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1. 发明授权

US10523365B2 Discrimination method and communication system 有权
公开(公告)号：US10523365B2
公开(公告)日：2019-12-31
申请号：US16041038
申请日：2018-07-20
申请人： FUJITSU LIMITED
发明人： Keizo Kato , Kensuke Kuraki , Ryuta Tanaka
IPC分类号： H04L1/00 , H04B10/116
摘要： The procedure includes generating an image to represent a photographing range including at least a part of a range irradiated by light emitted from a light source, information to be transmitted being superimposed on the light, specifying a region where the information is decoded, on the image, and discriminating which of the light source and an object reflecting the light is photographed in the region, based on a similarity between a color of the region and a color of the light emitted from the light source.

2. 发明授权

US10460414B2 Digital watermark information detecting device and digital watermark information detecting method 有权
公开(公告)号：US10460414B2
公开(公告)日：2019-10-29
申请号：US15398065
申请日：2017-01-04
申请人： FUJITSU LIMITED
发明人： Keizo Kato , Kensuke Kuraki , Ryuta Tanaka
IPC分类号： G06T1/00 , H04N1/387 , H04N5/74 , H04N19/467
摘要： A detecting device divides image data into a plurality of areas, wherein the image data is projected by a projecting device and the image data has a plurality of sets of watermark information, in each of which frequency and amplitude are constant and in each of which phase is reversed depending on whether first-type information or second-type information is indicated, and the plurality of sets of watermark information are embedded in the image data in a synchronized manner. The detecting device extracts amplitude of the watermark information included in the areas and identifies, as a target area for extraction, successive areas in which the extracted amplitude of the watermark information is constant. The detecting device extracts the watermark information which is overlapping in the target area for extraction.

3. 发明授权

US08712094B2 Digital watermark embedding apparatus, digital watermark embedding method, and digital watermark detection apparatus 有权
标题翻译：数字水印嵌入装置，数字水印嵌入方法和数字水印检测装置
公开(公告)号：US08712094B2
公开(公告)日：2014-04-29
申请号：US13775850
申请日：2013-02-25
申请人： Fujitsu Limited
发明人： Taizo Anan , Kensuke Kuraki , Shohei Nakagata , Jun Takahashi
IPC分类号： G06K9/00
CPC分类号： G06T1/0021 , G06T1/0085 , G06T2201/0051 , H04N19/467
摘要： A digital watermark embedding apparatus includes an interface unit which acquires video data and digital watermark information, and a processing unit which embeds the digital watermark information into the video data. The processing unit is adapted to: determine the position of a watermark pattern so that the watermark pattern moves with time according to the value of a symbol contained in the digital watermark information within a first moving range that contains at least a portion of a reference region on each image, and so that the average pixel value of the reference region overlapped with the watermark pattern varies in a periodic fashion as the watermark pattern moves; and correct the value of each pixel contained in a region where the reference region and the watermark pattern overlap each other by using the value of a corresponding one of the pixels contained in the watermark pattern.
摘要翻译：数字水印嵌入装置包括：获取视频数据和数字水印信息的接口单元;以及将数字水印信息嵌入到视频数据中的处理单元。所述处理单元适于：确定水印图案的位置，使得所述水印图案随着包含在包含参考区域的至少一部分的第一移动范围内的数字水印信息中包含的符号的值随时间移动使得与水印图案重叠的参考区域的平均像素值随水印图案移动而以周期性方式变化; 并且通过使用包含在水印图案中的对应的一个像素的值来校正包含在参考区域和水印图案彼此重叠的区域中的每个像素的值。

