A color image of a target is captured by a color sensor in an imaging reader. A color image processing pipeline processes the captured color image with a plurality of color image processing components to display the image of a target with high fidelity. One or more of the components are bypassed to decode the image of a symbol target to prevent degradation of reader performance.

An image reading apparatus according to an embodiment of the present invention includes: an image sensor to read a document; a movement unit configured to relatively move the document and the image sensor by using a motor as a drive source; an output unit configured to output data of a plurality of colors based on accumulated light-receiving signals by accumulating the light-receiving signals from the image sensor for each color in order for each line in a direction of the movement based on an encoder pulse output from an encoder in accordance with rotation of the motor; and a correction unit configured to perform shading correction for each piece of data of the plurality of colors output by the output unit by using a correction value to correct influence on data of the plurality of colors due to a dark current in the image sensor based on shading data.

An image processing apparatus includes circuitry. The circuitry receives an operation of selecting data indicating a target color in color stability control. The circuitry determines the selected data indicating the target color as correction target data indicating a target color used for the color stability control. The circuitry generates correction gamma data used for gradation correction of image data for printing according to the determined correction target data.

A print control apparatus for controlling a printing apparatus that calculates the amount of change between a designated color and a color measured, and is capable of executing a color accuracy verification, and a color correction includes: a job management unit that analyzes a print job and acquires a required color accuracy level, and calculates and manages a required time of the print job; an apparatus management unit that acquires a result of the color accuracy verification, predicts the degradation of the color accuracy, and calculates and manages a color correction effective time; and an output management unit that sets the output order of print jobs waiting to be output and the execution timing of the color correction, the required time of the print job, and the color correction effective time, and instructs the printing apparatus to execute the processing of the print job and the color correction.

An image forming apparatus includes a table generating unit. The table generating unit, in a Voronoi diagram, obtains empty circles as circles centered at Voronoi seeds of ends of Voronoi sides that intersect with a straight line passing through a largest saturation color and a smallest-saturation and specific-lightness color and passes through generatrices. After the table generating unit sets one of the generatrices shared by the two adjacent empty circles whose radius ratio is outside a specific range as a target point, and causes the radius ratio of the two empty circles to be within the specific range by changing at least one radius of the two empty circles, the table generating unit generates the conversion table that sets a color that corresponds to an intersection point corresponding to the target point among the intersection points of the two empty circles, as the definition colors.

An image processing method includes performing first halftone processing and second halftone processing. The second halftone processing is performed, for a second kind of color in advance among a plurality of colors constituting an original image, in units of blocks each consisting of a plurality of pixels that constitute the original image and the second kind of color is converted into an amount of second kind of ink corresponding to the second kind of color among the plurality of inks. The first halftone processing is performed, for the first kind of color, for each pixel that constitutes the original image or each pixel group having a smaller number of pixels than the block and the first kind of color is converted into an amount of first kind of ink corresponding to the first kind of color among the plurality of inks.

Disclosed is a signal processing device and an image display apparatus including the same. In the signal processing device and the image display apparatus according to the present disclosure, a High Dynamic Range (HDR) processor receives an image signal and adjust a luminance of the image signal, and a reduction unit configured to amplify the adjusted luminance of the image signal and increase a resolution of the grayscale of the image signal to generate an enhanced image signal, wherein the enhanced image signal provides an increased luminance and grayscale resolution of the image signal while maintaining high dynamic range within the displayed HDR image. Accordingly, expression of high grayscale of a received image may improve.

An image process device includes an image acquisition part that acquires color image data as a first image data, a color space conversion part that converts the first image data to second image data of a color space, an information acquisition part that extracts a color feature quantity from the color component value for all pixels of the second image data and acquires information of the color feature quantity and the brightness component value about two adjacent pixels different in the color feature quantity among all pixels of the second image data, a derivation part that derives a brightness component value conversion parameter that differs for the color feature quantity based on the information of the acquired color feature quantity and the brightness component value, a conversion part that converts the brightness component value based on the color feature quantity of each pixel of the second image data using the brightness component value conversion parameter for the derived color feature quantity, and an image generation part that generates monochrome image data from the first image data based on the converted brightness component value.

In an image correction apparatus, an image correction method, a program, and a recording medium, by an imaging apparatus, a video image in which a correction chart is captured is acquired, and the video image in which an object having a sheet shape is continuously acquired at least one of before or after the correction chart is captured. A plurality of correction chart images in which the correction chart is captured and a plurality of object images in which the object is captured are extracted from a plurality of frame images included in the video image. A correction parameter for correcting a representative object image of the plurality of object images is generated based on the plurality of correction chart images, and the representative object image is corrected using the correction parameter.

The present invention provides an electrophotographic member which has a high ability to impart charge to toners while the charge imparting ability is unlikely to be reduced even under an environment at high temperature and high humidity.

The electrophotographic member comprises a substrate, an elastic layer formed on the substrate, an intermediate layer covering the surface of the elastic layer, and a surface layer covering the surface of the intermediate layer, wherein the intermediate layer contains a binder resin and a polymer having a specific structure, the surface layer contains silicon oxide, and the surface layer has a thickness of 10 nm or more and 300 nm or less.