An image processing apparatus includes an acquisition unit configured to acquire a reference image serving as a reference printing result and a target image serving as a printing result to be inspected, a correction unit configured to correct the target image based on a paper white area of each of the reference image and the target image so that a paper white color of the paper white area of the target image matches a paper white color of the paper white area of the reference image, wherein the paper white area is determined based on a positional displacement between the reference image and the target image, and an inspection unit configured to inspect the printing result by comparing the corrected target image with the reference image.

An information processing device includes a processing part, a controlling part, and a providing part. The processing part executes a process. The controlling part controls the processing part to execute the process when the process corresponding to an operation on an operating image is requested from a display device that temporarily stores and displays an externally provided operating image. The providing part provides a first operating image to be displayed by the display device to the display device, and provides, to the display device in advance, a second operating image displayed when the first operating image is operated, within a range not exceeding a quantity predetermined as an upper limit.

A lighting device (23) irradiates a web under conveyance with light. The lighting device includes a light source (43), and an irradiation port (61) configured to open linearly in a widthwise direction of the web at an end portion facing the web. The irradiation port (61) is formed between first and second parallel portions (62b, 63b) where a first plate member (62) and a second plate member (63) parallelly face each other. The web under conveyance is irradiated with linear light. It is possible to provide a lighting device capable of irradiating only an inspection region of a sheet or a web with light.

An image processing apparatus includes an acquisition unit configured to acquire image data including reflection characteristics information indicating reflection characteristics of a material with respect to incident light; a calculation unit configured to calculate, from reflection characteristics indicated by the reflection characteristics information corresponding to each pixel included in an area of a predetermined size in an image indicated by the image data, a statistical amount indicating the reflection characteristics of the area with the predetermined size; and a generation unit configured to generate arrangement data representing an arrangement of a structure including a printing material on a recording medium, based on the statistical amount.

A printing apparatus includes a storage that stores a table that associates a type of a print medium with an output profile, a memory device that stores a set of instructions, and at least one processor that executes the set of instructions to determine whether or not an output profile has been designated by a print job to be processed for a page included in the print job, perform color conversion for the page using the output profile designated by the print job without referring to the table and printing in a case where it is determined the output profile has been designated by the print job, and referring to the table, perform color conversion for the page using the output profile associated with a type of a print medium and printing in a case where it is determined the output profile has not been designated by the print job.

In a case where a sample color is outside a color reproduction range of an image forming apparatus, there arises an issue that an adjustment target color cannot be brought close to a user-desired color. An image forming apparatus includes a generation unit configured to cause a printing unit to print a plurality of colors close to an acquired sample color and generate a color conversion table based on a user-selected color among the plurality of printed colors in a case where it is determined that the acquired sample color is outside a color reproduction range of the image forming apparatus, whereas in a case where it is determined that the acquired sample color is not outside the color reproduction range, the generation unit generates a color conversion table without causing the printing unit to print the plurality of colors close to the sample color.

An image processing apparatus includes circuitry that acquires a colorimetric value for each of a plurality of patches on a first chart printed out by an image forming apparatus and read by a colorimeter. Each of the patches has a monochromatic color. The circuitry further acquires a maximum tone value previously set in accordance with a sheet, and converts each of the colorimetric value, the maximum tone value, and a color system value of a first target into a particular color value. The first target represents an ideal characteristic of the color system value corresponding to a tone value. The circuitry further determines, as a second target, a characteristic passing through a point determined by a color value corresponding to the maximum tone value. The characteristic is generated based on the color system value of the first target converted into the particular color value.

An image forming apparatus outputs a tone chart for calibration by a printer, reads the output tone chart by a scanner, determines whether data on a sheet is affected by a surface shape of the sheet based on the read tone chart, corrects data on a white area of the read chart based on a result of the determination, and executes calibration using the corrected data.

A color verification optimization program causes a computer to execute a process including steps of, when a plurality of color conversion patterns are extracted, determining whether one color conversion profile and another color conversion profile coincide with or approximate to each other by comparing color saturation values which are estimated with respect to color conversion profiles, determining whether one color correction table and another color correction table coincide with or approximate to each other by comparing color saturation values which are estimated with respect to color correction tables, and performing control to perform verification on one color conversion pattern in two or more color conversion patterns of which the color conversion profiles and the color correction tables both coincide with or approximate to each other and omit the verification with respect to a remaining color conversion pattern.

An image processing apparatus includes a decomposition unit configured to decompose a color image into at least two color component images, a first obtaining unit configured to obtain a skewness of a histogram corresponding to each of the color component images, and a determination unit configured to determine based on the obtained skewnesses associated with the color component images whether the color image is glossy.