4. 发明申请

US20130251143A1 IMAGE ENCRYPTION SYSTEM AND IMAGE DECRYPTION SYSTEM 有权
标题翻译：图像加密系统和图像分解系统
公开(公告)号：US20130251143A1
公开(公告)日：2013-09-26
申请号：US13850001
申请日：2013-03-25
申请人： FUJITSU LIMITED
发明人： Shohei NAKAGATA , Jun Takahashi , Taizo Anan , Kensuke Kuraki
IPC分类号： H04L9/28
CPC分类号： H04L9/28 , G06F21/6209 , G06F21/6272 , G06F2221/2117 , H04L9/0861 , H04L9/088 , H04N1/4486
摘要： An image encryption system includes an encrypter configured to generate an encrypted image including an encrypted area by encrypting a partial area of an input image; an identification information generator configured to generate identification information for identifying the encrypted area based on an image of the encrypted area; and a registration unit configured to register the identification information and a decryption key for decrypting the encrypted area by making an association between the identification information and the decryption key.
摘要翻译：图像加密系统包括：加密器，被配置为通过加密输入图像的部分区域来生成包括加密区域的加密图像; 识别信息生成器，被配置为基于加密区域的图像生成用于识别加密区域的标识信息; 以及注册单元，被配置为通过在所述识别信息和所述解密密钥之间进行关联来登记所述识别信息和用于解密所述加密区域的解密密钥。

5. 发明授权

US11138759B2 Image processing apparatus and image processing method 有权
公开(公告)号：US11138759B2
公开(公告)日：2021-10-05
申请号：US16708951
申请日：2019-12-10
申请人： FUJITSU LIMITED
发明人： Ayu Karasudani , Atsunori Moteki , Kensuke Kuraki , Toshiyuki Yoshitake , Mitsuhiro Makita
IPC分类号： G06T7/73 , G06T7/543 , G06T11/20 , G06T1/20
摘要： A processor detects feature lines from an image of an object and generates projection lines by projecting line segments in shape information of the object on the image. The processor generates combinations each including a feature line and a projection line and generates plural sets each including a specific number of combinations. The processor uses each set to estimate a position and an orientation of an imaging device that has captured the image, and evaluates a result of the estimation for each set. When there is a change in a relative position or orientation between the object on the image and a shape represented by the shape information, the processor repeats generation of the plural sets, estimation of the position and the orientation of the imaging device and evaluation of the estimation result. The processor determines the position and the orientation of the imaging device based on the repeated evaluation.

6. 发明授权

US10951312B2 Transmitting device, transmission control device, and transmission method 有权
公开(公告)号：US10951312B2
公开(公告)日：2021-03-16
申请号：US16534844
申请日：2019-08-07
申请人： FUJITSU LIMITED
发明人： Kensuke Kuraki , Ryuta Tanaka
IPC分类号： H04B10/116 , H04B10/524 , H04B10/50
摘要： A transmitting device is disclosed. A lighting device changes a first characteristic and a second characteristic of light to be emitted along time series. A processor controls, in a period having a first time length, the lighting device to modulate the first characteristic of the light from the lighting device in the time series in accordance with a light emission pattern having a waveform according to information to be transmitted and having the first time length. The processor controls the lighting device to perform pulse modulation with a pulse pattern having a second time length shorter than the first time length for the second characteristic in accordance with the information. The processor sets peak and bottom values of the second characteristic of each pulse included in a subsection, for an average of the second characteristic to be a value maintaining the waveform of the light emission pattern.

7. 发明授权

US09749046B2 Signal transmission device, signal transmission method, signal reception device, and communication system 有权
公开(公告)号：US09749046B2
公开(公告)日：2017-08-29
申请号：US14807115
申请日：2015-07-23
申请人： FUJITSU LIMITED
发明人： Kensuke Kuraki , Ryuta Tanaka , Akira Nakagawa
IPC分类号： H04B17/00 , H04B10/116
CPC分类号： H04B10/116
摘要： A signal transmission device, includes a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute: irradiating incoming light, which includes one or more symbols with which the incoming light has been varied in response to a signal to be transmitted, on an arbitrary object with a first intensity; and controlling an amplitude of the first intensity on a basis of a reflectance of the incoming light irradiated on the object.

