公开(公告)号：US08913842B2

公开(公告)日：2014-12-16

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 ,  G06T5/00 ,  G06T5/20

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。

公开(公告)号：US20130336596A1

公开(公告)日：2013-12-19

申请号：US14002144

申请日：2012-01-31

申请人： Yoshitaka Toyoda ,  Daisuke Suzuki ,  Koichi Yamashita ,  Takashi Ito ,  Narihiro Matoba

发明人： Yoshitaka Toyoda ,  Daisuke Suzuki ,  Koichi Yamashita ,  Takashi Ito ,  Narihiro Matoba

IPC分类号： G06T5/20

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。

公开(公告)号：US20060120598A1

公开(公告)日：2006-06-08

申请号：US10538942

申请日：2003-11-14

申请人： Mariko Takahashi ,  Narihiro Matoba

发明人： Mariko Takahashi ,  Narihiro Matoba

IPC分类号： G06K9/00

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。

公开(公告)号：US06744925B2

公开(公告)日：2004-06-01

申请号：US09995661

申请日：2001-11-29

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 ,  H04N19/13 ,  H04N19/157 ,  H04N19/593

摘要： Encoding efficiency is enhanced by actively combining a plurality of encoding methods. A picture element memory receives and stores picture elements within a predetermined range. A mode determinator selects an encoding mode based upon a reference picture element. A first encoding section and a second encoding section predicts the value of the encoded picture element, determines whether the prediction is correct, and then encodes the value of the encoding picture element based on the determination result and outputs a codeword for the encoding picture element. An encoding controller selectively operates the first encoding section and the second encoding section based upon one of the specific encoding modes and the other encoding mode other than the specific encoding mode selected by the mode determinator.

公开(公告)号：US06269183B1

公开(公告)日：2001-07-31

申请号：US09171100

申请日：1998-10-13

申请人： Narihiro Matoba ,  Masayuki Saito

发明人： Narihiro Matoba ,  Masayuki Saito

IPC分类号： G06K900

CPC分类号： H04N1/64 ,  H04N1/648 ,  H04N5/77 ,  H04N5/781 ,  H04N5/85 ,  H04N5/907 ,  H04N9/8047 ,  H04N11/044 ,  H04N19/98

摘要： Output signals of a predetermined number of pixels composed of a plurality of color components intermixed are rearranged into a set of unit blocks, each composed of output signal components of the same color, then the thus rearranged image signals are encoded into fixed-length codes for each unit block, then the image signals thus encoded into fixed-length codes are stored in a coded image memory, then the image signals stored therein are read out and decoded into fixed-length form for each unit block, and the decoded image signals are reversely rearranged to restore the original signals, which are stored in a frame memory.

摘要翻译： 将由多个颜色分量混合组成的预定数量的像素的输出信号重新排列成一组单位块，每个单元块由相同颜色的输出信号分量组成，则这样重新排列的图像信号被编码为固定长度代码 每个单位块，则将这样编码为固定长度码的图像信号存储在编码图像存储器中，然后将存储在其中的图像信号读出并解码为每个单位块的固定长度形式，并且解码图像信号为 反向重新排列以恢复存储在帧存储器中的原始信号。

公开(公告)号：US5706103A

公开(公告)日：1998-01-06

申请号：US413808

申请日：1995-03-28

申请人： Narihiro Matoba ,  Masaru Onishi

发明人： Narihiro Matoba ,  Masaru Onishi

IPC分类号： H04N1/415 ,  G06T9/00 ,  H03M7/30 ,  H04N1/32 ,  H04N1/41

CPC分类号： H04N1/32443 ,  G06T9/00 ,  H04N1/32358 ,  H04N1/32491 ,  H04N2201/329

摘要： An image processing device comprises an encoder for encoding inputted image data in the form of fixed length compression. The encoded data encoded in the form of the fixed length compression by the encoder is stored in a hard disk through an encoded data buffer which is a toggle buffer. Accordingly, the image data can be stored in the hard disk at a constant speed, and a capacity of the encoded data buffer can be minimized since the data amount after data compression is decided. As a result, it is not necessary to provide a semiconductor memory corresponding to storage of one screen, so that a low cost image processing device is obtained.

