公开(公告)号：US07750950B2

公开(公告)日：2010-07-06

申请号：US11606087

申请日：2006-11-30

申请人： Masaya Tamaru ,  Koichi Sakamoto ,  Koji Ichikawa ,  Masahiko Sugimoto ,  Manabu Hyodo ,  Kazuhiko Takemura ,  Hirokazu Kobayashi

发明人： Masaya Tamaru ,  Koichi Sakamoto ,  Koji Ichikawa ,  Masahiko Sugimoto ,  Manabu Hyodo ,  Kazuhiko Takemura ,  Hirokazu Kobayashi

IPC分类号： H04N9/73

CPC分类号： H04N5/2355 ,  H04N5/202 ,  H04N5/235 ,  H04N9/69 ,  H04N9/735

摘要： An image combined high sensitivity image and low sensitivity image is provided with well-adjusted white balance and broad dynamic range. The image is obtained by multiplying the combined data by total gain that depends on scene. A white balance is adjusted with gain value calculated from of high output image data. Lv value representing luminance is calculated and compared with a threshold to decide whether or not the high sensitivity image and the low sensitivity image should be combined. First gamma correction unit performs gamma-correction for the image signal derived from the high sensitivity signal with first gamma character, second gamma correction unit performs gamma-correction for the image signal derived from the low sensitivity signal with second gamma character that is different from the first gamma character, and addition unit combines the image signal from the first gamma correction unit and the image signal from the second gamma correction unit.

摘要翻译： 组合高灵敏度图像和低灵敏度图像的图像具有良好调整的白平衡和宽动态范围。 通过将组合数据乘以取决于场景的总增益来获得图像。 用高输出图像数据计算的增益值调整白平衡。 计算表示亮度的Lv值并将其与阈值进行比较，以决定是否应该组合高灵敏度图像和低灵敏度图像。 第一伽马校正单元对于具有第一伽玛字符的高灵敏度信号导出的图像信号执行伽马校正，第二伽马校正单元对于具有与第一伽玛校正不同的第二伽马字符从低灵敏度信号导出的图像信号进行伽马校正 第一伽马字符和加法单元组合来自第一伽马校正单元的图像信号和来自第二伽马校正单元的图像信号。

公开(公告)号：US20070076103A1

公开(公告)日：2007-04-05

申请号：US11606078

申请日：2006-11-30

申请人： Masaya Tamaru ,  Koichi Sakamoto ,  Koji Ichikawa ,  Masahiko Sugimoto ,  Manabu Hyodo ,  Kazuhiko Takemura ,  Hirokazu Kobayashi

发明人： Masaya Tamaru ,  Koichi Sakamoto ,  Koji Ichikawa ,  Masahiko Sugimoto ,  Manabu Hyodo ,  Kazuhiko Takemura ,  Hirokazu Kobayashi

IPC分类号： H04N5/202

CPC分类号： H04N5/2355 ,  H04N5/202 ,  H04N5/235 ,  H04N9/69 ,  H04N9/735

摘要： An image combined high sensitivity image and low sensitivity image is provided with well-adjusted white balance and broad dynamic range. The image is obtained by multiplying the combined data by total gain that depends on scene. A white balance is adjusted with gain value calculated from of high output image data. Lv value representing luminance is calculated and compared with a threshold to decide whether or not the high sensitivity image and the low sensitivity image should be combined. First gamma correction unit performs gamma-correction for the image signal derived from the high sensitivity signal with first gamma character, second gamma correction unit performs gamma-correction for the image signal derived from the low sensitivity signal with second gamma character that is different from the first gamma character, and addition unit combines the image signal from the first gamma correction unit and the image signal from the second gamma correction unit.

公开(公告)号：US07286167B2

公开(公告)日：2007-10-23

申请号：US10694805

申请日：2003-10-29

申请人： Koichi Sakamoto ,  Kazuhiko Takemura ,  Koji Ichikawa ,  Masahiko Sugimoto ,  Manabu Hyodo ,  Masaya Tamaru

发明人： Koichi Sakamoto ,  Kazuhiko Takemura ,  Koji Ichikawa ,  Masahiko Sugimoto ,  Manabu Hyodo ,  Masaya Tamaru

IPC分类号： H04N5/76

CPC分类号： H04N1/00249 ,  H04N5/2351 ,  H04N5/2355 ,  H04N5/772 ,  H04N9/045 ,  H04N9/804 ,  H04N9/8205

摘要： A digital camera has a feature to photograph a subject and record the image data onto a recording medium in a dynamic range wider than that required for printing, the digital camera further having a feature to store tag information into an image file, together with the image data, and record the image file onto the recording medium, the tag information including: range compression information indicating whether dynamic range compression has been made; maximum range information indicating the maximum subject reflection factor before and after the dynamic range compression; and knee point information indicating the subject reflection factor assumed when the dynamic range compression was made.

