量; 并且在值信息位的数量和位置信息位的数量满足预定条件的情况下，将有效系数电平设置为0。

公开(公告)号：US20150310593A1

公开(公告)日：2015-10-29

申请号：US14441896

申请日：2013-11-12

Applicant: NEC CORPORATION

Inventor： Eita KOBAYASHI

IPC: G06T5/00 ,  G06T5/10

CPC classification number: G06T5/002 ,  G06T5/10 ,  G06T2207/10004 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20016 ,  G06T2207/20064 ,  G06T2207/20182

Abstract: In order to make it possible to reduce the storage capacity required for noise removal processing in, for example, multi-resolution analysis and the like, without affecting signal quality, the present invention is equipped with: a storage device into which a input signal of a first channel is written, the input signal branching off into at least first and second channels; a first frequency transform processing unit which transforms the input signal read out and inputted from the storage device into a frequency-domain to output a first signal; a second frequency transform processing unit which transforms the input signal inputted from the second system into a frequency-domain to output a second signal; a third frequency transform processing unit which transforms the second input signal inputted from the second frequency transform processing unit into a frequency range to output a third and fourth signals in the first and second frequency bands; a first inverse frequency transform processing unit; and a second inverse frequency transform processing unit to which directly or indirectly inputting the third signal from the third frequency transform processing unit is directly or indirectly inputted and the fourth signal from the third frequency transform processing unit is inputted, and which outputs a third transformed signal produced through performing inverse frequency transform on the inputted signals. Therein, the first inverse frequency transform processing unit, to which the first signal from the first frequency transform processing unit is directly or indirectly inputted and the third converted signal from the second inverse frequency transform processing unit is directly or indirectly inputted, outputs a signal produced through performing inverse frequency transform on the inputted signals.

Abstract translation: 为了能够在不影响信号质量的情况下，可以减少例如多分辨率分析等中的噪声去除处理所需的存储容量，本发明装备有：存储装置，其中输入信号 写入第一通道，输入信号分支到至少第一和第二通道; 第一频率变换处理单元，将从存储装置读出并输入的输入信号变换为频域，输出第一信号; 第二频率变换处理单元，其将从第二系统输入的输入信号变换为频域以输出第二信号; 第三频率变换处理单元，其将从第二频率变换处理单元输入的第二输入信号变换为频率范围，以输出第一和第二频带中的第三和第四信号; 第一逆频变换处理单元; 并且直接或间接输入直接或间接输入来自第三频率变换处理单元的第三信号的第二逆频变换处理单元，并且输入来自第三频率变换处理单元的第四信号，并输出第三变换信号 通过对输入的信号进行逆频率变换而产生。 其中，直接或间接输入来自第一频率变换处理单元的第一信号和来自第二逆频变换处理单元的第三转换信号的第一逆频变换处理单元输出产生的信号 通过对输入的信号进行逆频率变换。