摘要翻译： 图像处理装置包括用于以固定长度压缩的形式对输入的图像数据进行编码的编码器。 由编码器以固定长度压缩的形式编码的编码数据通过作为切换缓冲器的编码数据缓冲器存储在硬盘中。 因此，可以以恒定的速度将图像数据存储在硬盘中，并且由于决定了数据压缩后的数据量，所以能够使编码数据缓冲器的容量最小化。 结果，不需要提供与一个屏幕的存储相对应的半导体存储器，从而获得低成本的图像处理装置。

公开(公告)号：US20150016722A1

公开(公告)日：2015-01-15

申请号：US14380629

申请日：2013-02-21

申请人： Tsubasa Onda ,  Yoshitaka Toyoda ,  Daisuke Suzuki ,  Koichi Yamashita ,  Narihiro Matoba

发明人： Tsubasa Onda ,  Yoshitaka Toyoda ,  Daisuke Suzuki ,  Koichi Yamashita ,  Narihiro Matoba

IPC分类号： G06T5/00 ,  H04N9/73 ,  H04N9/77

CPC分类号： G06T5/009 ,  G06T5/008 ,  G06T2207/10024 ,  G06T2207/20012 ,  H04N1/6027 ,  H04N5/235 ,  H04N5/2355 ,  H04N9/3179 ,  H04N9/73 ,  H04N9/77

摘要： A region determination circuit (60) determines whether or not each of the pixels in an image is within a region subject to correction, in which pixels having at most a predetermined brightness level appear with a frequency equal to or less than a predetermined value. An offset level generation circuit (10) generates an offset level (Offset) on the basis of the brightness of the pixels determined to be within the region subject to correction. An offset subtraction circuit (1) subtracts the offset level (Offset) from the image signal (Yi) to generate an offset image signal (Yofst). A gain generation circuit (20) generates a gain for the offset image signal (Yofst). A gain multiplication circuit (2) multiplies the offset image signal (Yofst) by the gain to generate a corrected image signal (Ya).

摘要翻译： 区域确定电路（60）确定图像中的每个像素是否在经过校正的区域内，其中出现具有等于或小于预定值的频率的具有至多预定亮度级的像素。 偏移电平生成电路（10）根据确定为在校正区域内的像素的亮度产生偏移电平（Offset）。 偏移减法电路（1）从图像信号（Yi）中减去偏移电平（Offset），产生偏移图像信号（Yofst）。 增益生成电路（20）产生偏移图像信号（Yofst）的增益。 增益乘法电路（2）将偏移图像信号（Yofst）乘以增益以产生校正图像信号（Ya）。

公开(公告)号：US07831092B2

公开(公告)日：2010-11-09

申请号：US11628842

申请日：2004-11-25

申请人： Takaaki Sakaguchi ,  Tooru Aoki ,  Narihiro Matoba

发明人： Takaaki Sakaguchi ,  Tooru Aoki ,  Narihiro Matoba

IPC分类号： G06K9/00

CPC分类号： H04N9/68 ,  H04N9/646

摘要： In a color correction method of performing correction by dividing the color plane into a plurality of areas, and correcting the color according to different methods for each divided area, color shifts generated in converting color signal vectors are prevented from arising.When determining which area of the color signal plane divided by area boundary lines passing through the origin of the color signal plane includes the input color signal vector, and correcting the input color signal vector by converting the input color signal vector using a correction matrix having been designated in advance for the area determined to include the input color signal vector, a correction matrix including a component for performing parallel translation and a component for performing linear transformation is used as a correction matrix.

