A method includes obtaining a dynamic range representation of an image including multiple color channels. The dynamic range representation includes dynamic range information of pixels of the image in the color channels. The method further includes decomposing the dynamic range representation into a smooth portion, a color portion, and a detail portion. The smooth portion includes low frequency information of the pixels in the color channels. The color portion includes color intensity information of the pixels in the color channels. The detail portion includes high frequency information of the pixels in the color channels. The method also includes adjusting the smooth portion, the color portion, and the detail portion, respectively, to obtain an adjusted smooth portion, an adjusted color portion, and an adjusted detail portion, and combining the adjusted smooth portion, the adjusted color portion, and the adjusted detail portion to generate an output image.

An image processing apparatus comprises: a first obtainment unit configured to obtain HDR data which represents a high-dynamic range (HDR) image; a second obtainment unit configured to obtain print information to perform printing based on the HDR data obtained by the first obtainment unit; a third obtainment unit configured to obtain display information of a display apparatus which is to perform display based on the HDR data; and a conversion unit configured to convert, based on the display information obtained by the third obtainment unit, a dynamic range of luminance of the HDR data obtained by the first obtainment unit into a dynamic range by which printing is to be performed based on the print information obtained by the second obtainment unit.

To make it unnecessary to repeat the same work in a case where a destination color is set for each of a plurality of adjustment-target colors within a printing-target image. A plurality of adjustment-target colors is set at a time for a printing-target image, a patch in a color having a desired tint is selected from among each similar color patch group for each adjustment-target color, and a destination color is determined, which is a conversion destination for each adjustment-target color.

A method for color correcting imagery is disclosed. A plurality of images of a scene having different levels of detail is received. A first color correction is determined based on a first reference image and a first target image. The first reference image has a first level of detail and the first target image has a second level of detail greater than the first level of detail. The first color correction is applied to the first target image to generate a first color-corrected image having the second level of detail. A second color correction is determined based on the first color-corrected image and a second target image. The second target image has a third level of detail greater than the second level of detail. The second color correction is applied to the second target image to generate a second color-corrected image.

An example image forming apparatus includes a print engine to form an image by using toners of different colors, a memory to store toner quantity information of the different colors of toners, and a processor to perform a print job by reducing a use of a toner with a small toner residual quantity ratio when a difference in a residual quantity ratio of the toner for each color is greater than or equal to a determined value on the basis of the stored toner quantity information.

An image processing apparatus includes a reading unit configured to read an image of a document and generate image data, a first binarization unit configured to generate binary image data by performing halftone processing on the image data generated by the reading unit, a smoothing unit configured to perform smoothing processing on a character region of the binary image data, a second binarization unit configured to perform binarization processing on the character region having been subjected to the smoothing processing by the smoothing unit, and a character recognition unit configured to perform character recognition processing on the character region having been subjected to the binarization processing by the second binarization unit.

A image processing method includes a shifting step for determining whether to shift an identical color pixel region, in which two to N pixels of an identical color are arranged consecutively in a first direction, in the first direction or a direction opposite to the first direction within the image data, provided that N is an integer of 2 or greater, and shifting the identical color pixel region in the first direction or the direction opposite to the first direction when the shifting is determined to be performed, and an averaging step, in which in the shifting step, the shifting is determined to be performed when the identical color pixel region exists across two of the unit regions, and the identical color pixel region spanning across the two of the unit regions is shifted so as to be included in any one of the unit regions.

An information processing apparatus is configured to perform: acquiring target image data representing a target image made up of a plurality of partial images; determining whether a specific condition is met for each of the plurality of partial images; selecting a direction-determining method of a printing direction for each of the plurality of partial images in accordance with a determination result; determining whether the selected direction-determining method matches a correct method; and adjusting condition data for controlling a printing device so as to increase selectability of the correct method in response to determining that the selected direction-determining method differs from the correct method. The specific condition indicates that an image evaluation value be greater than or equal to a threshold. The image evaluation value represents an expected color difference between a first image printed by a first-directional partial print and a second image printed by a second-directional partial print.

There is provided an image forming apparatus for performing printing in a plurality of colors. The image forming apparatus includes processing circuitry. The processing circuitry is configured to receive first print data in which an object to be printed in a spot color is designated in a first area in a document to be printed and second print data of the document to be printed from an information processing apparatus; convert the second print data received by the communication unit into image data of a predetermined color; extract an image of the first area from the image data obtained by conversion of the drawing unit; convert the image of the first area extracted by the spot color image control unit into the spot color; and generate image data of the spot color in which the image of the first area converted by the conversion unit is placed.

There is provided a PC that performs print control on a printing apparatus which stores a plurality of pieces of color conversion information for color-converting first color information included in print data into second color information different from the first color information, the PC including a PC control unit that generates the print data including first designation information for designating in the print data a conversion target of the color conversion and second designation information for designating color conversion information used for the color conversion among the plurality of pieces of color conversion information stored in the printing apparatus, and transmits the generated print data to the printing apparatus.