An image forming apparatus includes a printing unit, an in-line colorimeter and an in-line scanner. A hardware processor is configured to control the printing unit, the in-line colorimeter and the in-line scanner, to perform the following operations. The hardware processor uses the printing unit to print a first color chart to be measured with the in-line scanner and an external colorimeter, and a second color chart to be measured with the in-line scanner and the in-line colorimeter. A hardware processor creates a scanner profile based on RGB values and colorimetric values of patches of the second size in the second area in the first color chart, and uses RGB values and colorimetric values of patches of the first size in the first area in each of the first and second color charts, to calculates correction amounts for use in estimation of colorimetric values by using the scanner profile.

Sharpness of image data in a low-frequency component, which is deceased by an image forming apparatus, is recovered and the recovered image data is converted into halftone image data. Halftone processing includes calculating edge intensity in a local region, dividing the local region into a first pixel group and a second pixel group based on a pixel value of each pixel, determining a distribution order of dots based on a pixel value of each pixel, a threshold value, and the edge intensity such that dots are likely to be distributed to the first pixel group and dots are unlikely to be distributed to the second pixel group, and determining an output value for each pixel in the local region by distributing dots to some pixels included in the local region as much as a number of dots to be output to the local region while referring to the distribution order.

An information processing device includes a processor configured to acquire image data including color information, acquire color information of a formed image, the formed image being an image formed on a recording medium on a basis of the image data, acquire light transmittance information expressing a degree of light transmittance of an image-carrying medium, the image-carrying medium being the recording medium on which the formed image is formed, and associate first color information, second color information, and the light transmittance information with each other, the first color information being the color information included in the image data and the second color information being the color information of the formed image.

Method, system, and graphical user interface for enabling optimal;colorant job programming. A graphical user interface displays a plurality of gamut mode selectable features. One or more of the gamut mode selectable features can be selected for image processing of an image. A graphical image can be displayed within the next of the user interface based on image processing of the image, and in response to selection of a gamut mode selectable feature. The resulting displayed graphical image with the user interface can demonstrate to a user the benefit of utilizing additional colorant on the image particular pixels in the graphical image, which can benefit from the additional colorant.

A method for a color correction using RGB data without a color space conversion for the color correction includes the steps of: extracting a start hue value of color coordinates from RGB input data; extracting an end hue value, which is finally modified by a color correction matrix user, from the start hue value according to each hue control value of a red color, a green color, a blue color, a yellow color, a cyan color and a magenta color (RGBYCM); converting input values R G and B, according to the end hue value, using a conversion formula for the corresponding input hue value among R, G and B conversion formulas; extracting a final saturation value from the end hue value according to an RGBYCM saturation control value; and calculating values of R, G and B according to modified start hue value, using an RGB color saturation value conversion formula.

An example color resource is generated. A source color from a first color space is converted to a corresponding greyscale color in a greyscale color space. The greyscale color includes a first luminosity amount. A black channel amount is adjusted to a depletion color from a second color space to form a target color in the second color space. The depletion color corresponds with a transformation of the source color into the second color space. The depletion color includes a second luminosity amount, and adjusting the black channel includes matching the second luminosity amount in the target color with the first luminosity amount.

Embodiments of the disclosure provide an image amplifying method, an image amplifying device, and a display apparatus, and relate to field of image processing technique, the method comprises: obtaining, by an image amplifying device, high-frequency and low-frequency components of a source image; performing, by the image amplifying device, pixel interpolation on the low-frequency components of the source image through a first interpolation algorithm, to obtain a low-frequency sub-image; performing, by the image amplifying device, pixel interpolation on the high-frequency components of the source image through a second interpolation algorithm, to obtain a high-frequency sub-image; and merging, by the image amplifying device, the low-frequency and high-frequency sub-images, to obtain a merged image; wherein the first interpolation algorithm and the second interpolation algorithm adopt different algorithms, so that it can ensure image quality of the amplified image while reducing the operation amount. Embodiments of the disclosure are applied to image amplification.

An image processing apparatus includes a corrector configured to provide a color correction based on a reference image selected from a plurality of color images having different polarization states acquired by changing a retardation provided to light from an object, for a synthesized image generated with polarization information of the object obtained from the plurality of color images.

In a print data generation apparatus, a print data generation apparatus generates print data. The print data includes post-replacement data obtained by the color replacement on pre-replacement data. The post-replacement data includes a plurality of post-replacement pixel values. Each post-replacement pixel value includes a plurality of post-replacement color components. In a case where a first residual amount of a first colorant is smaller than a second residual amount of a second colorant and a first consumption amount concerning the first colorant is larger than a second consumption amount concerning the second colorant, the color replacement on the pre-replacement data is performed so that a second post-replacement component corresponding to the second colorant is set to a first pre-replacement component value corresponding to the first colorant and the first post-replacement component corresponding to the first colorant is set to a pre-replacement component value other than the first pre-replacement component value.

An image-forming device includes a Central Processing Unit (CPU) and a storage device, wherein the storage device stores a color-conversion program, and the CPU functions as a centroid acquisition unit, a color-conversion-information generation unit, and an output-image generation unit. The centroid acquisition unit acquires a centroid of a cluster of approximate colors in an input image. The color-conversion-information generation unit generates color-conversion information for converting the input image to an output image. The output-image generation unit converts color in the input image, and generates the output image. The color-conversion information is information for moving a color in the input image according to movement of the centroid when moving the centroid to a representative color in a specific range.