8. 发明授权

US09129184B2 Image synthesis processor and image synthesis method 有权
标题翻译：图像合成处理器和图像合成方法
公开(公告)号：US09129184B2
公开(公告)日：2015-09-08
申请号：US14032532
申请日：2013-09-20
申请人： FUJITSU LIMITED
发明人： Jun Takahashi , Hiroshi Iwanaga , Kensuke Kuraki , Shohei Nakagata , Taizo Anan
IPC分类号： G06K9/36 , H04N21/44 , H04N21/4405 , H04N21/835 , H04N1/32 , G06T1/00
CPC分类号： G06K9/36 , G06T1/0028 , G06T2201/0201 , G06T2201/0202 , H04N1/32224 , H04N1/32352 , H04N21/44008 , H04N21/4405 , H04N21/44055 , H04N21/835
摘要： An image processor includes an image degradation measuring unit configured to compute a degradation level of block data with respect to each of blocks within an image, a degradation determining unit configured to select, with respect to each of the blocks within the image, the block data of a target block of one of a plurality of the images based on degradation levels of respective block data of the target blocks of the plurality of the images, and an image synthesis unit configured to generate a sheet of an image by synthesizing the block data selected with respect to the blocks within the image.
摘要翻译：图像处理器包括：图像劣化测量单元，被配置为针对图像中的每个块计算块数据的劣化水平;劣化确定单元，被配置为针对图像中的每个块选择块数据基于多个图像中的目标块的各个块数据的劣化程度，对多个图像中的一个图像的目标块进行合成;图像合成单元，被配置为通过合成所选择的块数据来生成图像片段相对于图像中的块。

9. 发明授权

US09373151B2 Image processing device and image processing method 有权
标题翻译：图像处理装置及图像处理方法
公开(公告)号：US09373151B2
公开(公告)日：2016-06-21
申请号：US14211883
申请日：2014-03-14
申请人： FUJITSU LIMITED
发明人： Kensuke Kuraki , Ryuta Tanaka
IPC分类号： G06T5/50 , G06T1/00
CPC分类号： G06T1/0028 , G06T2201/0051 , H04N2201/3273
摘要： An image processing device includes a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, taking an image containing an imaging lens; and embedding information in a display image based on image information of an object contained in the image.
摘要翻译：图像处理装置包括处理器; 以及存储器，其存储多个指令，当由所述处理器执行时，使所述处理器执行所述多个指令，从而获取包含成像透镜的图像; 以及基于包含在图像中的对象的图像信息将信息嵌入在显示图像中。

10. 发明授权

US09037871B2 Image processing apparatus and image processing method 有权
标题翻译：图像处理装置和图像处理方法
公开(公告)号：US09037871B2
公开(公告)日：2015-05-19
申请号：US14030629
申请日：2013-09-18
申请人： FUJITSU LIMITED
发明人： Jun Takahashi , Shohei Nakagata , Kensuke Kuraki , Taizo Anan
IPC分类号： G06F21/00 , H04L9/28 , H04N1/32 , H04N1/44
CPC分类号： H04L9/28 , G09C5/00 , H04N1/32224 , H04N1/32229 , H04N1/32309 , H04N1/448
摘要： An image processing apparatus includes: a dividing unit dividing at least one region on a digitalized image into multiple blocks; a scrambling unit producing an encrypted image by rearranging each block; a pixel value judging unit judging, for each block on the encrypted image, whether a difference between a statistically representative value of a pixel value of a first region included in the block and a statistically representative value of a pixel value of a second region is no smaller than a predetermined value, the second region being included in a block adjacent to the block and being adjacent to the first region; and a pixel value converting unit converting the pixel value of the first region in each block having the difference smaller than the predetermined value, while not converting the pixel value of the first region in each block having the difference no smaller than the predetermined value.
摘要翻译：一种图像处理装置包括：分割单元，将数字化图像上的至少一个区域划分成多个块; 加扰单元，通过重新排列每个块来产生加密图像; 像素值判定单元，对加密图像上的每个块判断包含在块中的第一区域的像素值的统计学上代表值与第二区域的像素值的统计学上代表值之间的差为否小于预定值，所述第二区域被包括在与所述块相邻并且与所述第一区域相邻的块中; 以及像素值转换单元，其将不同于预定值的差异的每个块中的第一区域的像素值转换为不具有不同于预定值的差异的块中的第一区域的像素值。

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