Canon Kabushiki Kaisha

Hidetsugu Kagawa

Akitoshi Yamada

Tomokazu Ishikawa

Tohru Ikeda

Fumitaka Goto

Nobutaka Miyake

Junichi Nakagawa

Ryosuke Iguchi

Mitsuhiro Ono

Tetsuya Suwa

Senichi Saito

Shinjiro Hori

Fumihiro Goto

Kouta Murasawa

Maya Yazawa

Takashi Nakamura

Akihiko Nakatani

Yumi Yanai

Wakako Tanaka

Shuhei Ogawa

Hiromitsu Akiba

Satoshi Wada

Ayumi Sano

Takeshi Yazawa

Okinori Tsuchiya

Manabu Yamazoe

Takashi Fujita

Yugo Mochizuki

Maya Ishii

Shinichi Miyazaki

Kei Yoshizawa

Ayumi Hori

Hisashi Ishikawa

Hiroshi Tajika

Kentaro Yano

Yuji Konno

Makoto Torigoe

Tomokazu Yanai

Naomi Yamamoto

Tatsuo Kimura

Yoshinori Kawai

An image processing apparatus includes an input unit configured to input image data; a generation unit configured to generate image data having undergone color gamut conversion from the image data input by the input unit using a conversion unit configured to convert a color gamut of the image data input by the input unit into a color gamut of a device configured to output the image data; a correction unit configured to correct the conversion unit based on a result of the color gamut conversion; and a control unit configured to control execution of the correction by the correction unit for an object included in the image data input by the input unit.

Image processing apparatus, method, and computer program product correcting color gamut conversion based on a positional relationship between different objects

An information processing apparatus includes a first acquisition unit to acquire input image data, a second acquisition unit to acquire display luminance information including maximum and minimum luminance values in displaying on a display device and print luminance information including maximum and minimum luminance values to be reproduced on printed matter outputted by a printing apparatus, and a conversion unit, to cause the printing apparatus to perform the output based on the input image data for which display is performed on the display device, to convert a first luminance range of the input image data to a second luminance range that is less than the first and, then, to generate output image data having the second luminance range. The minimum luminance value of the display luminance information is greater than the minimum luminance value of the print luminance information.

Information processing apparatus, information processing method, and storage medium for storing program in which a minimum luminance value of display luminance information is greater than that of print luminance information

An image processing apparatus obtains image data that is defined as a first color gamut, transforms the image data into image data that is defined as a second color gamut, using color transformation information, and when, as a result of transformation, a first pair of color values included in the image data is transformed into a second pair of color values that have a color difference that is not perceived as different colors, generates second color transformation information such that the first pair of color values is transformed into a third pair of color values that have a color difference that is perceived as different colors as a result of transformation using the second color transformation information. A saturation difference of the third pair of color values is larger than a saturation difference of the second pair of color values.

Image processing apparatus, image processing method, and medium

Due to the influence of luminance contrast between objects, the luminance of each object may be perceived as being different from the actual luminance, and a difference may occur between the appearance of an output based on input image data having a wide luminance range when the output is observed and the appearance of an output based on output image data having a narrow luminance range when the output is observed. The contrast intensity between the objects is calculated, and a dynamic range compression process is performed based on the calculated contrast intensity, so that it is possible to reduce the difference in appearance due to the influence of luminance contrast.

Apparatus, method, and storage medium

An image processing apparatus comprising: a decision unit configured to decide a first color mapping method to a print color gamut for a first partial original based on a pixel value included in the first partial original and the print color gamut of a print unit and decide a second color mapping method to a print color gamut for a second partial original based on a pixel value included in the second partial original and the print color gamut of the print unit; and a color conversion unit configured to perform color conversion of the first partial original by the first color mapping method decided, and perform color conversion of the second partial original by the second color mapping method decided.

Image processing apparatus, image processing method, and storage medium storing program

Disclosed is an image processing apparatus including: a derivation unit configured to derive a target luminance characteristic based on a viewing condition of an image and a print luminance characteristic predicted based a reflection characteristic corresponding to data thereon; a unit configured to generate print image data on an image by converting input image data by using a tone conversion characteristic that is set based on these characteristics, in which the derivation unit derives, in a case where a reproduction range of an illumination intensity in the print luminance characteristic is different, the target luminance characteristic so that a liner area of an output luminance in a case where the reproduction range is relatively large becomes large.

Image processing apparatus, image processing method, storage medium, and image forming apparatus

An image processing apparatus comprises: an obtaining unit configured to obtain an image and distance information concerning a distance from an in-focus plane, which corresponds to each pixel included in the image; a setting unit configured to set an image processing condition according to the distance information based on an output characteristic of an output apparatus concerning a sharpness; and a processing unit configured to perform image processing for the image using the distance information obtained by the obtaining unit and the image processing condition set by the setting unit, wherein the processing unit changes, in accordance with the distance information, a band of a spatial frequency of the image to which the image processing is applied.

