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    • 5. 发明授权
    • Apparatus and method for obtaining object-color component data
    • 用于获得对象颜色分量数据的装置和方法
    • US07002624B1
    • 2006-02-21
    • US09649588
    • 2000-08-29
    • Fumiko UchinoShiro UsuiShigeki NakauchiKeisuke Takebe
    • Fumiko UchinoShiro UsuiShigeki NakauchiKeisuke Takebe
    • H04N9/73H04N5/222
    • G06T5/50H04N1/387H04N5/2354H04N9/735
    • First image data is obtained by performing an image capturing operation with a flash and, subsequently, second image data is obtained by performing an image capturing operation without a flash. By using data of a differential image between the first and second image data and a relative spectral distribution of flash light, the spectrum reflectivity in a position on a subject corresponding to each pixel is obtained and object-color component data is acquired as data from which an influence of an illumination environment has been removed. On the other hand, illuminant component data indicative of spectral distributions of a plurality of illumination light are prepared. By combining arbitrary illuminant component data to the obtained object-color component data, an image with a different illumination environment can be reproduced.
    • 通过执行闪光的图像拍摄操作获得第一图像数据,随后通过执行没有闪光的图像捕获操作来获得第二图像数据。 通过使用第一和第二图像数据之间的差分图像的数据和闪光的相对光谱分布,获得与每个像素对应的被摄体上的位置的光谱反射率,并获取对象颜色分量数据作为数据, 照明环境的影响已经消除。 另一方面,准备表示多个照明光的光谱分布的光源成分数据。 通过将任意的光源分量数据与获得的对象颜色分量数据组合,可以再现具有不同照明环境的图像。
    • 7. 发明授权
    • Method and apparatus for color gamut mapping
    • 用于色域映射的方法和装置
    • US06198843B1
    • 2001-03-06
    • US08923659
    • 1997-09-04
    • Shigeki NakauchiShiro UsuiMasahiro Imamura
    • Shigeki NakauchiShiro UsuiMasahiro Imamura
    • G06K900
    • G06T11/001H04N1/6058
    • Colorimetric values such as L*a*b* are input from an input section to a color gamut mapping portion. A filtering process is performed on an image of the difference between the image sent by the input section and an image obtained as a result of bi-directional conversion at a converter section, and the input to the converter section is controlled so as to satisfy a requirement of minimizing an evaluation function which is defined by the sum of square norm of the filtered image as a whole and a value obtained by performing a thresholding process on norm of the difference in each pixel between images before and after the conversion at the converter section output by a gamut extracting section, obtained for the image as a whole. Device values satisfying predetermined conditions which are output of a first neural network of a first converter section to an image output section.
    • 诸如L * a * b *的比色值从输入部分输入到色域映射部分。 对由输入部分发送的图像与在转换器部分作为双向转换的结果获得的图像之间的差异的图像执行滤波处理,并且将转换器部分的输入控制为满足 将由滤波图像的整体的平方范数的和定义的评价函数最小化的要求和通过对转换器部分的转换之前和之后的图像之间的每个像素的差的范数执行阈值处理而获得的值 由整个图像获得的色域提取部分输出。 满足预定条件的装置值,其是第一转换器部分的第一神经网络输出到图像输出部分。
    • 8. 发明授权
    • Color transformation method and apparatus for transforming physical to
psychological attribute using a neural network
    • 使用神经网络将身体转换为心理属性的颜色变换方法和装置
    • US5185850A
    • 1993-02-09
    • US621058
    • 1990-11-30
    • Shiro UsuiShigeki NakauchiMasae Nakano
    • Shiro UsuiShigeki NakauchiMasae Nakano
    • G01J3/46G06N3/04G06T1/00H04N1/46H04N1/60
    • G06N3/04
    • To practice a method of transforming color sensation informations such that multidimensional physical informations and color sensation informations sensed by living bodies in response to the physical informations are non-linearly transformed therebetween, a multilayer feedforward type neural network is used for the purpose of accomplishing the foregoing transformation. The physical informations are provided in the form of data derived from multidimensional spectral distribution of light and the color sensation informations are provided in the form of sensitive colors each sensed by the living bodies as a psychological quantity relative to a certain color. An apparatus for carrying out the method includes an input section into which a physical quantity is inputted as an electrical signal, an information transforming section in which the inputted signal is transformed into a color sensation information representing psychological quantity of color and an output section from which the transformed color information is outputted. The information transforming section includes a multilayer feedforward type neural network.
    • 为了实现一种转换颜色感觉信息的方法,使得响应于物理信息的活体感测的多维物理信息和颜色感觉信息在其间非线性变换,为了实现上述目的,使用多层前馈型神经网络 转型。 物理信息以从光的多维光谱分布得到的数据的形式提供,并且彩色感觉信息以每一个活体感测的敏感颜色的形式提供为相对于某种颜色的心理量。 一种用于执行该方法的装置包括输入部件,物理量被输入到其中作为电信号;信息变换部分,其中输入的信号被转换成表示心理颜色的颜色的颜色感觉信息;以及输出部分, 输出变换后的颜色信息。 信息变换部包括多层前馈型神经网络。