An image processing apparatus that generates image data to be output to an image forming apparatus printing an image, and includes: a generation unit configured to generate, based on an input image, first generation amount data indicating a generation amount of each of one or more kinds of ink dot for each pixel and second generation amount data indicating a generation amount of a blank dot for which the ink dot is not formed for each pixel; and a processing unit configured to determine a dot arrangement pattern indicating an arrangement of each of the one or more kinds of ink dot by performing quantization processing using the first generation amount data and the second generation amount data.

An image processing apparatus includes an obtaining unit to obtain image data and a dynamic range conversion unit to convert an input luminance signal included in the image data into an output luminance signal for an image printing apparatus by using a conversion parameter. A dynamic range of luminance of the converted image data is narrower than that of the unconverted image data before the dynamic range conversion. When the input luminance signal indicates an input black reference luminance value, the output luminance signal indicates an output black reference luminance value, and, when the input luminance signal indicates a predetermined reference input luminance value, the output luminance signal indicates a reference output luminance value, the reference output luminance value being a value calculated based on the predetermined reference input luminance value and the output black reference luminance value for observing a print product to be printed by the printing apparatus.

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.

An image forming system includes an image forming apparatus configured to form an image on a recording medium and an output device configured to output information for a user. The image forming system further includes circuitry configured to acquire, from a reading device read data of the image on the recording medium; calculate a correction value of an image density of the read image; cause the image forming apparatus to form, on a recording medium, a corrected image based on the correction value; and acquire, from the reading device, read data of the corrected image; and cause the output device to output report information representing a relation between a density variation value of the corrected image and a threshold of the density variation value.

An information processing apparatus generates a signal value for forming an image of an object as a recording layer on a recording medium. The apparatus inputs a characteristic of specular reflection light, a characteristic of internal diffuse reflection light, and a characteristic of surficial diffuse reflection light. Then, the apparatus derives, based on the characteristic of the internal diffuse reflection light, a first signal value for a first recording layer to be formed on the recording medium, and derives, based on the characteristic of the specular reflection light and the characteristic of the surficial diffuse reflection light, a second signal value for a second recording layer different from the first recording layer to be formed on the recording medium.

An image forming apparatus includes an image forming portion, an image reading portion, an analysis processing portion, a generation processing portion, and a printing processing portion. The image forming portion forms an image on a paper sheet. The image reading portion reads a first image from a printed side of a used paper sheet supplied from a sheet feed portion. The analysis processing portion analyzes content of the first image read by the image reading portion. The generation processing portion generates, based on the content of the first image analyzed by the analysis processing portion, a second image that degrades visibility of the first image when the second image is superimposed on the first image. The printing processing portion causes the image forming portion to execute a printing process such that the second image generated by the generation processing portion is superimposed on the first image on the printed side.

A learning device includes an acquiring unit and a learning unit. The acquiring unit acquires an image and correction information designated for printing the image. The learning unit performs machine learning on recommended correction information that indicates correction content recommended for the print target image in printing the print target image, based on the data set in which the image is associated with the correction information.

A die controller to control a fluidic die having a plurality of primitives each including a plurality of nozzles addressed by a same set of addresses. The die controller provides operational data including a series of actuation data groups to the fluidic die to actuate the nozzles to eject fluid to form an article, each actuation data group including a series of fire pulse groups, with each fire pulse group corresponding to a different address of the set of addresses and including a set of actuation data for each primitive and a set of start bits to initiate actuation of the nozzles based on the actuation data of the immediately preceding fire pulse group. The die controller to provide a blank fire pulse group immediately following a last fire pulse group of the series of fire pulse groups of each actuation data group when operating in an edge sharpness mode.

A width in a first direction of a line in image data corresponding to an image to be printed by a printing apparatus is corrected, based on information on print result of line-width detection images printed based on line-width detection image data in a raster format which is generated by performing rasterization processing on line-width detection image data in a vector format. In the line-width detection image data in the vector format, a distance between centers of the widths in the first direction of two lines adjacent in the first direction in each line-width detection image is an integral multiple of a rasterization resolution in the rasterization processing.

An image forming apparatus includes a transferor, a first detector to detect an image formed on the transferor, a second detector to detect an image formed on a recording medium, and circuitry. The circuitry is configured to generate first gradation correction data based on a detection result obtained by the first detector, generate second gradation correction data based on a detection result obtained by the second detector, and control gradation correction for the image formed on the recording medium using the first and second gradation correction data. Further, the circuitry is configured to prioritize one of the first and second gradation correction data based on at least one of a characteristic of the recording medium and a characteristic of the image in the gradation correction during consecutive printing in which images are consecutively formed on recording media.