Abstract: Provided are a color conversion table creation apparatus and method, a color conversion apparatus, and a program capable of further increasing color matching accuracy.

Abstract: Provided are a color conversion table creation apparatus and method, a color conversion apparatus, and a program capable of further increasing color matching accuracy.

Abstract: An image correction method comprising the steps of: specifying a region including the face of one person in an image of people displayed in a screen of image display means in response to an input from an operator; extracting a correction target region including at least the face of the person in the image, based on information on at least one of hue, saturation, lightness, and a position of an outline of the specified region; setting a degree of correction to be carried out on each position in the correction target region in such a manner that the degree of correction becomes lower from the inside of the correction target region to the outside thereof near a boundary of the correction target region; and correcting at least one of hue, saturation and lightness in the correction target region based on the degree of correction.

Abstract: An image correction method comprising the steps of: specifying a region including the face of one person in an image of people displayed in a screen of image display means in response to an input from an operator; extracting a correction target region including at least the face of the person in the image, based on information on at least one of hue, saturation, lightness, and a position of an outline of the specified region; setting a degree of correction to be carried out on each position in the correction target region in such a manner that the degree of correction becomes lower from the inside of the correction target region to the outside thereof near a boundary of the correction target region; and correcting at least one of hue, saturation and lightness in the correction target region based on the degree of correction.

Abstract: There are disclosed a color correcting relation extracting method capable of extracting a know-how of an image formation by a camera man, and a color correction method of reproducing the know-how. A color of a patch of a color chart is measured to obtain a colorimetry value, and the color chart is photographed by a television camera to obtain RGB data. A know-how for converting the colorimetry value into the RGB data is combined with a monitor characteristic conversion for converting the RGB data into the colorimetry value of a color of an image on a monitor, so that a know-how for a preferable image formation is obtained.

Abstract: There is produced a color correction definition for reproducing a suitable color correction common to a plurality of types of images. A color correction definition producing apparatus has a receiving section for receiving a plurality of LUTs (color correction definitions), a computing section for computing histograms used as an assembly of weight for sets of coordinate values constituting each of the LUTs, and a synthesizing section for synthesizing the plurality of LUTs received in the receiving section using the weight computed in the computing section.

Abstract: To create a color conversion definition defining an association between a color in an arbitrary gamut and a color in a color in a target gamut, there are provided a definition creating step of creating a first color conversion defining an association between a color in a reference gamut close to the arbitrary gamut and a color in the arbitrary, and a definition combination step of combining a second color conversion definition created beforehand defining an association between a color in the reference gamut and a color in the target gamut, with the first color conversion definition created in said definition creating step.

Abstract: There are disclosed a profile producing method and a profile producing apparatus for producing a profile taking into consideration a performance of a device and a distortion of colors. A creation of a profile and a verification of a performance of a device are performed in accordance with read data in which a color chart, wherein the same gray patches are disposed at a plurality of places on a chart sheet and at the common places of a plurality of chart sheets, is read.

Abstract: There is implemented a profile producing high in general-purpose properties. A first patch group consisting of patches of which colors are relatively near the saturated color is disposed in front in read order determined beforehand, and a second patch group consisting of patches of which colors are relatively near neutral tints is disposed in the rear.

Abstract: There are disclosed a color correcting relation extracting method capable of extracting a know-how of a color correction by an operator of a laboratory system, and a color correction method of reproducing the know-how. A color of an original image and a color of a transfer image formed in a laboratory system with a color correction of the original image by an operator are measured so that an LUT representative of the know-how of the color correction is extracted and incorporated into a computer system.

Abstract: Image data sets are classified into an event in which the image data sets were obtained. A user sends the image data sets to an image storage server. Tag information reading means in image classification means reads tag information added to the image data sets. The image classification means reads calendar information describing an event period from information database, and classifies the image data sets into the event based on photography date information described in the tag information and the calendar information, to generate classification information. The classification information is stored in a storage database together with the image data sets and thumbnail image data sets of the image data sets.

Abstract: A film chart original plate 300 is provided with a black patch 311 and a series of gray patches 312. The series of gray patches 312 have a series of optical densities including optical densities smaller 3.5 or more than the optical density of the black patch 311.

Abstract: To create a color conversion definition defining an association between a color in an arbitrary gamut and a color in a color in a target gamut, there are provided a definition creating step of creating a first color conversion defining an association between a color in a reference gamut close to the arbitrary gamut and a color in the arbitrary, and a definition combination step of combining a second color conversion definition created beforehand defining an association between a color in the reference gamut and a color in the target gamut, with the first color conversion definition created in said definition creating step.

Abstract: There are disclosed a profile producing method and a profile producing apparatus for producing a profile taking into consideration a performance of a device and a distortion of colors. A creation of a profile and a verification of a performance of a device are performed in accordance with read data in which a color chart, wherein the same gray patches are disposed at a plurality of places on a chart sheet and at the common places of a plurality of chart sheets, is read.

Abstract: There is implemented a profile producing high in general-purpose properties. A first patch group consisting of patches of which colors are relatively near the saturated color is disposed in front in read order determined beforehand, and a second patch group consisting of patches of which colors are relatively near neutral tints is disposed in the rear.

Abstract: After the relationship between data of a second colorimetric system with respect to data of a first colorimetric system in a color reproduction range is determined as a conversion relationship, the data of the second colorimetric system at the boundary of the color reproduction range are set to data outside the color reproduction range. Using data CMY of the second colorimetric system at the boundary of the color reproduction range, data outside the color reproduction range are estimated according to a multiple regression analysis, thus generating a new conversion relationship. Using the new conversion relationship, data of the first colorimetric system are converted into data of the second colorimetric system, which are thereafter processed by gamut mapping within the color reproduction range.

Abstract: A color transformation look-up table is provided, which is to be referred to when image signals for a non-self-luminous displaying medium are to be transformed into image signals for a self-luminous displaying medium such that appearances of perceived colors may become identical between images displayed on the two displaying media. The look-up table includes a function for transforming a dynamic range of the image signals for the non-self-luminous displaying medium into a dynamic range of the image signals for the self-luminous displaying medium such that a range of brightness of an image, which the non-self-luminous displaying medium can display, may become approximately identical with a range of brightness of an image, which the self-luminous displaying medium can display.

Abstract: Layout data are classified into character data, line image data, and gradation image data by an interpreter, and the line image data and the gradation image data are converted into data depending on printing conditions and output conditions of an output apparatus by a color conversion processor. The gradation image data are converted into data to which an image structure produced upon printing is imparted, by a halftone dot simulation processor. These data are converted into image data for scanning recording by a raster image processor, and outputted as a color proof image from the output apparatus.

Abstract: Layout data are classified into character data, line image data, and gradation image data by an interpreter, and the line image data and the gradation image data are converted into data depending on printing conditions and output conditions of an output apparatus by a color conversion processor. The gradation image data are converted into data to which an image structure produced upon printing is imparted, by a halftone dot simulation processor. These data are converted into image data for scanning recording by a raster image processor, and outputted as a color proof image from the output apparatus.

Abstract: A color proof is generated as a hard copy approximating a printed color document by a color printer or as a displayed image approximating a printed color document by a color display monitor. A color shift produced by a filtering process which cuts off a spatial frequency response inherent in an image output device such as a color printer, a color display monitor, or the like while retaining a spatial frequency response inherent in a printing screen of a printed color document during an image structure simulation process is corrected by a color shift correcting LUT, and thereafter a color shift caused when a color digital printer is used is corrected by a color shift correcting LUT. A generated color proof accurately reproduces colors and image structure of the printed color document.