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公开(公告)号：US20060132618A1
公开(公告)日：2006-06-22
申请号：US10535499
申请日：2003-09-30
申请人： Takeo Fujita , Narihiro Matoba
发明人： Takeo Fujita , Narihiro Matoba
IPC分类号： H04N5/228
CPC分类号： H04N5/232 , H04N1/00 , H04N1/2112 , H04N1/212 , H04N1/2137 , H04N1/2158 , H04N5/772 , H04N5/907 , H04N9/804 , H04N19/124 , H04N19/149
摘要： An image pickup apparatus includes a characteristic value calculation circuit 16 for extracting a characteristic value used for predicting an amount of codes to be generated at a time of compressing a video signal acquired by a solid state image pickup device from the video signal, and a compression coefficient control circuit 17 for controlling a compression coefficient which is used by an image compression unit 18 based on the characteristic value acquired by the characteristic value calculation circuit 16. The compression coefficient control circuit uses the characteristic value acquired by the characteristic value calculation circuit 16 at a time of allowing users to check an image to be picked-up before picking up an image, and determines the compression coefficient at a time of picking up an image.
摘要翻译： 图像拾取装置包括特征值计算电路16，用于提取用于预测在从视频信号压缩由固态图像拾取装置获取的视频信号时要生成的代码量的特征值，以及压缩 系数控制电路17，用于基于由特征值计算电路16获取的特性值来控制由图像压缩单元18使用的压缩系数。 压缩系数控制电路使用由特征值计算电路16获取的特征值，在允许用户在拍摄图像之前检查要拍摄的图像，并且确定拾取图像时的压缩系数 图片。
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22.发明授权公开(公告)号：US06188793B1
公开(公告)日：2001-02-13
申请号：US08952723
申请日：1997-11-19
申请人： Tomohiro Kimura , Ikuro Ueno , Taichi Yanagiya , Masayuki Yoshida , Fumitaka Ono , Narihiro Matoba , Kunio Ueda
发明人： Tomohiro Kimura , Ikuro Ueno , Taichi Yanagiya , Masayuki Yoshida , Fumitaka Ono , Narihiro Matoba , Kunio Ueda
IPC分类号： G06K900
CPC分类号： H04N1/41 , H04N19/12 , H04N19/14 , H04N19/182 , H04N19/593 , H04N19/93
摘要： By combining a plurality of encoding methods actively, an encoding efficiency is enhanced. The first encoder encodes a result of determination whether a prediction error is zero or not. The second encoder encodes the prediction error unless the prediction error is zero. The third encoder encodes the prediction error regardless of whether the prediction error is zero or not. The mode determinator determines the encoding mode, and the encoding controller selectively operates the first encoder, the second encoder, and the third encoder according to the encoding mode determined.
摘要翻译： 通过积极地组合多种编码方式，提高了编码效率。 第一编码器对预测误差是否为零的确定结果进行编码。 第二编码器编码预测误差，除非预测误差为零。 无论预测误差是否为零，第三编码器对预测误差进行编码。 模式确定器确定编码模式，并且编码控制器根据确定的编码模式选择性地操作第一编码器，第二编码器和第三编码器。
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23.发明授权Image coding apparatus for converting image information to variable length codes of predetermined code size, method of image coding and apparatus for storing/transmitting image 失效用于将图像信息转换为预定代码大小的可变长度代码，图像编码方法以及用于存储/发送图像的装置的图像编码装置
公开(公告)号：US06052488A
公开(公告)日：2000-04-18
申请号：US998075
申请日：1997-12-24
IPC分类号： H04N5/907 , G06T9/00 , H03M7/40 , H04N1/41 , H04N5/92 , H04N19/00 , H04N19/126 , H04N19/134 , H04N19/149 , H04N19/176 , H04N19/196 , H04N19/423 , H04N19/426 , H04N19/625 , H04N19/85 , H04N19/90 , G06K9/36 , G06K9/46
CPC分类号： H04N1/41 , H04N19/115 , H04N19/14 , H04N19/15 , H04N19/172 , H04N19/176 , H04N19/194 , H04N19/196 , H04N19/60 , H04N19/13 , H04N19/146 , H04N19/152 , H04N19/91
摘要： In an electronic still camera, a compression coefficient estimating unit performs preencoding using only an LA component of FBTC compressed data read from an image memory, and estimates an optimal compression ratio based on the result of preencoding. Thereafter, JPEG encoder performs JPEG compression on the image data applied from FBTC decoder with the estimated compression coefficient, and transfers the result to a recording apparatus. As compared with the prior art in which image data is directly preencoded, the time for preencoding can be significantly reduced and image memory requires smaller capacity.
