Abstract: Disclosed is a method for acquiring a preferred memory color of an object and a standard color chart of the preferred memory color. The method comprises the following steps: collecting an original image of a target object with a representative memory color and a spectral reflectance distribution curve of a measured surface color of the target object; rendering the original image to acquire a group of experimental images; acquiring evaluation data of memory color preference of a subject based on the experimental images; obtaining a coordinate value of the preferred memory color; further, selecting a pigment combination of color patches according to the measured spectral reflectance distribution curve of a memory object, and acquiring a color formula of the color patches of the preferred memory color in an experiment from the combination, so as to realize the acquisition of a memory color chart.

Abstract: A color matching method and a color matching device are provided, the color matching method includes: S1, determining a target color; S2, judging whether color data of a sample is obtained, if yes, proceeding to step S3, and if not, proceeding to step S5; S3, measuring the color data of the sample and displaying a color on a substrate, and proceeding to step S4; S4, judging whether the color displayed on the substrate is consistent with the target color, and if not, proceeding to step S6, and if yes, proceeding to step S7; S5, selecting a color and emitting light consistent with a chromaticity value of the selected color onto the substrate and proceeding to step S6; S6, adjusting the color displayed on the substrate until an adjusted color displayed on the substrate is consistent with the target color, and proceeding to S7; and S7, storing data.

Abstract: A color gamut mapping method and apparatus, includes obtaining a to-be-processed image, obtaining lightness and chroma information of a target color gamut, and mapping a lightness value and a chroma value of a pixel in the to-be-processed image to obtain a processed image corresponding to the target color gamut, where a pixel in the processed image has a mapped lightness value and a mapped chroma value, and the mapped lightness value and the mapped chroma value are obtained by mapping the lightness value and the chroma value of the pixel in a color gamut of the to-be-processed image to the target color gamut using a point with a minimum lightness value in the target color gamut as a mapping end point.

Abstract: A color gamut mapping method and apparatus, includes obtaining a to-be-processed image, obtaining lightness and chroma information of a target color gamut, and mapping a lightness value and a chroma value of a pixel in the to-be-processed image to obtain a processed image corresponding to the target color gamut, where a pixel in the processed image has a mapped lightness value and a mapped chroma value, and the mapped lightness value and the mapped chroma value are obtained by mapping the lightness value and the chroma value of the pixel in a color gamut of the to-be-processed image to the target color gamut using a point with a minimum lightness value in the target color gamut as a mapping end point.

Abstract: According to the present invention, firstly multiple reference parameter values of each color sample in a color chart are set, or a photograph and a measurement are performed on a standard color chart or a user-defined color chart in a certain standard lighting environment, multiple reference parameter values, SPD (?)×R (?) and brightness of each color sample are obtained. Then the SPD (?)×R (?) and the brightness of each color sample are reproduced by using a spectral tunable lighting source. Then each reproduced color sample is photographed by using the camera under the same settings to obtain multiple reproduced parameter values of each color sample. The two groups of parameter values are compared and a color calibration model is established. Finally color calibration of each batch of camera modules is implemented without the helping of a color chart and standard lighting environment.

Abstract: According to the present invention, firstly multiple reference parameter values of each color sample in a color chart are set, or a photograph and a measurement are performed on a standard color chart or a user-defined color chart in a certain standard lighting environment, multiple reference parameter values, SPD (?)×R (?) and brightness of each color sample are obtained. Then the SPD (?)×R (?) and the brightness of each color sample are reproduced by using a spectral tunable lighting source. Then each reproduced color sample is photographed by using the camera under the same settings to obtain multiple reproduced parameter values of each color sample. The two groups of parameter values are compared and a color calibration model is established. Finally color calibration of each batch of camera modules is implemented without the helping of a color chart and standard lighting environment.

Abstract: Color selection and display methods and devices in which colors can be displayed according to color harmony and color emotion and feedback obtained on color emotion and color harmony evoked by selected color and/or color combinations.

Abstract: According to one example embodiment described herein is a method of notating a color that includes determining, using predetermined mathematical equations and in dependence on numerical color attributes that identify a color, a plurality of numerical color emotion values each representative of a different human emotional response to the color; and assigning an identifying notation to the color, the identifying notation comprising a color emotion notation that includes the color emotion values.

Abstract: Color selection and display methods and devices in which colors can be displayed according to color harmony and color emotion and feedback obtained on color emotion and color harmony evoked by selected color and/or color combinations.

Abstract: According to one example embodiment described herein is a method of notating a color that includes determining, using predetermined mathematical equations and in dependence on numerical color attributes that identify a color, a plurality of numerical color emotion values each representative of a different human emotional response to the color; and assigning an identifying notation to the color, the identifying notation comprising a color emotion notation that includes the color emotion values.

Abstract: A method, combination or apparatus for compensating for or predicting the shift in the human perception of color which occurs when the color is seen on a small surface area as compared with when it is seen extending over of large surface area. The compensation or prediction is performed by increasing (compensation) or decreasing (prediction) the lightness and chroma of the color in a specified way. The invention allows choosers of color to take account of the shifts when making their choice of colors and is useful in choosing colors for paints, plastics, textiles or illuminated surfaces.