An illumination condition, which is used to irradiate a print product with light having illuminance higher than normal illumination, is derived based on exposure condition information at the time of photographing.

An image processing device includes: a conversion relationship acquisition unit that acquires, for each of plural output destinations by which to output an image, a conversion relationship for performing color correction corresponding to each of the output destinations; a selection information acquisition unit that acquires, for each of the plural output destinations, selection information about whether or not to perform color correction using the conversion relationship; and an image data transmission unit that transmits, to a display device, image data expressing the image before or after performing color correction on a basis of the selection information acquired from the selection information acquisition unit.

A redundantly printed security-enhanced document, printing method, and system for better ensuring that the meaning of the information imparted by variable indicia printed by redundant printing indicia on a document protected by a removable Scratch-Off Coating (SOC). By printing the variable indicia with multiple colors, redundancy and integrity of the intended indicia is achieved relative to the perception of human eye photoreceptor cones. The redundantly printed document, methods, and systems enhance the overall appearance of the redundantly printed document, and reduce possible consequences resulting from misprinted variable indicia.

A color conversion apparatus includes an accepting unit and a converter. The accepting unit accepts plural colorimetric values obtained by measuring a target color image in plural directions. The converter converts the plural colorimetric values accepted by the accepting unit to color values including a value indicating a coloring-material amount of a luster coloring material and a value indicating a coloring-material amount of a coloring material other than the luster coloring material.

The present disclosure generally relates to printed structures and methods for generating the same. The printed structure includes a first surface including a first ink type arranged in a first image and a second surface at least partially aligned with at least a portion of the first surface, the second surface including a second type of ink arranged in a second image. The first and second surfaces are physically separated from one another, the first image is visible under a first set of light wavelengths and the second image is visible under a second set of light wavelengths.

Methods for mapping an image from one dynamic range to another dynamic range are presented. The mapping is based on a sigmoid-like function determined by three anchor points. The first anchor point is determined using the black point levels of a reference and a target display, the second anchor point is determined using the white point levels of the reference and target displays, and the third anchor point is determined using mid-tones information data for the input image and the mid-tones level of the target display. The mid-tones level of the target display is computed adaptively based on a desired range of constant brightness and a mapping function. The mapping function mapping may be piece-wise linear (in the log domain), piece-wise continuous, or a sigmoid. Examples for mapping high dynamic range images to standard dynamic range displays are presented.

Various implementations disclosed herein include methods, electronic devices, and systems for performing perceptual-based color correction based on chromaticity values. To that end, in some implementations, a method is performed at an electronic device with one or more processors, a non-transitory memory, and a see-through display. The method includes determining a chromaticity value associated with ambient light from a physical environment. The chromaticity value quantifies the ambient light. The method includes determining a set of color correction values based on a function of the chromaticity value and image data. The set of color correction values and the chromaticity value together satisfy one or more perceptual criteria. The method includes modifying the image data in order to generate display data based on a function of the set of color correction values. The method includes displaying the display data on the see-through display.

A display includes a display unit, an image sensor that takes an image of a predetermined area and outputs the taken image, and a hardware processor that detects the marker in the taken image, generates differential color information between color data of the marker in the taken image and color data of the marker in the print image data, displays a virtual object which reproduces the print image data in the display unit, sets an object adjustment value for adjusting a color tone of the virtual object displayed on the display unit based on the differential color information, and calculates a print adjustment value for adjusting a color tone reproduced by the image forming apparatus based on the object adjustment value.

The present invention accepts an input of a temporary condition, which is an illumination condition temporarily selected by a user from a plurality of illumination conditions, uses spectral colorimetric data for a specific patch printed as a specific color to calculate a first color value, which is a color value under each of the plurality of illumination conditions, calculates, by using the first color value, a second color value, which is a color value indicating an appearance of a printed matter printed to appear as the specific color under the temporary condition, which is an illumination condition other than the temporary condition, displays color information indicated by the second color value, accepts an input of an illumination condition permanently selected by the user from the plurality of illumination conditions, and creates a profile such that the specific patch is observed as the specific color under the illumination condition permanently selected.

The present invention accepts an input of a temporary condition, which is an illumination condition temporarily selected by a user from a plurality of illumination conditions, uses spectral colorimetric data for a specific patch printed as a specific color to calculate a first color value, which is a color value under each of the plurality of illumination conditions, calculates, by using the first color value, a second color value, which is a color value indicating an appearance of a printed matter printed to appear as the specific color under the temporary condition, which is an illumination condition other than the temporary condition, displays color information indicated by the second color value, accepts an input of an illumination condition permanently selected by the user from the plurality of illumination conditions, and creates a profile such that the specific patch is observed as the specific color under the illumination condition permanently selected.