Image processing apparatus, image processing method, and non-transitory computer-readable storage medium

An image processing apparatus for displaying on a display device an image corresponding to a printed product observed in a predetermined observation environment. The apparatus includes one or more memories storing instructions, and one or more processors executing the instructions to obtain image data, to obtain a lighting luminance in the predetermined observation environment, to set a maximum luminance to be displayed in the display device according to the obtained lighting luminance, to convert the obtained image data according to the obtained lighting luminance, and to output the converted image data to the display device whose maximum luminance to be displayed has been set according to the obtained lighting luminance.

Image processing apparatus, image processing method, control apparatus, control method, and storage medium that display converted image data whose maximum luminance has been set according to an obtained lighting luminance

An image processing apparatus comprises: an obtaining unit that obtains a luminance of an input image having a color reproduction range wider than that of a printing apparatus; a conversion unit that performs, for the input image, conversion processing of obtaining a value included in the color reproduction range of the printing apparatus and obtaining the luminance of the image after the conversion; and a correction unit that corrects the luminance of the input image, wherein the correction unit performs correction of the luminance of the input image based on a conversion characteristic between the obtained luminance and the obtained luminance such that an intensity of the correction becomes higher for a color that is not included in the color reproduction range of the printing apparatus than for a color included in the color reproduction range of the printing apparatus.

Image processing apparatus, image processing method, and non-transitory computer-readable medium

An image processing apparatus sets, for at least one portion of a first image in which a brightness range is a first range, relationship information which associates an input brightness value with an output brightness value, changes, based on the relationship information, brightness values of pixels in the portion, and outputs a second image which has a second range of brightness. The relationship information is generated so as to associate, with each of the brightness values of the pixels in the portion, an output brightness value which does not exceed a value higher than the brightness value by a predetermined value, and to associate, with a brightness value which is not less than a feature amount among the brightness values of the pixels in the portion, a predetermined output brightness value falling within a predetermined range.

Image processing apparatus, image processing method, and non-transitory computer-readable storage medium that output a second image of which brightness values of pixels are output brightness values based on relationship information and an input brightness value of a first image

An image processing apparatus divides a first image into a plurality of areas based on obtained image data of the first image and sets relationship information between input brightness values with output brightness values for each of the plurality of areas, and converts, based on the relationship information, a brightness value of pixels included in the first image into a brightness value of pixels of a second image whose brightness range is narrower than that of the first image. In the conversion, the apparatus sets, for at least some pixels of the first image, a size of a window for specifying pixels within a predetermined area including the pixels based on environment information in which the second image is observed, and calculates a brightness value in the second image for each of the at least some pixels based on the window.

Image processing apparatus, control method, and non-transitory computer-readable storage medium

Conventionally, three-dimensional appearance of an output image in an output apparatus such as a printer or display differs from that of an input image in that output characteristics of the output apparatus that influences sharpness of an image is not considered. According to an embodiment of this present invention, an image processing apparatus sets an image processing condition for executing image processing, that is set based on output characteristics of an output apparatus and image characteristics related information obtained when image data is obtained, and performs image processing for the image data using information equivalent to a distance from a focal plane at the time of image-capturing an object and the set image processing condition.

Image processing apparatus, image processing method, and non-transitory computer readable storage medium, with image processing using distance information equivalent to distance from focal plane at time of image-capturing and image processing condition

An image processing apparatus, comprises: a detection unit configured to detect a predetermined region of an image from image data; and a correction unit configured to correct a value of luminance in the predetermined region detected by the detection unit. The correction unit corrects a high-frequency value out of a low-frequency value and the high-frequency value obtained from a luminance value of a pixel having a value of luminance higher than a predetermined threshold in the predetermined region so that a high-frequency contrast weakens.

An image processing apparatus includes an input unit for inputting an image, a division unit for dividing the inputted image into a plurality of divided regions, an obtaining unit for obtaining a feature amount of the image for each of the divided regions, a generation unit for generating a compression curve for each divided region, and a compression unit for generating an output image by performing compression of a dynamic range using the compression curve for each of the divided regions. The generation unit generates the compression curve for each of the divided regions so that a slope of the compression curve for each of the divided regions matches in a range from a luminance of a dark region of the image to a luminance of a predetermined brightness.

Image processing apparatus, image processing method, and storage medium that generate compression curves of respective divided regions so that respective slopes of the compression curves match in a particular luminance range

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Kawasaki, Japan

Hidetsugu Kagawa