Abstract: An image processing apparatus includes a processor configured to extract a component related to luminance of each of a sample image and a processing target image that is to undergo image processing to match an impression of the processing target image to the sample image, extract feature values of the processing target image and the sample image by attaching to a pixel value of each pixel forming the processing target image and the sample image a weight responsive to the component related to the luminance, and make adjustment to match the feature value of the processing target image to the feature value of the sample image.

Abstract: An image processing apparatus includes a processor configured to adjust a reproduction parameter for correcting image visibility by changing a degree by which the reproduction parameter is to be changed from a reference value in accordance with a ratio of a second color gamut to a first color gamut. The first color gamut indicates a range in which an image is expressible by a first device. The second color gamut indicates a range in which an image is expressible by a second device.

Abstract: An image processing apparatus includes a processor configured to adjust a reproduction parameter for correcting image visibility by changing a degree by which the reproduction parameter is to be changed from a reference value in accordance with a ratio of a second color gamut to a first color gamut. The first color gamut indicates a range in which an image is expressible by a first device. The second color gamut indicates a range in which an image is expressible by a second device.

Abstract: An image processing apparatus includes a processor configured to extract a component related to luminance of each of a sample image and a processing target image that is to undergo image processing to match an impression of the processing target image to the sample image, extract feature values of the processing target image and the sample image by attaching to a pixel value of each pixel forming the processing target image and the sample image a weight responsive to the component related to the luminance, and make adjustment to match the feature value of the processing target image to the feature value of the sample image.

Abstract: An image processing apparatus includes an illumination light intensity calculating unit that determines, from a brightness value based on a pixel value of each pixel forming an original image, an illumination light intensity image having as a pixel value an illumination light component of the original image, using at least one smoothed image having the brightness value that is smoothed using at least a smoothing degree, and a light source color calculating unit that determines an illumination light source color as a light source color of illumination light in accordance with the original image and the illumination light intensity image.

Abstract: An image processing apparatus includes a reflectivity image generation unit that generates a reflectivity image in which a reflectivity component of an original image is used as a pixel value, from the original image, a determining unit that determines a degree of maintenance of at least one of a dark part and a bright part of the original image using the original image and a degree of enhancement of the reflectivity component of the original image and an enhancement image generation unit that generates an enhancement image in which the reflectivity component of the original image is enhanced using the reflectivity image, the degree of enhancement, and the degree of maintenance.

Abstract: An image processing apparatus includes an illumination light intensity calculating unit that determines, from a brightness value based on a pixel value of each pixel forming an original image, an illumination light intensity image having as a pixel value an illumination light component of the original image, using at least one smoothed image having the brightness value that is smoothed using at least a smoothing degree, and a light source color calculating unit that determines an illumination light source color as a light source color of illumination light in accordance with the original image and the illumination light intensity image.

Abstract: An image processing apparatus includes a smoothed-image generating unit that generates smoothed images obtained by smoothing an original image with degrees of smoothing, respectively, an illumination-image generating unit that generates an illumination image having pixel values of an illumination component of the original image by using the smoothed images that undergo weighting in which at least one of the smoothed images is assigned a different weight, a reflectance-image generating unit that generates a reflectance image on a basis of the original image and the illumination image, the reflectance image having pixel values of a reflectance component of the original image, and a reproduced-image generating unit that generates a reproduced image to enhance visibility of the original image, at least on a basis of the reflectance image and degree-of-enhancement information indicating a degree of enhancement of the reflectance component of the original image.

Abstract: An image processing apparatus includes a reflectivity image generation unit that generates a reflectivity image in which a reflectivity component of an original image is used as a pixel value, from the original image, a determining unit that determines a degree of maintenance of at least one of a dark part and a bright part of the original image using the original image and a degree of enhancement of the reflectivity component of the original image and an enhancement image generation unit that generates an enhancement image in which the reflectivity component of the original image is enhanced using the reflectivity image, the degree of enhancement, and the degree of maintenance.

Abstract: An image processing apparatus includes a smoothed-image generating unit that generates smoothed images obtained by smoothing an original image with degrees of smoothing, respectively, an illumination-image generating unit that generates an illumination image having pixel values of an illumination component of the original image by using the smoothed images that undergo weighting in which at least one of the smoothed images is assigned a different weight, a reflectance-image generating unit that generates a reflectance image on a basis of the original image and the illumination image, the reflectance image having pixel values of a reflectance component of the original image, and a reproduced-image generating unit that generates a reproduced image to enhance visibility of the original image, at least on a basis of the reflectance image and degree-of-enhancement information indicating a degree of enhancement of the reflectance component of the original image.

