In an image processing apparatus, when a correction request is received, a correction image including a correction pattern and identification information is printed on a printing medium. Thereafter, when a scanning request is received, the image is scanned and identification information is obtained. When the identification information corresponds to one stored in the storage, the driving information is corrected based on the scanned image. When a particular standby condition is satisfied, an information setting process is performed to set non-completion information, while, when a particular standby release condition is satisfied, the controller displays a screen corresponding to the satisfied standby release condition instead of the scan notification screen at a particular timing after the standby release condition is satisfied. If it is determined in a necessity/unnecessity receiving process that the correction image printing process is unnecessary, the controller performs the notification displaying process without performing the correction image printing process.

An image forming apparatus forms an image on a sheet and conveys the sheet through a conveying path. The image forming apparatus comprises a color detection sensor which detects a detection image formed on the sheet for generating an image forming condition and a white reference plate used to calibrate the color detection sensor. The white reference plate is arranged opposite to the color detection sensor interposing the conveying path therebetween at a position where the white reference plate is not concealed by the sheet when viewing from the color detection sensor when the sheet is conveyed to the conveying path. The detection image is formed on a white reference plate side of the sheet. The color detection sensor reads the white reference plate and is calibrated according to a read result.

There is provided an image processing apparatus where in an additional image storage unit 3, a color additional image is stored into a color image storage unit 4, and a black/white additional image is stored into a black/white image storage unit 5. A color judging unit 2 judges as to whether an input image corresponds to a color image, or a black/white image every page thereof. Based upon the judgment result of the color judging unit 2, an image synthesizing unit 6 adds the color additional image stored in the color image storage unit 4 to the input image when the input image is the color image, and adds the black/white additional image stored in the black/white image storage unit 5 in the input image when the input image is the black/white image. Then, the image synthesizing unit 6 outputs the resulting image synthesized with the additional image. When the input image is the black/white image, the black/white additional image is added to this input image charge amount for the black/white image can be determined.

Provided are an image processing apparatus, an image processing method, a program, and an image recording apparatus capable of suppressing occurrence of banding and color unevenness without productivity decrease. Different types of nozzle jetting rates are reflected in image data of each of a first color and a second color that are two different plural colors to perform conversion of a gradation value of each pixel, and halftone processing is performed with respect to the converted image data. A first nozzle jetting rate to be reflected in a gradation value of the first color is set so that a nozzle jetting rate of an end part nozzle at each of both end parts of a nozzle row is suppressed to be smaller than a nozzle jetting rate of a central nozzle. A second nozzle jetting rate to be reflected in a gradation value of the second color has a smaller difference between the nozzle jetting rate of the end part nozzle and the nozzle jetting rate of the central nozzle compared with the first nozzle jetting rate.

A correction coefficient calculation unit including a reference image output unit that generates a reference image, a profile receiving unit that receives image information and printing information, the image information indicating a color characteristic related to an image to be displayed on a display unit, the printing information indicating a color characteristic related to a printing device, and a reference image division unit that creates printing characteristic data that associates the reference image with the reference image that has undergone color conversion based on the printing information and the image information.

A correction coefficient calculation unit including a reference image output unit that generates a reference image, a profile receiving unit that receives image information and printing information, the image information indicating a color characteristic related to an image to be displayed on a display unit, the printing information indicating a color characteristic related to a printing device, and a reference image division unit that creates printing characteristic data that associates the reference image with the reference image that has undergone color conversion based on the printing information and the image information.

An information processing apparatus includes a display control unit, a receiving unit, a selecting unit, and a height-information setting unit. The display control unit displays image data on a display unit. The receiving unit receives specification of an arbitrary point on the displayed image data and specification of a color range in a three-dimensional color space that is based on the arbitrary point. The selecting unit selects a region having color included in the specified color range on the image data. The height-information setting unit sets height information to the selected region.

An information processing apparatus includes a display control unit, a receiving unit, a selecting unit, and a height-information setting unit. The display control unit displays image data on a display unit. The receiving unit receives specification of an arbitrary point on the displayed image data and specification of a color range in a three-dimensional color space that is based on the arbitrary point. The selecting unit selects a region having color included in the specified color range on the image data. The height-information setting unit sets height information to the selected region.

A reproduction color profile correction system includes, a differential colorimetric value calculator which calculates a differential colorimetric value that is a difference between a predicted colorimetric value and a measured colorimetric value, the predicted colorimetric value being a colorimetric value of a predicted reproduction color corresponding to a process ink combination of an ink combination, and a measured colorimetric value being a colorimetric value obtained by measuring a reproduction color in a color chart corresponding to the process ink combination, and a colorimetric value corrector which corrects, by using the differential colorimetric value, a predicted colorimetric value of a reproduction color reproduced by the ink combination.

A reproduction color profile correction system includes, a differential colorimetric value calculator which calculates a differential colorimetric value that is a difference between a predicted colorimetric value and a measured colorimetric value, the predicted colorimetric value being a colorimetric value of a predicted reproduction color corresponding to a process ink combination of an ink combination, and a measured colorimetric value being a colorimetric value obtained by measuring a reproduction color in a color chart corresponding to the process ink combination, and a colorimetric value corrector which corrects, by using the differential colorimetric value, a predicted colorimetric value of a reproduction color reproduced by the ink combination.