摘要翻译： 数码相机具有拍摄对象的特征，并以比打印所需的宽的动态范围将图像数据记录到记录介质上，数字照相机还具有将图像文件中的标签信息与图像一起存储的特征 数据，并将图像文件记录到记录介质上，标签信息包括：表示动态范围压缩是否已经进行的范围压缩信息; 指示动态范围压缩之前和之后的最大对象反射系数的最大范围信息; 以及指示当进行动态范围压缩时假定的被摄体反射因子的拐点信息。

公开(公告)号：US07254276B2

公开(公告)日：2007-08-07

申请号：US10348764

申请日：2003-01-23

申请人： Masahiko Sugimoto ,  Kazuhiko Takemura ,  Kenkichi Hayashi ,  Koichi Sakamoto ,  Masaya Tamaru ,  Hirokazu Kobayashi

发明人： Masahiko Sugimoto ,  Kazuhiko Takemura ,  Kenkichi Hayashi ,  Koichi Sakamoto ,  Masaya Tamaru ,  Hirokazu Kobayashi

IPC分类号： G06K9/36 ,  G06K9/46

CPC分类号： G06T5/10 ,  G06T5/002 ,  G06T9/007 ,  G06T2207/10024 ,  G06T2207/20052

摘要： An image capturing apparatus for capturing an image of a subject; has: an image pick-up unit for acquiring the image; and a noise reduction unit which removes a frequency component of a color difference signal of the image corresponding to a frequency component of a luminance signal based on the frequency component of the luminance signal of the image.

摘要翻译： 一种用于捕获被摄体的图像的图像捕获装置; 具有：用于获取图像的图像拾取单元; 以及噪声降低单元，其基于图像的亮度信号的频率分量来去除与亮度信号的频率分量相对应的图像的色差信号的频率分量。

公开(公告)号：US20070076113A1

公开(公告)日：2007-04-05

申请号：US11606087

申请日：2006-11-30

申请人： Masaya Tamaru ,  Koichi Sakamoto ,  Koji Ichikawa ,  Masahiko Sugimoto ,  Manabu Hyodo ,  Kazuhiko Takemura ,  Hirokazu Kobayashi

发明人： Masaya Tamaru ,  Koichi Sakamoto ,  Koji Ichikawa ,  Masahiko Sugimoto ,  Manabu Hyodo ,  Kazuhiko Takemura ,  Hirokazu Kobayashi

IPC分类号： H04N5/222

CPC分类号： H04N5/2355 ,  H04N5/202 ,  H04N5/235 ,  H04N9/69 ,  H04N9/735

摘要： An image combined high sensitivity image and low sensitivity image is provided with well-adjusted white balance and broad dynamic range. The image is obtained by multiplying the combined data by total gain that depends on scene. A white balance is adjusted with gain value calculated from of high output image data. Lv value representing luminance is calculated and compared with a threshold to decide whether or not the high sensitivity image and the low sensitivity image should be combined. First gamma correction unit performs gamma-correction for the image signal derived from the high sensitivity signal with first gamma character, second gamma correction unit performs gamma-correction for the image signal derived from the low sensitivity signal with second gamma character that is different from the first gamma character, and addition unit combines the image signal from the first gamma correction unit and the image signal from the second gamma correction unit.

摘要翻译： 组合高灵敏度图像和低灵敏度图像的图像具有良好调整的白平衡和宽动态范围。 通过将组合数据乘以取决于场景的总增益来获得图像。 用高输出图像数据计算的增益值调整白平衡。 计算表示亮度的Lv值并将其与阈值进行比较，以决定是否应该组合高灵敏度图像和低灵敏度图像。 第一伽马校正单元对于具有第一伽玛字符的高灵敏度信号导出的图像信号执行伽马校正，第二伽马校正单元对于具有与第二伽玛校正不同的第二伽马字符从低灵敏度信号导出的图像信号进行伽马校正 第一伽马字符和加法单元组合来自第一伽马校正单元的图像信号和来自第二伽马校正单元的图像信号。

