公开(公告)号：US09532073B2

公开(公告)日：2016-12-27

申请号：US14931181

申请日：2015-11-03

Applicant: NEC CORPORATION

Inventor： Keiichi Chono ,  Yuzo Senda ,  Junji Tajime ,  Hirofumi Aoki ,  Kenta Senzaki

IPC: H04N7/12 ,  H04N19/60 ,  H04N19/182 ,  H04N19/17 ,  H04N19/91

CPC classification number: H04N19/44 ,  H04N19/00781 ,  H04N19/12 ,  H04N19/156 ,  H04N19/17 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/46 ,  H04N19/60 ,  H04N19/61 ,  H04N19/91

Abstract: A video encoding device includes: pixel bit length increasing means for increasing a pixel bit length of an input image based on pixel bit length increase information; transform means for transforming output data of the pixel bit length increasing means; entropy encoding means for entropy-encoding output data of the transform means; non-compression encoding means for non-compression-encoding input data; multiplexed data selection means for selecting output data of the entropy encoding means or output data of the non-compression encoding means; and multiplexing means for multiplexing the pixel bit length increase information in a bitstream, wherein a pixel bit length of an image corresponding to the output data of the entropy encoding means and a pixel bit length of an image corresponding to the output data of the non-compression encoding means are different from each other.

Abstract translation: 视频编码装置包括：像素比特长度增加装置，用于基于像素比特长度增加信息增加输入图像的像素比特长度; 变换装置，用于变换像素位长度增加装置的输出数据; 熵编码装置，用于对变换装置的输出数据进行熵编码; 用于非压缩编码输入数据的非压缩编码装置; 多路复用数据选择装置，用于选择熵编码装置的输出数据或输出非压缩编码装置的数据; 以及复用装置，用于将比特流中的像素比特长度增加信息进行多路复用，其中与熵编码装置的输出数据相对应的图像的像素比特长度和与非熵编码装置的输出数据相对应的图像的像素比特长度， 压缩编码装置彼此不同。

公开(公告)号：US09514383B2

公开(公告)日：2016-12-06

申请号：US14764267

申请日：2014-02-13

Applicant: NEC Corporation

Inventor： Kenta Senzaki

IPC: G06K9/48 ,  G06K9/52 ,  H04N1/409 ,  G06T5/00 ,  G06K9/46

CPC classification number: G06K9/52 ,  G06K9/4609 ,  G06T5/00 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/20012 ,  G06T2207/20192 ,  H04N1/4092

Abstract: An image processing method separates an input image into a skeleton component, and residual component. In the method a local variation amount, which is a variation amount between a target pixel and a pixel adjacent to the target pixel, is calculated; a skeleton component extraction filter weight is calculated based on the local variation amount; an image feature amount of a gradient direction of a pixel value around the target pixel, and an image feature amount of a gradient strength of the pixel value around the target pixel, are calculated; the skeleton component extraction filter weight is corrected based on these image feature amount; a skeleton component extraction filter coefficient is calculated based on the corrected skeleton component extraction filter weight; and the skeleton component is extracted by applying skeleton component extraction filtering to the target pixel using the calculated skeleton component extraction filter coefficient.

Abstract translation: 图像处理方法将输入图像分割为骨架分量，并将剩余分量分离。 在该方法中，计算作为目标像素与与目标像素相邻的像素之间的变化量的局部变化量; 基于局部变化量计算骨架成分提取过滤器重量; 计算目标像素周围的像素值的倾斜方向的图像特征量以及目标像素周围的像素值的梯度强度的图像特征量; 基于这些图像特征量来校正骨架分量提取滤波器权重; 基于校正的骨架成分提取滤光器重量计算骨架成分提取过滤器系数; 并使用所计算出的骨架成分提取滤波器系数，通过对目标像素应用骨架成分提取滤波来提取骨架成分。

公开(公告)号：US09510011B2

公开(公告)日：2016-11-29

申请号：US14931271

申请日：2015-11-03

Applicant: NEC CORPORATION

Inventor： Keiichi Chono ,  Yuzo Senda ,  Junji Tajime ,  Hirofumi Aoki ,  Kenta Senzaki

IPC: H04N7/12 ,  H04N19/44 ,  H04N19/182 ,  H04N19/172 ,  H04N19/91

CPC classification number: H04N19/44 ,  H04N19/00781 ,  H04N19/12 ,  H04N19/156 ,  H04N19/17 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/46 ,  H04N19/60 ,  H04N19/61 ,  H04N19/91