摘要翻译： 在电子静态照相机中，压缩系数估计单元仅使用从图像存储器读取的FBTC压缩数据的LA分量进行预编码，并且基于预编码的结果来估计最佳压缩比。 此后，JPEG编码器对从FBTC解码器施加的图像数据以估计的压缩系数执行JPEG压缩，并将结果传送到记录装置。 与直接预编码图像数据的现有技术相比，可以显着减少预编码的时间，并且图像存储器需要更小的容量。
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公开(公告)号：US5764373A
公开(公告)日：1998-06-09
申请号：US205295
申请日：1994-03-02
申请人： Narihiro Matoba , Masaru Ohnishi , Masaaki Tanioka , Yukio Kodama , Yoshifumi Imanaka , Hiroaki Furuta , Eisaku Tomita
发明人： Narihiro Matoba , Masaru Ohnishi , Masaaki Tanioka , Yukio Kodama , Yoshifumi Imanaka , Hiroaki Furuta , Eisaku Tomita
CPC分类号： G06T9/005
摘要： A line buffer device temporarily stores a predetermined area of original image data which are divided into small blocks, each having a small area, so as to encode the image data for each block into data having a fixed length by a compression processor. The line buffer device is composed of a first-stage line buffer group and a second-stage line buffer group. The number of line buffers in the first-stage line buffer group is smaller by one than the number of lines constituting one block and the number of line buffers in the second-stage line buffer group is the same as the number of lines constituting one block. Encoding processing time is shortened and the circuit structure is simplified.
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25.发明授权Image processor using image data compression coding of fixed compression rate 失效图像处理器使用固定压缩率的图像数据压缩编码
公开(公告)号：US5727087A
公开(公告)日：1998-03-10
申请号：US407694
申请日：1995-03-21
申请人： Narihiro Matoba , Masaru Onishi
发明人： Narihiro Matoba , Masaru Onishi
CPC分类号： B41J2/2054 , G06T9/00 , H04N1/64
摘要： In an image processor using image data compression coding of a fixed compression rate, the data of one color of image data is stored in a coding memory without coding, if compression coding is not necessary. If the compression coding is necessary, the data is coded by an encoder by compression coding with a compression rate of 4, and the coded data of four colors, i.e. cyan, magenta, yellow and black, are stored in the coding memory. Since the image data is compressed by a fixed compression rate, it is possible to estimate the quantity of data after compression. As a result, the coding memory can be used effectively, without using a fixed disc unit.