公开(公告)号：US06504952B1

公开(公告)日：2003-01-07

申请号：US09271283

申请日：1999-03-17

申请人： Kazuhiko Takemura ,  Fumito Takemoto

发明人： Kazuhiko Takemura ,  Fumito Takemoto

IPC分类号： H04N146

CPC分类号： H04N1/6002 ,  H04N1/6077

摘要： Tristimulus values of each of pixels in an image, which is represented by an image signal, are transformed into chromaticity values, and mean values of the chromaticity values having been calculated with respect to the pixels in the image are calculated. The mean values of the chromaticity values are transformed into physiological primary colors. The thus obtained physiological primary colors are regarded as the white of a photographing illuminant, under which a photographing operation was carried out. The chromaticity values are transformed such that the thus obtained physiological primary colors may coincide with the physiological primary colors of a reference photographing illuminant. The chromaticity values, which have been obtained from the transformation, are then transformed into RGB color signals. The thus obtained RGB color signals are subjected to image processing and then used for reproducing a visible image.

摘要翻译： 将由图像信号表示的图像中的每个像素的三刺激值变换为色度值，并且计算已经针对图像中的像素计算出的色度值的平均值。 色度值的平均值被转化为生理原色。 由此获得的生理原色被认为是进行拍摄操作的摄影光源的白色。 色度值被变换，使得由此获得的生理原色可以与参考摄影光源的生理原色一致。 然后将从变换得到的色度值转换为RGB色信号。 对这样获得的RGB彩色信号进行图像处理，然后用于再现可视图像。

公开(公告)号：US07630573B2

公开(公告)日：2009-12-08

申请号：US11192181

申请日：2005-07-29

申请人： Kenkichi Hayashi ,  Seiji Tanaka ,  Masaya Tamaru ,  Makoto Ooishi ,  Kazuhiko Takemura

发明人： Kenkichi Hayashi ,  Seiji Tanaka ,  Masaya Tamaru ,  Makoto Ooishi ,  Kazuhiko Takemura

IPC分类号： G06K9/40

CPC分类号： G06T5/002 ,  G06T5/003 ,  G06T5/50 ,  G06T2207/10024 ,  G06T2207/20016 ,  G06T2207/20192

摘要： Noise reduction processing in accordance with frequency band is executed. To accomplish this, a image data dividing circuit divides image data into image data having frequencies in a low-frequency region, image data having frequencies in a low- to intermediate frequency region and image data having frequencies in a low- to high-frequency region. These items of image data thus divided on a frequency-band basis are input to respective ones of noise reduction circuits that have been set to respective ones of parameters suited to noise reduction of image data having frequencies in the low-, low- to intermediate and low- to high-frequency regions, respectively. The items of image data that have thus undergone noise reduction processing conforming to frequency band are input to an image data combining circuit. The latter combines the image data so as to obtain image data representing one frame of an image.

摘要翻译： 执行根据频带的降噪处理。 为了实现这一点，图像数据分割电路将图像数据划分为具有低频区域中的频率的图像数据，具有低频至中频区域中的频率的图像数据和具有低频至高频区域中的频率的图像数据 。 这些按频带划分的图像数据项目被输入到各自的噪声降低电路，这些噪声降低电路已被设置为适合于具有低，低至中频频率的图像数据的噪声降低的各个参数， 低频到高频区。 已经进行了符合频带的降噪处理的图像数据的项目被输入到图像数据组合电路。 后者组合图像数据以获得表示图像的一帧的图像数据。

公开(公告)号：US6011547A

公开(公告)日：2000-01-04

申请号：US956033

申请日：1997-10-22

申请人： Kazuo Shiota ,  Norihisa Haneda ,  Shigekazu Fukada ,  Kazuhiko Takemura

发明人： Kazuo Shiota ,  Norihisa Haneda ,  Shigekazu Fukada ,  Kazuhiko Takemura

IPC分类号： H04N5/765 ,  H04N1/21 ,  H04N1/23 ,  H04N5/225 ,  H04N5/781 ,  H04N5/91 ,  G06T5/00

CPC分类号： H04N1/32128 ,  H04N1/2112 ,  H04N1/32101 ,  H04N1/56 ,  H04N2101/00 ,  H04N2201/3214 ,  H04N2201/3215 ,  H04N2201/3226 ,  H04N2201/3242 ,  H04N2201/3252 ,  H04N2201/3277 ,  H04N2201/3278

摘要： When a picture image recorded by a digital camera is reproduced, a high quality picture image is immediately reproduced without repetitive test prints for enhancing a picture quality or repetitive minor adjustments based on a confirmation via a monitor. Recording is carried out by a digital camera having a function of adding recording information representing a recording condition (a recording information adding unit) to digital image data obtained by the recording. A set-up processing unit in an image reproducing apparatus carries out image processing on the image data obtained by the recording for enhancing a picture quality using the recording information added to the image data, and the image reproducing apparatus reproduces the image data in the form of a print or a display on a monitor.

