A method for inkjet printing machine color control includes color transformation of print data from first color space to process color space in a first stage using a computer transforming print data from the first to an intermediate color space while keeping special colors, and a second stage transforming corrected print data including special colors from intermediate to process color space. The computer uses print data corrected after the first stage as second stage starting values. Print data transformed into the process color space are printed. First color space corresponds to CMYK, flexographic printing or RGB color space with special colors, intermediate color space corresponds to CMYK color space with special colors, process color space corresponds to CMYK color space with additional process colors. The computer corrects CMY, not K print data or special not transformed colors, when correcting print data in the intermediate color space after the first stage.

A method of printing a three-dimensional (3D) color object, layer-by-layer, comprises: obtaining a 3D CAD specification defining a 3D geometry and a surface color distribution for the color object to be printed, defining regions on a surface of the color object; defining colors for each region based on the CAD specification; determining, using the 3D geometry of the specification, conditions applying at respective regions that are liable to cause color variation, such that using the colors as defined at the respective regions may give rise to a coloration error; selecting color corrections defined for respective determined conditions; correcting the defined colors; and printing the 3D color object with the color corrections.

An image processing method for processing an image includes determining, selecting, and replacing. It is determined whether a portion, including a plurality of pixels and darker than a threshold in the image, is subject to a color replacement. One predetermined color from among a plurality of predetermined colors is selected, based on a color of at least a part of the plurality of pixels. Based on the determination, a color of the portion is replaced with the selected one predetermined color.

An image forming apparatus includes an image forming unit, a display unit, an operation unit, and a controller. The controller causes, before printing an image, the display unit to reduce and display, with respect to each of setting items for printing, images to each of which a processing indicated by one of the setting items is applied. When a user designates one of the images to which the processing indicated by one of the setting items is applied, the controller accepts an instruction to print the image, reflecting the processing indicated by the setting item corresponding to a designated image, and causes the display unit to reduce and display the images to each of which the processing indicated by a remaining setting item not designated by the user, and the processing indicated by the designated setting item corresponding to the designated image, are applied, with respect to remaining setting items.

A method of printing a three-dimensional (3D) color object, layer-by-layer, comprises: obtaining a 3D CAD specification defining a 3D geometry and a surface color distribution for the color object to be printed, defining regions on a surface of the color object; defining colors for each region based on the CAD specification; determining, using the 3D geometry of the specification, conditions applying at respective regions that are liable to cause color variation, such that using the colors as defined at the respective regions may give rise to a coloration error; selecting color corrections defined for respective determined conditions; correcting the defined colors; and printing the 3D color object with the color corrections.

An embodiment of the present invention is a program that causes a computer to function as: means for preparing print layout data in accordance with an instruction of a user, the print layout data indicating print layout of print information corresponding to a print object that includes a fixed print object and a variable print object; and means for preparing screen layout data, by the computer in accordance with preparation of the print layout data, the screen layout data indicating screen layout that includes an input field for accepting input of print information corresponding to the variable print object.

An image processing apparatus includes a first obtaining unit that obtains attribute information that specifies a process performed by an image forming apparatus in accordance with a print job including print data, a generation unit that generates a display image on the basis of the print data included in the print job, and a determination unit that determines a display color of a drawing area which corresponds to an area of a recording medium for printing the print data and in which a display image generated by the generation unit is to be disposed. If the attribute information specifies that a white color material be used, the determination unit determines the display color of the drawing area as a color other than white.

An image processing apparatus includes a display control unit that displays, on a display unit, a first area, in which a display image generated from print data included in a print job subjected to printing performed by an image forming apparatus is to be disposed, a second area, which corresponds to a recording medium on which an image to be printed corresponding to the display image is recorded and in which the display image is to be disposed, and a third area, which corresponds to a background of the recording medium and includes the second area, an identification unit that identifies a color of the recording medium specified by attribute information that specifies a process performed by the image forming apparatus in accordance with the print job, a setting unit that sets a background image of the recording medium, and a generation unit that generates the display image.

An image processing apparatus includes an obtaining unit that obtains attribute information that specifies a process performed by an image forming apparatus in accordance with a print job including print data, an identification unit that identifies a color of a recording medium specified by the attribute information, a generation unit that generates a display image on a basis of the color of the recording medium identified by the identification unit and the print data included in the print job, and a determination unit that determines, as the color of the recording medium identified by the identification unit, a display color of a drawing area which corresponds to an area of the recording medium for printing the print data and in which the display image generated by the generation unit is to be disposed.

An information processing apparatus is provided to facilitate a user's understanding of which area of an image has a higher degree of change when image processing is performed on the image. The information processing apparatus displays, on a display device, information indicating a relationship in magnitude between a first amount of change by the image processing in a first area included in a predetermined image and a second amount of change by the image processing in a second area included in the predetermined image.