Abstract: A discrimination filtering device includes a filter and a filter having different pass bands, a detection unit, a processing unit, and a result output unit. The detection unit detects an electromagnetic wave from an object that is the target of identification through the filters. The pass band of the filters is designed to be suitable for object discrimination. The processing unit substitutes the output from the detection unit into a discrimination function determined based on the pass band of the filters and the teaching spectrum obtained in advance to infer the group which the object belongs to based on the substituted result.

Abstract: To provide a functional spectral filter through which, it is possible for an observer wearing the functional spectral filter to change his or her color sensitivity (ease of color distinction), and which is for designing a color scheme easy to be distinguished for a color deficient observer by using the filter. A functional spectral filter including a multilayer is formed in accordance with a thin film design (an optimization method) determined by use of a color vision theory so as to make color sensitivity into a desired pattern. With respect to combinations that two colors among a plurality of specified colors are combined, color differences in the respective combinations are made close to a color difference given in advance. Alternatively, with respect to specified combinations, the color differences are made small or the color differences are made large.

Abstract: A discrimination filtering device includes a filter and a filter having different pass bands, a detection unit, a processing unit, and a result output unit. The detection unit detects an electromagnetic wave from an object that is the target of identification through the filters. The pass band of the filters is designed to be suitable for object discrimination. The processing unit substitutes the output from the detection unit into a discrimination function determined based on the pass band of the filters and the teaching spectrum obtained in advance to infer the group which the object belongs to based on the substituted result.

Abstract: To provide a functional spectral filter through which, it is possible for an observer wearing the functional spectral filter to change his or her color sensitivity (ease of color distinction), and which is for designing a color scheme easy to be distinguished for a color deficient observer by using the filter. A functional spectral filter including a multilayer is formed in accordance with a thin film design (an optimization method) determined by use of a color vision theory so as to make color sensitivity into a desired pattern. With respect to combinations that two colors among a plurality of specified colors are combined, color differences in the respective combinations are made close to a color difference given in advance. Alternatively, with respect to specified combinations, the color differences are made small or the color differences are made large.

Abstract: 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.

Abstract: A combination of colors that can be distinguished by a person of normal color vision but cannot be distinguished by a color-deficient person in an arbitrary color image is detected on the basis of a parameter for determining the combination of colors that can be distinguished by the person of normal color vision but cannot be distinguished by the color-deficient person. One of colors of the detected combination is changed to a specific color and the resultant image is displayed as a warning image. Alternately, one of colors of the detected combination is corrected and the resultant image is displayed as a corrected image.

Abstract: 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.

Abstract: 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.