摘要翻译： 当再现由数码相机记录的图像图像时，立即再现高质量的图像图像，而不需要重复的测试打印，以通过监视器基于确认来提高图像质量或重复的微调。 通过具有将表示记录条件（记录信息添加单元）的记录信息添加到通过记录获得的数字图像数据的功能的数字照相机进行记录。 图像再现装置中的设置处理单元使用添加到图像数据中的记录信息，对通过用于增强图像质量的记录而获得的图像数据执行图像处理，并且图像再现装置以该形式再现图像数据 的显示器上的打印或显示。

公开(公告)号：US5920358A

公开(公告)日：1999-07-06

申请号：US791143

申请日：1997-01-30

申请人： Kazuhiko Takemura

发明人： Kazuhiko Takemura

IPC分类号： H04N9/79 ,  G06T1/00 ,  H04N1/46 ,  H04N1/60

CPC分类号： H04N1/6086 ,  H04N1/6077

摘要： Physiological primary colors, which correspond to tristimulus values of each of picture elements of an image on a hard copy, are obtained. A parameter, which represents the degree of incomplete chromatic adaptation, is determined in accordance with a correlated color temperature of a white point of a CRT display device, on which the image is to be displayed. Temporary tristimulus values, which are to be reproduced on the CRT display device, are derived in accordance with the parameter. From the temporary tristimulus values, perception values relating to lightness, color vividness and hue, such as metric lightness, metric chroma, and a metric hue angle in the LAB-color space are calculated by taking the white point of the CRT display device as a viewing illuminance. The tristimulus values of the image are then transformed into the tristimulus values on the display device, and a soft copy image is formed on the display device in accordance with the transformed tristimulus values. The same color appearances as those of the hard copy image are thereby obtained on the soft copy image displayed on the display device.

摘要翻译： 获得与硬拷贝上的图像的每个图像元素的三刺激值相对应的生理原色。 根据显示图像的CRT显示装置的白点的相关色温来确定表示不完全色调度的参数。 将在CRT显示装置上再现的临时三色值根据参数导出。 从临时三刺激值中，通过将CRT显示装置的白点作为一个等级来计算与LAB色空间中的亮度，色彩鲜艳度和色调相关的感知值，例如度量亮度，度量色度和度量色调角度 观察照度。 然后将图像的三刺激值转换为显示设备上的三刺激值，并根据转换的三刺激值在显示设备上形成软拷贝图像。 由此在显示装置上显示的软拷贝图像上获得与硬拷贝图像相同的颜色外观。

公开(公告)号：US06826312B1

公开(公告)日：2004-11-30

申请号：US09359121

申请日：1999-07-23

申请人： Kazuhiko Takemura

发明人： Kazuhiko Takemura

IPC分类号： G06K920

CPC分类号： H04N1/6011

摘要： Image data can be corrected in the same manner as by retouching work using a photograph finishing system in a laboratory. Sub-image data generating means generates sub-image data representing density information or the like of an original image from main image data representing the original image. The sub-image data are displayed on a monitor as a sub-image, and an operator carries out correction using input means while viewing the sub-image. In this manner, corrected sub-image data are obtained by retouching means. Correction means corrects the main image data based on the corrected sub-image data, and processed image data are obtained. The processed image data are reproduced as a printed image by a printer.

摘要翻译： 图像数据可以通过使用实验室中的照片整理系统的修饰工作相同的方式进行校正。 子图像数据生成装置从表示原始图像的主图像数据生成表示原始图像的浓度信息等的子图像数据。 子图像数据作为子图像显示在监视器上，并且操作者在观看子图像的同时使用输入装置执行校正。 以这种方式，通过修饰装置获得校正的子图像数据。 校正装置基于校正的子图像数据校正主图像数据，并且获得处理的图像数据。 经处理的图像数据由打印机作为打印图像再现。