Abstract: An image processing apparatus converts first color values in a first color space to second color values in a second color space for an objective color. If the objective color is not within a color reproduction space of an outputting device, the searching unit searches for a set of color values as base color values in the color reproduction space so that the set of color values minimizes a value of the color difference formula for the first color values. As the second color values, the searching unit determines a set of color values in a predetermine neighbor space of the base color values so that the determined set of color values minimizes a difference between property values on a color property of which the allowed color difference is smallest among the allowed color differences at the first color values.

Abstract: In the image processing apparatus, a display control unit displays property control units that specify correction strength independently for chroma, brightness and hue angle in selectable ranges in accordance with the user operation. Allowed correction ranges for chroma, brightness and hue angle based on a color difference formula are set to the selectable ranges. If correction strength specified by one of the property control units is changed according to the user operation, then an allowed correction range determining unit determines and changes the allowed correction ranges of residual properties using the color difference formula to which the changed correction strength of one property among chroma, brightness and hue angle has been applied, and the display control unit changes the selectable ranges of the property control units of the residual properties to the changed allowed correction ranges, and changes indication of the property control units of the residual properties.

Abstract: In the image processing apparatus, a display control unit displays property control units that specify correction strength independently for chroma, brightness and hue angle in selectable ranges in accordance with the user operation. Allowed correction ranges for chroma, brightness and hue angle based on a color difference formula are set to the selectable ranges. If correction strength specified by one of the property control units is changed according to the user operation, then an allowed correction range determining unit determines and changes the allowed correction ranges of residual properties using the color difference formula to which the changed correction strength of one property among chroma, brightness and hue angle has been applied, and the display control unit changes the selectable ranges of the property control units of the residual properties to the changed allowed correction ranges, and changes indication of the property control units of the residual properties.

Abstract: A touch screen displays a plurality of images corresponding to a plurality of colors represented by color information stored in a color information storage unit. A selection part indicating whether the image is in a selected state or an unselected state is associated with each image displayed on the touch screen. An intermediate color calculating unit calculates color information representing an intermediate color of two colors indicated by images respectively corresponding to two selection parts in the selected state. An intermediate color adding unit displays on the touch screen an image corresponding to the intermediate color, based on color information of the intermediate color calculated by the intermediate color calculating unit, and a selection part corresponding to the image. An output unit outputs the color information of the intermediate color corresponding to the selection part if the selection part corresponding to the intermediate color is selected.

Abstract: An image processing apparatus converts first color values in a first color space to second color values in a second color space for an objective color. If the objective color is not within a color reproduction space of an outputting device, the searching unit searches for a set of color values as base color values in the color reproduction space so that the set of color values minimizes a value of the color difference formula for the first color values. As the second color values, the searching unit determines a set of color values in a predetermine neighbor space of the base color values so that the determined set of color values minimizes a difference between property values on a color property of which the allowed color difference is smallest among the allowed color differences at the first color values.

Abstract: A pixel extracting unit extracts pixels belonging to a previously designated color range from the image data of a correction object. A target color selection receiving unit receives a selection of one target color by a user, from among a plurality of target colors stored in a target color storage unit. A color correction executing unit executes color correction on correction object image data, based on the color of the pixel extracted by the pixel extracting unit and the target color selected through the target color selection receiving unit. A target color extracting unit extracts the target color of a registration object from target color registration image data stored in a registration image storage unit. A target color registration unit registers the target color of the registration object extracted by the target color extracting unit in the target color storage unit to be associated with a previously designated color range.

Abstract: An image processing apparatus includes a pixel extracting unit, a correction quantity calculating unit, a selection image storage unit, a selection receiving unit, and a color correction executing unit. The pixel extracting unit extracts a pixel from predetermined image data. The correction quantity calculating unit calculates a color correction quantity based on a color difference between a color of the pixel extracted by the pixel extracting unit and a target color. The selection image storage unit stores data of a selection image representing an external appearance of each image data obtained by executing color correction on the pixel according to the color correction quantity. The selection receiving unit receives selection of a color correction type. The color correction executing unit executes color correction on the extracted pixel in image data of a correction object according to a color correction quantity corresponding to the color correction type.

Abstract: An image processing apparatus includes a pixel extracting unit, a correction quantity calculating unit, a selection image storage unit, a selection receiving unit, and a color correction executing unit. The pixel extracting unit extracts a pixel from predetermined image data. The correction quantity calculating unit calculates a color correction quantity based on a color difference between a color of the pixel extracted by the pixel extracting unit and a target color. The selection image storage unit stores data of a selection image representing an external appearance of each image data obtained by executing color correction on the pixel according to the color correction quantity. The selection receiving unit receives selection of a color correction type. The color correction executing unit executes color correction on the extracted pixel in image data of a correction object according to a color correction quantity corresponding to the color correction type.