Abstract: A video encoding device includes: pixel bit length increasing means for increasing a pixel bit length of an input image based on pixel bit length increase information; transform means for transforming output data of the pixel bit length increasing means; entropy encoding means for entropy-encoding output data of the transform means; non-compression encoding means for non-compression-encoding input data; multiplexed data selection means for selecting output data of the entropy encoding means or output data of the non-compression encoding means; and multiplexing means for multiplexing the pixel bit length increase information in a bitstream, wherein a pixel bit length of an image corresponding to the output data of the entropy encoding means and a pixel bit length of an image corresponding to the output data of the non-compression encoding means are different from each other.

公开(公告)号：US09135685B2

公开(公告)日：2015-09-15

申请号：US14397381

申请日：2013-04-24

Applicant: NEC Corporation

Inventor： Kenta Senzaki ,  Masato Tsukada ,  Hiroaki Kawaguchi

IPC: G06T5/00 ,  G06T5/20

CPC classification number: G06T5/002 ,  G06T5/20 ,  G06T2207/20016 ,  G06T2207/20192

Abstract: A method includes: calculating a pixel statistical value and edge of pixels for each of areas of a multi-layer, the areas each containing a target pixel and having a successively decreased range; correcting the edge based on a pixel statistical value of an area that is wider than an area of a specific layer; correcting difference between a pixel statistical value of the specific layer and the pixel statistical value of a layer that is wider than the specific layer using the post-correction edge; correcting the pixel statistical value of the specific layer using post-correction difference and the pixel statistical value of the layer that is wider than the specific layer; and correcting the target pixel by repeating correction of the pixel statistical value successively in each layer until the area reduces its range from the maximum range to the minimum range.

Abstract translation: 一种方法包括：计算多层的每个区域的像素统计值和像素边缘，每个区域包含目标像素并具有连续减小的范围; 基于比特定层的区域宽的区域的像素统计值来校正边缘; 使用后校正边缘校正特定层的像素统计值和比特定层宽的层的像素统计值之间的差异; 使用校正后差异和比特定层宽的层的像素统计值来校正特定层的像素统计值; 并且通过在每个层中连续地重复对像素统计值的校正来校正目标像素，直到该区域将其范围从最大范围缩小到最小范围。

公开(公告)号：US11943449B2

公开(公告)日：2024-03-26

申请号：US18099020

申请日：2023-01-19

Applicant: NEC Corporation

Inventor： Kenta Senzaki ,  Yuzo Senda ,  Keiichi Chono ,  Hirofumi Aoki

IPC: H04N19/103 ,  H04N19/109 ,  H04N19/119 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/503 ,  H04N19/61 ,  H04N19/70 ,  H04N19/65 ,  H04N19/91

CPC classification number: H04N19/147 ,  H04N19/103 ,  H04N19/109 ,  H04N19/119 ,  H04N19/157 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/503 ,  H04N19/61 ,  H04N19/70 ,  H04N19/65 ,  H04N19/91

Abstract: A video decoding device for decoding video using inter prediction includes entropy decoding means for decoding an inter-PU partition type syntax; and decoding control means for making the entropy decoding means decode the inter-PU (Prediction Unit) partition type syntax of a CU (Coding Unit) to be decoded, based on whether the prediction mode of the CU to be decoded is an inter prediction mode and whether a size of the CU to be decoded is equal to a predetermined minimum inter-PU size.

公开(公告)号：US11681036B2

公开(公告)日：2023-06-20

申请号：US16958339

申请日：2017-12-28

Applicant: NEC CORPORATION

Inventor： Shreya Sharma ,  Yuzo Senda ,  Hirofumi Aoki ,  Kenta Senzaki

IPC: G01S13/90 ,  G01S7/40 ,  G01S7/41 ,  G06N20/10

CPC classification number: G01S13/9027 ,  G01S7/40 ,  G01S7/417 ,  G06N20/10

Abstract: An object is to provide an image processing apparatus capable of appropriately distinguishing various object types. An image processing apparatus (1C) comprising: detector means (11) for detecting objects in an input SAR image and generating object chips; projection calculator means (12) for calculating projection information of each object using SAR geometry; feature learner means (14) for learning, for each object, a relation between an object chip and its projection information, and thereby generating learnt features of object chips; and classifier means (15) for classifying object chips into classes based on the learnt features of object chips.