摘要翻译： 在使用固定压缩率的图像数据压缩编码的图像处理器中，如果不需要压缩编码，则图像数据的一种颜色的数据被存储在编码存储器中而不进行编码。 如果压缩编码是必要的，则通过压缩编码压缩编码，由编码器对数据进行编码，并将四种颜色的编码数据，即青色，品红色，黄色和黑色存储在编码存储器中。 由于图像数据被固定压缩率压缩，因此可以估计压缩后的数据量。 结果，可以有效地使用编码存储器，而不使用固定盘单元。
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公开(公告)号：US09258461B2
公开(公告)日：2016-02-09
申请号：US14390626
申请日：2013-02-21
申请人： Toru Aoki , Mitsuo Hashimoto , Narihiro Matoba
发明人： Toru Aoki , Mitsuo Hashimoto , Narihiro Matoba
CPC分类号： H04N5/2173 , G06T5/002 , G06T5/20 , G06T2207/10016 , G06T2207/20024 , G06T2207/20182 , H04N5/23229 , H04N5/357
摘要： An NR coefficient (Kf) is calculated on the basis of a representative value (Pm) of a pixel of interest and a low-pass filtered value (La-Ld) nearest to the representative value (Pm) of the pixel of interest among a plurality of low-pass filtered values filtered one-dimensionally in different directions in an input image, and the pixel value of the pixel of interest and a value output by a two-dimensional low-pass filter (25) are weighted by the NR coefficient (Kf) and added (36). The representative value of the pixel of interest may be, for example, a median value obtained by filtering the current frame and a past frame in the time axis direction. The image processing device reduces noise without lowering resolution.
摘要翻译： 基于感兴趣像素的代表值（Pm）和最接近感兴趣像素的代表值（Pm）的低通滤波值（La-Ld）计算NR系数（Kf），其中， 在输入图像中以不同方向一维滤波的多个低通滤波值，并且将感兴趣像素的像素值和由二维低通滤波器（25）输出的值由NR系数 （Kf）并添加（36）。 感兴趣像素的代表值可以是例如通过对时间轴方向上的当前帧和过去帧进行滤波而获得的中值。 图像处理装置降低噪声而不降低分辨率。
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公开(公告)号：US09153015B2
公开(公告)日：2015-10-06
申请号：US14002144
申请日：2012-01-31
CPC分类号： G06T5/20 , G06T5/002 , G06T5/008 , G06T2207/20182 , H04N5/21
摘要： For each pixel in an image (Din), a contrast correlation value (CT) is detected for peripheral areas centered around the pixel to be corrected (1), a contrast enhancement coefficient (Ken) is determined in accordance with the contrast correlation value (CT) (2), and in accordance with the enhancement coefficient (Ken), local contrast is enhanced for each pixel and an intermediate image (D3) is generated (3). When performing noise reduction (5) by smoothing the intermediate image (D3) in the time direction, the degree of noise reduction is controlled in accordance with a noise reduction coefficient (Knr) that is large where the enhancement coefficient (Ken) is large. With respect to a low-contrast image such as one captured under fog, haze or other poor weather conditions, the contrast in areas having reduced contrast is appropriately improved, and the noise that is enhanced in conjunction with contrast improvement is reduced, enabling a high quality image to be obtained.
摘要翻译： 对于图像（Din）中的每个像素，以围绕待校正像素（1）为中心的周边区域检测对比度相关值（CT），根据对比度相关值（ CT）（2），并且根据增强系数（Ken），对于每个像素增强局部对比度，并且生成中间图像（D3）（3）。 当通过在时间方向上平滑中间图像（D3）来执行降噪（5）时，根据增强系数（Ken）大的噪声降低系数（Knr）来控制噪声降低的程度。 对于诸如在雾，雾或其他差的天气条件下捕获的低对比度图像，适当地改善了对比度降低的区域中的对比度，并且降低了与对比度改善相结合的噪声，使得能够高 要获得质量图像。
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公开(公告)号：US20130051664A1
公开(公告)日：2013-02-28
申请号：US13696191
申请日：2010-07-06
申请人： Takeo Fujita , Narihiro Matoba
发明人： Takeo Fujita , Narihiro Matoba
IPC分类号： G06K9/40
CPC分类号： G06T5/002 , G06T5/20 , G06T2207/10004 , G06T2207/20192
摘要： A pattern matching processing unit 10 binarizes input image data 1, compares a binarized pattern with a pattern provided for each of groups, and outputs either first information indicating a group to which a pattern that matches the binarized pattern belongs or second information indicating no match. A 0-degree direction dedicated filter 21, a 45-degree direction dedicated filter 22, a 90-degree direction dedicated filter 23, and a 135-degree direction dedicated filter 24 which are disposed correspondingly to the groups carry out smoothing processes according to the direction of an edge of the image, respectively. When the pattern matching processing unit outputs the first information, a selector 30 selects the output of either one of the filters corresponding to the group as output image data 2, whereas when the pattern matching processing unit outputs the second information, the selector outputs the input image data 1 as the output image data 2.