摘要翻译： 在通过将色平面划分为多个区域进行校正并根据针对每个分割区域的不同方法校正颜色的颜色校正方法中，防止在转换颜色信号矢量时产生的颜色偏移。 当确定通过彩色信号平面的原点的面积边界线划分的彩色信号平面的哪个区域包括输入彩色信号矢量，并且通过使用已经被修改的校正矩阵转换输入的彩色信号矢量来校正输入的彩色信号矢量 对于确定为包括输入彩色信号矢量的区域，预先指定包括用于执行并行转换的分量的校正矩阵和用于执行线性变换的分量作为校正矩阵。

公开(公告)号：US20080273812A1

公开(公告)日：2008-11-06

申请号：US10577482

申请日：2003-10-31

申请人： Takeo Fujita ,  Narihiro Matoba

发明人： Takeo Fujita ,  Narihiro Matoba

IPC分类号： H04N5/217 ,  G06K9/36

CPC分类号： H04N5/3572

摘要： An image correcting method capable of performing highly accurate shading correction using a table having a small storage area without causing any deterioration of performance even when the shading characteristics vary dynamically. The image correcting method comprises a step for calculating the distance between the coordinates of a pixel constituting an image and a predetermined reference coordinates, a step for calculating a distance correction value by inputting the distance calculated at the distance calculating step to the variable of an N-order function (N is an integer of 1 or above), a step for calculating a correction coefficient corresponding to the distance correction value calculated at the distance correction value calculating step based on a table representing the correspondence between the distance correction value and the correction coefficient, and a step for correcting the signal of the pixel based on the correction coefficient calculated at the correction coefficient calculating step.

摘要翻译： 一种能够使用具有小存储区域的表执行高精度着色校正的图像校正方法，即使当阴影特性动态变化时也不会导致性能的任何劣化。 图像校正方法包括：计算构成图像的像素的坐标与预定基准坐标之间的距离的步骤;通过将在距离计算步骤计算的距离输入到N的变量来计算距离校正值的步骤 - 顺序函数（N是1以上的整数），根据表示距离校正值与校正值的对应关系的表，计算与在距离校正值计算步骤中算出的距离校正值对应的校正系数的步骤 系数，以及基于在校正系数计算步骤计算出的校正系数来校正像素的信号的步骤。

公开(公告)号：US20080225147A1

公开(公告)日：2008-09-18

申请号：US10567251

申请日：2003-10-31

申请人： Masumi Dakemoto ,  Narihiro Matoba ,  Takeo Fujita

发明人： Masumi Dakemoto ,  Narihiro Matoba ,  Takeo Fujita

IPC分类号： H04N5/335

CPC分类号： H04N5/243 ,  H04N5/2357 ,  H04N9/045

摘要： For an image signal of a solid-state image pickup element, average value calculation means calculates an average value of pixel values for the respective color components constituting an image of each frame. Gain calculation means calculates a maximum value from the average values of the pixel values of the respective color components of the image calculated by the average value calculation means for the number of frames for one cycle of flicker generation, calculates, according to these maximum values, a gain for adjusting the average value of the pixel value of the respective components constituting the other image to a maximum width, and outputs it as a gain of each color component to be given to signal amplification means. The signal amplification means amplifies all the pixels of the color components of the image according to the gain of the respective color components given.

摘要翻译： 对于固态图像拾取元件的图像信号，平均值计算装置计算构成每帧的图像的各个颜色分量的像素值的平均值。 增益计算装置根据平均值计算装置针对一个闪烁生成周期的帧数计算的图像的各个颜色分量的像素值的平均值计算最大值，根据这些最大值， 用于将构成其他图像的各个分量的像素值的平均值调整到最大宽度的增益，并将其作为要被提供给信号放大装置的每个颜色分量的增益输出。 信号放大装置根据给出的各个颜色分量的增益来放大图像的颜色分量的所有像素。