公开(公告)号：US11665352B2

公开(公告)日：2023-05-30

申请号：US17685543

申请日：2022-03-03

Applicant: NEC Corporation

Inventor： Kenta Senzaki ,  Yuzo Senda ,  Keiichi Chono ,  Hirofumi Aoki

IPC: H04N11/02 ,  H04N19/139 ,  H04N19/61 ,  H04N19/109 ,  H04N19/119 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/147 ,  H04N19/70 ,  H04N19/91 ,  H04N19/65

CPC classification number: H04N19/139 ,  H04N19/109 ,  H04N19/119 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/61 ,  H04N19/70 ,  H04N19/65 ,  H04N19/91

Abstract: A video encoding device includes encoding control means 11 for controlling an inter-PU partition type of a CU to be encoded, based on the maximum number (PA) of motion vectors allowed for an image block having a predetermined area and the number (PB) of motion vectors of an encoded image block contained in the image block having the predetermined area. A video decoding device includes decoding control means for controlling an inter-PU partition type of a CU to be decoded, based on the maximum number (PA) of motion vectors allowed for an image block having a predetermined area and the number (PB) of motion vectors of a decoded image block contained in the image block having the predetermined area.

公开(公告)号：US11483571B2

公开(公告)日：2022-10-25

申请号：US16984913

申请日：2020-08-04

Applicant: NEC CORPORATION

Inventor： Hirofumi Aoki ,  Keiichi Chono ,  Yuzo Senda ,  Kenta Senzaki

IPC: H04N7/12 ,  H04N19/159 ,  H04N19/196 ,  H04N19/593 ,  H04N19/124 ,  H04N19/157

Abstract: In a video decoding device, a quantization step size decoding unit calculates a quantization step size that controls a granularity of the inverse quantization by, based on an image prediction, selectively using a mean value of at least a quantization step size assigned to a leftwardly adjacent neighboring image block already decoded and a quantization step size assigned to a upwardly adjacent neighboring image block already decoded or a quantization step size assigned to an image block decoded immediately before.

公开(公告)号：US11436705B2

公开(公告)日：2022-09-06

申请号：US16652727

申请日：2018-09-27

Applicant: NEC Corporation

Inventor： Kenta Senzaki

IPC: G06T5/00 ,  G01S13/89

Abstract: A radar image processing device includes: an estimation unit 1 for setting, as a target pixel, each pixel of a two-dimensional map image, and estimating to which type each target pixel belongs among a pixel caused by the main lobe, a pixel due to the sidelobe, and any other pixel; a pixel value replacement unit 2 for replacing the pixel value of the pixel caused by the main lobe and the pixel value of the pixel due to the sidelobe with pixel values generated in pixel value interpolation processing based on the type of each pixel estimated by the estimation unit 1 to generate a first corrected image; a speckle noise suppression unit 3 for applying speckle noise suppression processing to the first corrected image to generate a second corrected image; and an output image generation unit 4 for generating an output image, in which speckle noise and sidelobes are suppressed, by using the two-dimensional map image, the second corrected image, and the type of each pixel.

公开(公告)号：US20220232223A1

公开(公告)日：2022-07-21

申请号：US17686727

申请日：2022-03-04

Applicant: NEC Corporation

Inventor： Keiichi Chono ,  Yuzo Senda ,  Junji Tajime ,  Hirofumi Aoki ,  Kenta Senzaki

IPC: H04N19/156 ,  H04N19/503 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61 ,  H04N19/593 ,  H04N19/12 ,  H04N19/172 ,  H04N19/184

Abstract: A video decoding device and method, including extracting PCM block size information including a threshold, from a bitstream, determining the threshold based on the extracted PCM block size information; parsing a PCM header from the bitstream with respect to an encoded block, only when said encoded block is prediction mode of intra prediction and a block size of said encoded block is equal to or greater than the determined threshold, controlling an entropy decoding process and a PCM decoding process based on the parsed PCM header; parsing transformed data of a prediction error data of an image in the bitstream; and PCM-decoding PCM data of the image in the bitstream, wherein the decoding performs the decoding operation based on the prediction mode being intra prediction and based on the block size of the encoded block being equal to or greater than the determined threshold.