摘要翻译： 图案匹配处理单元10将输入图像数据2二进制化，将二值化图案与为每个组提供的图案进行比较，并且输出指示与二值化图案匹配的图案所属的组的第一信息或指示不匹配的第二信息。 与各组对应地设置的0度方向专用滤波器21，45度方向专用滤波器22，90度方向专用滤波器23以及135度方向专用滤波器24进行根据 分别是图像边缘的方向。 当图案匹配处理单元输出第一信息时，选择器30选择与该组对应的任何一个滤波器的输出作为输出图像数据2，而当图案匹配处理单元输出第二信息时，选择器输出输入 图像数据1作为输出图像数据2。
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公开(公告)号：US07599551B2
公开(公告)日：2009-10-06
申请号：US10538942
申请日：2003-11-14
申请人： Mariko Takahashi , Narihiro Matoba
发明人： Mariko Takahashi , Narihiro Matoba
CPC分类号： H04N1/6058 , G06T5/009 , G06T2207/10024
摘要： A color correction apparatus is provided including a color correction means 1 for making a color correction to an input image signal 101, and a color gamut compression means 2 for performing color gamut compression on the color-corrected input image signal based on color reproduction characteristics data 103 describing color reproduction characteristics so that the color-corrected image data outputted from the color correction means 1 has a chromaticity range which is contained in a color reproduction region which is based on the color reproduction characteristics.
摘要翻译： 提供一种颜色校正装置，其包括用于对输入图像信号101进行颜色校正的颜色校正装置1和用于基于颜色再现特性数据对色彩校正的输入图像信号执行色域压缩的色域压缩装置2 描述颜色再现特性，使得从色彩校正装置1输出的色彩校正图像数据具有包含在基于颜色再现特性的色彩再现区域中的色度范围。
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公开(公告)号：US07440010B2
公开(公告)日：2008-10-21
申请号：US10535499
申请日：2003-09-30
申请人： Takeo Fujita , Narihiro Matoba
发明人： Takeo Fujita , Narihiro Matoba
IPC分类号： H04N5/228
CPC分类号： H04N5/232 , H04N1/00 , H04N1/2112 , H04N1/212 , H04N1/2137 , H04N1/2158 , H04N5/772 , H04N5/907 , H04N9/804 , H04N19/124 , H04N19/149
摘要： An image pickup apparatus includes a characteristic value calculation circuit 16 for extracting a characteristic value used for predicting an amount of codes to be generated at a time of compressing a video signal acquired by a solid state image pickup device from the video signal, and a compression coefficient control circuit 17 for controlling a compression coefficient which is used by an image compression unit 18 based on the characteristic value acquired by the characteristic value calculation circuit 16. The compression coefficient control circuit uses the characteristic value acquired by the characteristic value calculation circuit 16 at a time of allowing users to check an image to be picked-up before picking up an image, and determines the compression coefficient at a time of picking up an image.
摘要翻译： 图像拾取装置包括特征值计算电路16，用于提取用于预测在从视频信号压缩由固态图像拾取装置获取的视频信号时要生成的代码量的特征值，以及压缩 系数控制电路17，用于基于由特征值计算电路16获取的特性值来控制由图像压缩单元18使用的压缩系数。 压缩系数控制电路使用由特征值计算电路16获取的特征值，在允许用户在拍摄图像之前检查要拍摄的图像，并且确定拾取图像时的压缩系数 图片。
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