Abstract: Provided is an image processing apparatus including a color conversion unit that performs color conversion to convert an original image to a luminance image and to a chromaticity image, an illumination image generation unit that generates an illumination image having an illumination component of the luminance image as a pixel value from the luminance image, a reflectance image generation unit that generates a reflectance image having a stabilized reflectance component of the luminance image as a pixel value, a luminance reproduction image generation unit that enhances the reflectance component of the luminance image to generate a luminance reproduction image reproduced with being improved visibility of the luminance image, and an inverse color conversion unit that performs conversion inverse to the color conversion performed by the color conversion unit on the luminance reproduction image and the chromaticity image.

Abstract: Provided is an image processing apparatus including a characteristic information acquisition unit that acquires characteristic information indicating a characteristic relating to at least any one of distribution of a specific brightness region and a size of a dark and flat region in a luminance image, an enhancement degree information generation unit that generates enhancement degree information indicating a degree of enhancement of a specific component that affects image quality of the luminance image, based on the characteristic information, and a luminance reproduction image generation unit that generates a luminance reproduction image obtained by reproducing the specific component of the luminance image so as to be enhanced to a degree of enhancement indicated by the enhancement degree information.

Abstract: Provided is an image processing apparatus including a color conversion unit that performs color conversion to convert an original image to a luminance image and to a chromaticity image, an illumination image generation unit that generates an illumination image having an illumination component of the luminance image as a pixel value from the luminance image, a reflectance image generation unit that generates a reflectance image having a stabilized reflectance component of the luminance image as a pixel value, a luminance reproduction image generation unit that enhances the reflectance component of the luminance image to generate a luminance reproduction image reproduced with being improved visibility of the luminance image, and an inverse color conversion unit that performs conversion inverse to the color conversion performed by the color conversion unit on the luminance reproduction image and the chromaticity image.

Abstract: Provided is an image processing apparatus including a characteristic information acquisition unit that acquires characteristic information indicating a characteristic relating to at least any one of distribution of a specific brightness region and a size of a dark and flat region in a luminance image, an enhancement degree information generation unit that generates enhancement degree information indicating a degree of enhancement of a specific component that affects image quality of the luminance image, based on the characteristic information, and a luminance reproduction image generation unit that generates a luminance reproduction image obtained by reproducing the specific component of the luminance image so as to be enhanced to a degree of enhancement indicated by the enhancement degree information.

Abstract: An image processing device includes an image information acquiring unit that acquires image information of an image that is subjected to image processing, a path information acquiring unit that acquires position information of a path of an operation inputted by a user on the image, a calculation unit that calculates a magnitude of the path from the position information of the path, and an image processing unit that changes a degree to which to perform the image processing in accordance with the magnitude of the path, and performs the image processing with respect to the image.

Abstract: An image forming apparatus includes a rasterizing unit that rasterizes character information representing a character in a vector form into a first raster image in which pixels are arranged at a first predetermined density, a generator unit that generates a second raster image in accordance with the first raster image rasterized, and a mask image in which plural pixels are arranged at a second predetermined density, the plural pixels including a first pixel, and a second pixel, a exposure unit that irradiates an image carrier with the beam in response to the second raster image generated, a supply unit that supplies a developer to the image carrier which the exposure unit has irradiated with the beam, and develops on a surface of the image carrier an image responsive to the second raster image, and a transfer unit that transfers the developed image to a medium.

Abstract: An image forming apparatus includes a rasterizing unit that rasterizes character information representing a character in a vector form into a first raster image in which pixels are arranged at a first predetermined density, a generator unit that generates a second raster image in accordance with the first raster image rasterized, and a mask image in which plural pixels are arranged at a second predetermined density, the plural pixels including a first pixel, and a second pixel, a exposure unit that irradiates an image carrier with the beam in response to the second raster image generated, a supply unit that supplies a developer to the image carrier which the exposure unit has irradiated with the beam, and develops on a surface of the image carrier an image responsive to the second raster image, and a transfer unit that transfers the developed image to a medium.