An image forming apparatus includes an image former configured to form a first image on a first recording medium; a feeder configured to feed the first recording medium to the image former; a reader configured to read the first image formed on the first recording medium; a process executor configured to execute a predetermined process based on a first read image that is obtained by the reader by reading the first image; and a corrector configured to correct the reader based on a second read image that is obtained by the reader by reading a second image formed on a second recording medium fed by the feeder, and a predetermined read reference image.

The image processing apparatus includes a white balance adjustment circuit configured to adjust a color temperature to RAW data of an image obtained by capturing, a generator circuit configured to generate data of planes for each component of the image from data of which color temperature was adjusted, and a RAW encoding circuit configured to conduct compression encoding of the data of the planes.

An image processing apparatus (104) includes an acquirer (104b) configured to acquire information related to a lateral chromatic aberration, and a corrector (104c) configured to correct an image to reduce the lateral chromatic aberration based on the information related to the lateral chromatic aberration, the information related to the lateral chromatic aberration includes a first component related to a design value, and a second component related to a manufacturing error, each of the first component and the second component is a rotationally symmetric component.

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.

Color of a color image may be adjusted by a color adjustment apparatus, image display apparatus, and color adjustment method to enable easier distinction between objects shown in the image. A parameter defines a range of saturation to be adjusted within saturation before color adjustment and a range of change of the saturation after color adjustment compared to the saturation before color adjustment. The color adjustment apparatus calculates the saturation from an image signal, calculates the saturation after color adjustment according to the saturation before color adjustment such that the saturation in the range determined by the parameter increases/decreases by an amount determined by the parameter, and generates an image signal from the saturation after color change. By determining the parameter such that the saturation difference between prescribed colors is greater after color adjustment, the difference in color between a plurality of objects shown in the image is increased.

According to one embodiment, an image processor includes a processor. The processor implements acquiring a first image and first information. The first information indicates a condition of a first projection surface. The first information includes a first color gamut of the first projection surface. The processor implements deriving a second color gamut according to the first color gamut derived by using the first information. The processor implements converting a chromaticity of the first image to obtain a second image. Each pixel of the second image has a color included in the second color gamut. The processor implements generating a first converted image by correcting the second image based on the first color gamut.

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.

A signal processing device includes a first adjuster, a second adjuster, and a digitizer. The first adjuster coarsely adjusts an output range of a signal input to the first adjuster to output a first signal. The second adjuster adjusts an output range of a signal more finely than the first adjuster adjusts to output a second signal. The digitizer digitizes the first signal or the second signal to output a digital signal. The digital signal has an output range of a signal that is finely adjusted with the second adjuster after being coarsely adjusted with the first adjuster.

A display control apparatus includes one or more processors, a conversion unit configured to convert a color of the image based on a predetermined condition, and a display control unit configured to perform control such that, in a case where a non-color-converted image is displayed in which the color of the non-color-converted image is not converted, a display item is displayed at a superimposed position at which the display item is superimposed on the image, and in a case where a color-converted image is displayed in which the color of the color-converted image is converted, the display item is displayed at a non-superimposed position at which the display item is not superimposed on the color-converted image.

A control apparatus causes, to execute image processing of single-color image data, a processing apparatus configured to accept an image processing command including a plurality of fields, each capable of storing a respective one of a plurality of color components in a dot sequential format, and execute image processing by using pixel values included in the command. The control apparatus extracts, from single-color image data, a plurality of partial images by a number corresponding to the number of color components. The control apparatus acquires single-color pixel values from the respective partial images, and stores the single-color pixel values in the respective fields of the image processing command. A generated image processing command is input to the processing apparatus, and the processing apparatus executes image processing using the pixel values included in the command.