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    • 6. 发明授权
    • Color image recording and reproducing system
    • 彩色图像记录和再现系统
    • US5864364A
    • 1999-01-26
    • US763230
    • 1996-12-10
    • Nagaaki OhyamaToshiaki WadaMasahiro YamaguchiTakashi Obi
    • Nagaaki OhyamaToshiaki WadaMasahiro YamaguchiTakashi Obi
    • H04N9/79G06T1/00G06T5/00H04N1/46H04N1/60H04N7/10H04N9/64H04N9/73H04N11/00H04N11/24H04N5/232
    • H04N1/6086H04N1/6088
    • A spectral image photographing section photographs the image of an object to be photographed as spectrum information in units of pixels so as to mutually record and reproduce a faithful image between two points. A photographing light spectrum detecting section detects the spectrum distribution of illumination light at a photographing point. A reproduction environment light spectrum detecting section detects the spectrum distribution of illumination light at a reproduction point. A spectral reflectance distribution calculating section eliminates the influence of the spectrum distribution of illumination light from the spectrum information photographed by the spectral image photographing section, and calculates the spectral reflectance distribution of the object. A spectrum converting section calculates, on the basis of the reproduction environment light spectrum detected by the reproduction environment light spectrum detecting section and the spectral reflection distribution calculated by the spectral reflectance distribution calculating section, a spectrum distribution obtained when the image of the object is photographed under illumination light substantially identical to that at the reproduction point. A vector imaging section converts the spectrum distribution of each pixel converted by the spectrum converting section into three-dimensional color.
    • 光谱图像拍摄部以像素为单位拍摄要拍摄的对象的图像作为频谱信息,以便在两点之间相互记录和再现忠实的图像。 拍摄光谱检测部检测拍摄点的照明光的光谱分布。 再生环境光谱检测部检测再现点的照明光的光谱分布。 光谱反射率分布计算部消除由光谱图像拍摄部拍摄的光谱信息的照明光的光谱分布的影响,并计算对象的光谱反射率分布。 光谱转换部根据由再现环境光谱检测部检测出的再现环境光谱和由光谱反射率分布计算部算出的光谱反射分布,计算拍摄对象的图像时得到的光谱分布 在照明光下基本上与再生点相同。 矢量成像部将由频谱转换部转换的各像素的频谱分布变换为三维色。
    • 9. 发明授权
    • Color reproducing device
    • 彩色再现装置
    • US06885476B2
    • 2005-04-26
    • US10217837
    • 2002-08-13
    • Yasuhiro KomiyaKensuke IshiiNagaaki OhyamaMasahiro YamaguchiTakashi Obi
    • Yasuhiro KomiyaKensuke IshiiNagaaki OhyamaMasahiro YamaguchiTakashi Obi
    • H04N9/79G01N21/25G06T1/00H04N1/56H04N1/60G06K15/00
    • H04N1/6086H04N1/603H04N1/6088
    • In a color reproduction device, an input profile that is referenced in converting an input image from an image input device into a device-independent color image is created based on image input device information, shooting- and observation-time lighting data, and subject data, allowing accurate conversion of the input image to the device-independent color image. In reproducing the image by an image output device, the spectral reflectance of the subject itself is calculated from image input device information and shooting-time lighting data, thereby reducing the effect of the shooting-time lighting. The colors of the subject under observation lighting are calculated from observation-time lighting data. A color reproduced image is estimated accurately on the basis of the subject data even if the input image has little information.
    • 在彩色再现装置中,基于图像输入装置信息,拍摄和观察时间照明数据以及被摄体数据,创建将从图像输入装置输入的图像转换为与装置无关的彩色图像中参考的输入曲线 ,允许将输入图像精确转换为与设备无关的彩色图像。 在通过图像输出装置再现图像时,根据图像输入装置信息和拍摄时间照明数据计算被摄体本身的光谱反射率,从而降低拍摄时间照明的效果。 观察照明下的被摄体的颜色由观察时间照明数据算出。 即使输入图像信息很少,也可以基于被摄体数据精确地估计彩色再现图像。