公开(公告)号：US20170287116A1

公开(公告)日：2017-10-05

申请号：US15507803

申请日：2015-09-17

Applicant: NEC Corporation

Inventor： Kenta Senzaki ,  Masato Toda

IPC: G06T5/00 ,  G06T7/13 ,  G06T5/20 ,  G06K9/46

CPC classification number: G06T5/002 ,  G06K9/4604 ,  G06T5/009 ,  G06T5/20 ,  G06T7/13 ,  G06T2207/20016 ,  G06T2207/20208 ,  H04N1/407 ,  H04N1/4072 ,  H04N1/409 ,  H04N1/4092 ,  H04N5/2355

Abstract: The present invention provides an image processing method, an image processing device, and an image processing program which require low computing costs and with which it is possible to minimize noise amplification and halo generation caused by HDR. An image processing device according to one embodiment of the present invention has: a multi-resolution image generation means for generating a multi-resolution image; a correction amount calculation means for calculating a brightness correction amount on the basis of a lowest-resolution image of the multi-resolution image, a differential image between adjacent resolutions of the multi-resolution image, and edge information calculated at each resolution of the multi-resolution image; and a noise suppression means for calculating, on the basis of the lowest-resolution image, the differential image between adjacent resolutions, the edge information, and the brightness correction amount, an image after brightness correction in which a noise component is suppressed.

公开(公告)号：US09501711B2

公开(公告)日：2016-11-22

申请号：US14397037

申请日：2013-04-24

Applicant: NEC Corporation

Inventor： Kenta Senzaki ,  Masato Tsukada ,  Hiroaki Kawaguchi

IPC: G06K9/40 ,  G09G1/14 ,  G09G3/28 ,  G09G3/30 ,  G09G5/00 ,  G09G5/02 ,  G09G5/10 ,  G06K9/46 ,  G06T5/00 ,  G06T5/20 ,  G06K9/52

CPC classification number: G06K9/4604 ,  G06K9/52 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/20016 ,  G06T2207/20182 ,  G06T2207/20192

Abstract: The present invention is a method including: correcting difference between a pixel statistical value of a specific layer and a pixel statistical value of a layer that is wider than the specific layer using an edge information of a layer that is wider than the specific layer; correcting the pixel statistical value of the specific layer using post-correction difference and the pixel statistical value of layer that is wider than the specific layer; recorrecting the post-correction pixel statistical value of the specific layer using difference between a pre-correction pixel statistical value of the specific layer and the post-correction pixel statistical value of the specific layer and the edge information of a layer that is wider than the specific layer; and correcting the target pixel by repeating correction and recorrection until the layer reduces its range from the maximum range to the minimum range.

Abstract translation: 本发明是一种方法，包括：使用比特定层宽的层的边缘信息来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; 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; 使用特定层的校正前像素统计值和特定层的校正后像素统计值之间的差以及比该特定层的修正后像素统计值更宽的层的边缘信息之间的差异来重新校正特定层的校正后像素统计值 特定层; 以及通过重复校正和重新校正来校正目标像素，直到该层将其范围从最大范围减小到最小范围。

公开(公告)号：US20150363666A1

公开(公告)日：2015-12-17

申请号：US14762889

申请日：2014-02-26

Applicant: NEC CORPORATION

Inventor： Kenta Senzaki ,  Masato Tsukada ,  Hiroaki Kawaguchi

IPC: G06K9/52 ,  G06K9/46 ,  G06T5/00

CPC classification number: G06K9/52 ,  G06K9/46 ,  G06K9/4604 ,  G06K9/4661 ,  G06K2009/4666 ,  G06T5/00 ,  G06T5/002 ,  G06T2207/20016 ,  G06T2207/20192 ,  H04N1/409 ,  H04N5/14

Abstract: The present invention is directed to an image processing method, comprising: deriving a pixel statistical value of pixels and edge information for each of regions in a plurality of layers, the regions including attention pixels and having ranges that are successively narrower; correcting differential information between a pixel statistical value for a region in an attention layer and a pixel statistical value for a region in a layer wider than the region in the attention layer by using the edge information; correcting the pixel statistical value for the region in the attention layer by using the corrected differential information and the pixel statistical value for the region wider than the region in the attention layer; re-correcting the corrected pixel statistical value for the region in the attention layer by using a pixel statistical value for a region equal to or wider than a region in each of the layers and differential information between the uncorrected pixel statistical value for the region in the attention layer and the corrected pixel statistical value for the region in the attention layer; and correcting the attention pixel by repeating the correcting and the re-correcting the pixel statistical value for the region in the attention layer sequentially in the respective layers until the region is reduced from a maximum range to a minimum range.

Abstract translation: 本发明涉及一种图像处理方法，包括：针对多个层中的每个区域，导出像素的像素统计值和边缘信息，所述区域包括关注像素并且具有相继变窄的范围; 通过使用所述边缘信息来校正所述关注层中的区域的像素统计值与所述关注层中的所述区域之外的区域的像素统计值的差分信息; 通过使用校正后的差分信息和比关注层中的区域宽的区域的像素统计值来校正注意层中的区域的像素统计值; 通过使用等于或大于每个层中的区域的区域的像素统计值和在该层中的区域的未校正像素统计值之间的差分信息来重新校正注意层中的区域的校正像素统计值 注意层和注意层区域的校正像素统计值; 以及通过重复在各层中顺序地对关注层中的区域进行像素统计值的校正和重新校正，直到该区域从最大范围减小到最小范围来校正关注像素。

公开(公告)号：US20150086130A1

公开(公告)日：2015-03-26

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：US20150086126A1

公开(公告)日：2015-03-26

申请号：US14397202

申请日：2013-04-25

Applicant: NEC Corporation

Inventor： Kenta Senzaki ,  Masato Tsukada ,  Keiichi Chono

IPC: G06T5/00 ,  G06T7/00

CPC classification number: G06T5/002 ,  G06T2207/20016 ,  G06T2207/20024 ,  G06T2207/20182 ,  G06T2207/20192

Abstract: Disclosed is an image processing method including: generating an initial denoised image with a reduced noise while preserving an edge in an input image; controlling an iterative operation performed based on energy defined in advance based on an initial residual component calculated from the input image and the initial denoised image; and separating the initial denoised image to a skeleton component and a residual component by the controlled iterative operation to generate the skeleton component as an output image.

Abstract translation: 公开了一种图像处理方法，包括：在保持输入图像中的边缘的同时，生成具有降低的噪声的初始去噪图像; 基于从所述输入图像和所述初始去噪图像计算的初始残差分量来控制基于预先定义的能量执行的迭代操作; 以及通过所述受控迭代操作将所述初始去噪图像分离为骨架部件和残余部件，以生成所述骨架部件作为输出图像。